WPF ContextMenu's MenuItems design changes as I get deeper - wpf

I have a ContextMenu that I want to override its style.
This is how it looks like:
All the SubMenus should look the same as the first one (with the White Highlighted Background)
Here's the XAML:
<ContextMenu>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
</MenuItem>
</MenuItem>
</MenuItem>
</MenuItem>
<MenuItem Header="Lol"/>
</ContextMenu>
Here's the Style of my ContextMenu:
<SolidColorBrush x:Key="ContextMenuMenuItemBackground" Color="Transparent"/>
<SolidColorBrush x:Key="ContextMenuSubMenuBorderBrush" Color="#CCCEDB"/>
<SolidColorBrush x:Key="ContextMenuSubMenuBackground" Color="#F6F6F6"/>
<Color x:Key="ContextMenuSubMenuDropShadowColor">#808080</Color>
<SolidColorBrush x:Key="ContextMenuTransitionBackground" Color="#E7E8EC"/>
<SolidColorBrush x:Key="ContextMenuMenuItemHighlightedBackground" Color="#EFEFF2"/>
<SolidColorBrush x:Key="ContextMenuSubmenuItemBackground" Color="Transparent"/>
<SolidColorBrush x:Key="ContextMenuSubmenuItemBackgroundHighlighted" Color="#FFFFFF"/>
<SolidColorBrush x:Key="ContextMenuArrowPanelBackgroundHighlighted" Color="#007ACC"/>
<SolidColorBrush x:Key="ContextMenuMenuDisabledForeground" Color="#A2A4A5"/>
<Style TargetType="{x:Type ContextMenu}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ContextMenu}">
<Grid Margin="0,0,5,5">
<Border x:Name="SubMenuBorder" BorderBrush="#CCCEDB" BorderThickness="1" Background="#F6F6F6" SnapsToDevicePixels="True" Padding="2">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Cycle" />
<Border.Effect>
<DropShadowEffect Color="#808080" Opacity="0.60" ShadowDepth="3"/>
</Border.Effect>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemContainerStyle">
<Setter.Value>
<Style TargetType="{x:Type MenuItem}">
<Setter Property="Foreground" Value="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type Menu}}}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<!--Border 1-->
<Border x:Name="Border" Background="{StaticResource ContextMenuMenuItemBackground}" BorderThickness="1" SnapsToDevicePixels="True">
<Grid x:Name="Grid">
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="Col0" MinWidth="17" Width="Auto" SharedSizeGroup="MenuItemIconColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuTextColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuItemIGTColumnGroup"/>
<ColumnDefinition x:Name="Col3" Width="14"/>
</Grid.ColumnDefinitions>
<ContentPresenter Grid.Column="0" x:Name="Icon" VerticalAlignment="Center" ContentSource="Icon"/>
<ContentPresenter Grid.Column="1" Margin="{TemplateBinding Padding}" x:Name="HeaderHost" RecognizesAccessKey="True" ContentSource="Header" VerticalAlignment="Center"/>
<ContentPresenter Grid.Column="2" Margin="8,1,8,1" x:Name="IGTHost" ContentSource="InputGestureText" VerticalAlignment="Center"/>
<Grid Grid.Column="3" Margin="4,0,6,0" x:Name="ArrowPanel" VerticalAlignment="Center">
<Path x:Name="ArrowPanelPath" HorizontalAlignment="Right" VerticalAlignment="Center" Fill="{TemplateBinding Foreground}" Data="M0,0 L0,8 L4,4 z"/>
</Grid>
<Popup IsOpen="{Binding Path=IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" HorizontalOffset="-1" x:Name="SubMenuPopup" Focusable="False" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" AllowsTransparency="True">
<Grid Margin="0,0,5,5">
<!--Border 2-->
<Border x:Name="SubMenuBorder" BorderBrush="{StaticResource ContextMenuSubMenuBorderBrush}" BorderThickness="1" Background="{StaticResource ContextMenuSubMenuBackground}" SnapsToDevicePixels="True">
<Grid x:Name="SubMenu" Grid.IsSharedSizeScope="True" Margin="2">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Cycle"/>
</Grid>
<Border.Effect>
<DropShadowEffect Color="{StaticResource ContextMenuSubMenuDropShadowColor}" Opacity="0.60" ShadowDepth="3"/>
</Border.Effect>
</Border>
<!--Border 3-->
<Border Margin="1,0,0,0" x:Name="TransitionBorder" BorderBrush="{StaticResource ContextMenuTransitionBackground}" BorderThickness="1" Background="{StaticResource ContextMenuTransitionBackground}" SnapsToDevicePixels="True" Width="0" Height="2" HorizontalAlignment="Left" VerticalAlignment="Top" />
</Grid>
</Popup>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Role" Value="TopLevelHeader">
<Setter Property="Padding" Value="6,0,6,2"/>
<Setter TargetName="SubMenuPopup" Property="Placement" Value="Bottom"/>
<Setter TargetName="Col0" Property="MinWidth" Value="0"/>
<Setter TargetName="Col3" Property="Width" Value="Auto"/>
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="IGTHost" Property="Visibility" Value="Collapsed" />
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="SubMenuBorder" Property="BorderThickness" Value="1,1,1,1"/>
<Setter TargetName="SubMenu" Property="Margin" Value="2,3,2,2"/>
<Setter TargetName="TransitionBorder" Property="Width" Value="{Binding ActualWidth, ElementName=Grid}"/>
</Trigger>
<Trigger Property="Role" Value="TopLevelItem">
<Setter Property="Padding" Value="6,0,6,2"/>
<Setter TargetName="Col0" Property="MinWidth" Value="0"/>
<Setter TargetName="Col3" Property="Width" Value="Auto"/>
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="IGTHost" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuHeader">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="10,3,0,3"/>
<Setter TargetName="Border" Property="MinHeight" Value="22"/>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackground}"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuItem">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="10,3,0,3"/>
<Setter TargetName="Border" Property="MinHeight" Value="22"/>
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackground}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="TopLevelHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuMenuItemHighlightedBackground}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="TopLevelItem"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuMenuItemHighlightedBackground}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="SubmenuHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackgroundHighlighted}"/>
<Setter TargetName="ArrowPanelPath" Property="Fill" Value="{StaticResource ContextMenuArrowPanelBackgroundHighlighted}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="SubmenuItem"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackgroundHighlighted}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSubmenuOpen" Value="True"/>
<Condition Property="Role" Value="TopLevelHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackground}"/>
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource ContextMenuSubMenuBorderBrush}"/>
</MultiTrigger>
<Trigger Property="Icon" Value="{x:Null}">
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{StaticResource ContextMenuMenuDisabledForeground}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
</Style>
Whats wrong here?
Why is this happening?


I got it to work but just using your MenuItem Style directly. I got rid of everything else except
<Style TargetType="{x:Type MenuItem}">
<Setter Property="Foreground" Value="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type Menu}}}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<!--Border 1-->
<Border x:Name="Border" Background="{StaticResource ContextMenuMenuItemBackground}" BorderThickness="1" SnapsToDevicePixels="True">
<Grid x:Name="Grid">
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="Col0" MinWidth="17" Width="Auto" SharedSizeGroup="MenuItemIconColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuTextColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuItemIGTColumnGroup"/>
<ColumnDefinition x:Name="Col3" Width="14"/>
</Grid.ColumnDefinitions>
<ContentPresenter Grid.Column="0" x:Name="Icon" VerticalAlignment="Center" ContentSource="Icon"/>
<ContentPresenter Grid.Column="1" Margin="{TemplateBinding Padding}" x:Name="HeaderHost" RecognizesAccessKey="True" ContentSource="Header" VerticalAlignment="Center"/>
<ContentPresenter Grid.Column="2" Margin="8,1,8,1" x:Name="IGTHost" ContentSource="InputGestureText" VerticalAlignment="Center"/>
<Grid Grid.Column="3" Margin="4,0,6,0" x:Name="ArrowPanel" VerticalAlignment="Center">
<Path x:Name="ArrowPanelPath" HorizontalAlignment="Right" VerticalAlignment="Center" Fill="{TemplateBinding Foreground}" Data="M0,0 L0,8 L4,4 z"/>
</Grid>
<Popup IsOpen="{Binding Path=IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" HorizontalOffset="-1" x:Name="SubMenuPopup" Focusable="False" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" AllowsTransparency="True">
<Grid Margin="0,0,5,5">
<!--Border 2-->
<Border x:Name="SubMenuBorder" BorderBrush="{StaticResource ContextMenuSubMenuBorderBrush}" BorderThickness="1" Background="{StaticResource ContextMenuSubMenuBackground}" SnapsToDevicePixels="True">
<Grid x:Name="SubMenu" Grid.IsSharedSizeScope="True" Margin="2">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Cycle"/>
</Grid>
<Border.Effect>
<DropShadowEffect Color="{StaticResource ContextMenuSubMenuDropShadowColor}" Opacity="0.60" ShadowDepth="3"/>
</Border.Effect>
</Border>
<!--Border 3-->
<Border Margin="1,0,0,0" x:Name="TransitionBorder" BorderBrush="{StaticResource ContextMenuTransitionBackground}" BorderThickness="1" Background="{StaticResource ContextMenuTransitionBackground}" SnapsToDevicePixels="True" Width="0" Height="2" HorizontalAlignment="Left" VerticalAlignment="Top" />
</Grid>
</Popup>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Role" Value="TopLevelHeader">
<Setter Property="Padding" Value="6,0,6,2"/>
<Setter TargetName="SubMenuPopup" Property="Placement" Value="Bottom"/>
<Setter TargetName="Col0" Property="MinWidth" Value="0"/>
<Setter TargetName="Col3" Property="Width" Value="Auto"/>
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="IGTHost" Property="Visibility" Value="Collapsed" />
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="SubMenuBorder" Property="BorderThickness" Value="1,1,1,1"/>
<Setter TargetName="SubMenu" Property="Margin" Value="2,3,2,2"/>
<Setter TargetName="TransitionBorder" Property="Width" Value="{Binding ActualWidth, ElementName=Grid}"/>
</Trigger>
<Trigger Property="Role" Value="TopLevelItem">
<Setter Property="Padding" Value="6,0,6,2"/>
<Setter TargetName="Col0" Property="MinWidth" Value="0"/>
<Setter TargetName="Col3" Property="Width" Value="Auto"/>
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="IGTHost" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuHeader">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="10,3,0,3"/>
<Setter TargetName="Border" Property="MinHeight" Value="22"/>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackground}"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuItem">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="10,3,0,3"/>
<Setter TargetName="Border" Property="MinHeight" Value="22"/>
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackground}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="TopLevelHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuMenuItemHighlightedBackground}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="TopLevelItem"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuMenuItemHighlightedBackground}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="SubmenuHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackgroundHighlighted}"/>
<Setter TargetName="ArrowPanelPath" Property="Fill" Value="{StaticResource ContextMenuArrowPanelBackgroundHighlighted}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="Role" Value="SubmenuItem"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackgroundHighlighted}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSubmenuOpen" Value="True"/>
<Condition Property="Role" Value="TopLevelHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource ContextMenuSubmenuItemBackground}"/>
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource ContextMenuSubMenuBorderBrush}"/>
</MultiTrigger>
<Trigger Property="Icon" Value="{x:Null}">
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{StaticResource ContextMenuMenuDisabledForeground}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
(I left the Brushes...)
To apply it only to the context menu in question...
<ContextMenu>
<ContextMenu.Resources>
<Style TargetType="{x:Type MenuItem}">
<Setter Property="Foreground" Value="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type Menu}}}"/>
......
</Style>
</ContextMenu.Resources>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
<MenuItem Header="blabla">
<MenuItem Header="Lol"/>
</MenuItem>
</MenuItem>
</MenuItem>
</MenuItem>
<MenuItem Header="Lol"/>
</ContextMenu>

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You need to extract the control template and styles of the ScrollBar and adapt them. You can extract them using Visual Studio or Blend. Put them into your application resource dictionary or local control resources, to be able to access them from your ScrollBar. For your custom style adapting the SolidColorBrushes in the extracted assets below should be enough to achieve the desired result.
<Style x:Key="FocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" StrokeDashArray="1 2" SnapsToDevicePixels="true" StrokeThickness="1" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
</ControlTemplate>
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</Style>
<SolidColorBrush x:Key="ScrollBar.Static.Background" Color="#F0F0F0"/>
<SolidColorBrush x:Key="ScrollBar.Static.Border" Color="#F0F0F0"/>
<SolidColorBrush x:Key="ScrollBar.Static.Glyph" Color="#606060"/>
<SolidColorBrush x:Key="ScrollBar.Static.Thumb" Color="#CDCDCD"/>
<SolidColorBrush x:Key="ScrollBar.MouseOver.Background" Color="#DADADA"/>
<SolidColorBrush x:Key="ScrollBar.MouseOver.Border" Color="#DADADA"/>
<SolidColorBrush x:Key="ScrollBar.MouseOver.Glyph" Color="#000000"/>
<SolidColorBrush x:Key="ScrollBar.MouseOver.Thumb" Color="#A6A6A6"/>
<SolidColorBrush x:Key="ScrollBar.Pressed.Background" Color="#606060"/>
<SolidColorBrush x:Key="ScrollBar.Pressed.Border" Color="#606060"/>
<SolidColorBrush x:Key="ScrollBar.Pressed.Thumb" Color="#606060"/>
<SolidColorBrush x:Key="ScrollBar.Pressed.Glyph" Color="#FFFFFF"/>
<SolidColorBrush x:Key="ScrollBar.Disabled.Background" Color="#F0F0F0"/>
<SolidColorBrush x:Key="ScrollBar.Disabled.Border" Color="#F0F0F0"/>
<SolidColorBrush x:Key="ScrollBar.Disabled.Glyph" Color="#BFBFBF"/>
<Style x:Key="RepeatButtonTransparent" TargetType="{x:Type RepeatButton}">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Focusable" Value="false"/>
<Setter Property="IsTabStop" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Rectangle Fill="{TemplateBinding Background}" Height="{TemplateBinding Height}" Width="{TemplateBinding Width}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ScrollBarButton" TargetType="{x:Type RepeatButton}">
<Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Focusable" Value="false"/>
<Setter Property="IsTabStop" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Border x:Name="border" Background="{StaticResource ScrollBar.Static.Background}" BorderThickness="1" BorderBrush="{StaticResource ScrollBar.Static.Border}" SnapsToDevicePixels="true">
<ContentPresenter x:Name="contentPresenter" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
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<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="border" Value="{StaticResource ScrollBar.MouseOver.Background}"/>
<Setter Property="BorderBrush" TargetName="border" Value="{StaticResource ScrollBar.MouseOver.Border}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" TargetName="border" Value="{StaticResource ScrollBar.Pressed.Background}"/>
<Setter Property="BorderBrush" TargetName="border" Value="{StaticResource ScrollBar.Pressed.Border}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Opacity" TargetName="contentPresenter" Value="0.56"/>
<Setter Property="Background" TargetName="border" Value="{StaticResource ScrollBar.Disabled.Background}"/>
<Setter Property="BorderBrush" TargetName="border" Value="{StaticResource ScrollBar.Disabled.Border}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ScrollBarThumbVertical" TargetType="{x:Type Thumb}">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="IsTabStop" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Rectangle x:Name="rectangle" Fill="{StaticResource ScrollBar.Static.Thumb}" Height="{TemplateBinding Height}" SnapsToDevicePixels="True" Width="{TemplateBinding Width}"/>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.MouseOver.Thumb}"/>
</Trigger>
<Trigger Property="IsDragging" Value="true">
<Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.Pressed.Thumb}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ScrollBarThumbHorizontal" TargetType="{x:Type Thumb}">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="IsTabStop" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Rectangle x:Name="rectangle" Fill="{StaticResource ScrollBar.Static.Thumb}" Height="{TemplateBinding Height}" SnapsToDevicePixels="True" Width="{TemplateBinding Width}"/>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.MouseOver.Thumb}"/>
</Trigger>
<Trigger Property="IsDragging" Value="true">
<Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.Pressed.Thumb}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ScrollBarStyle" TargetType="{x:Type ScrollBar}">
<Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
<Setter Property="Stylus.IsFlicksEnabled" Value="false"/>
<Setter Property="Background" Value="{StaticResource ScrollBar.Static.Background}"/>
<Setter Property="BorderBrush" Value="{StaticResource ScrollBar.Static.Border}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="1,0"/>
<Setter Property="Width" Value="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
<Setter Property="MinWidth" Value="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ScrollBar}">
<Grid x:Name="Bg" SnapsToDevicePixels="true">
<Grid.RowDefinitions>
<RowDefinition MaxHeight="{DynamicResource {x:Static SystemParameters.VerticalScrollBarButtonHeightKey}}"/>
<RowDefinition Height="0.00001*"/>
<RowDefinition MaxHeight="{DynamicResource {x:Static SystemParameters.VerticalScrollBarButtonHeightKey}}"/>
</Grid.RowDefinitions>
<Border Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Grid.Row="1"/>
<RepeatButton x:Name="PART_LineUpButton" Command="{x:Static ScrollBar.LineUpCommand}" IsEnabled="{TemplateBinding IsMouseOver}" Style="{StaticResource ScrollBarButton}">
<Path x:Name="ArrowTop" Data="M 0,4 C0,4 0,6 0,6 0,6 3.5,2.5 3.5,2.5 3.5,2.5 7,6 7,6 7,6 7,4 7,4 7,4 3.5,0.5 3.5,0.5 3.5,0.5 0,4 0,4 z" Fill="{StaticResource ScrollBar.Static.Glyph}" Margin="3,4,3,3" Stretch="Uniform"/>
</RepeatButton>
<Track x:Name="PART_Track" IsEnabled="{TemplateBinding IsMouseOver}" IsDirectionReversed="true" Grid.Row="1">
<Track.DecreaseRepeatButton>
<RepeatButton Command="{x:Static ScrollBar.PageUpCommand}" Style="{StaticResource RepeatButtonTransparent}"/>
</Track.DecreaseRepeatButton>
<Track.IncreaseRepeatButton>
<RepeatButton Command="{x:Static ScrollBar.PageDownCommand}" Style="{StaticResource RepeatButtonTransparent}"/>
</Track.IncreaseRepeatButton>
<Track.Thumb>
<Thumb Style="{StaticResource ScrollBarThumbVertical}"/>
</Track.Thumb>
</Track>
<RepeatButton x:Name="PART_LineDownButton" Command="{x:Static ScrollBar.LineDownCommand}" IsEnabled="{TemplateBinding IsMouseOver}" Grid.Row="2" Style="{StaticResource ScrollBarButton}">
<Path x:Name="ArrowBottom" Data="M 0,2.5 C0,2.5 0,0.5 0,0.5 0,0.5 3.5,4 3.5,4 3.5,4 7,0.5 7,0.5 7,0.5 7,2.5 7,2.5 7,2.5 3.5,6 3.5,6 3.5,6 0,2.5 0,2.5 z" Fill="{StaticResource ScrollBar.Static.Glyph}" Margin="3,4,3,3" Stretch="Uniform"/>
</RepeatButton>
</Grid>
<ControlTemplate.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineDownButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineDownButton}" Value="true"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowBottom" Value="{StaticResource ScrollBar.Pressed.Glyph}"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineUpButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineUpButton}" Value="true"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowTop" Value="{StaticResource ScrollBar.Pressed.Glyph}"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineDownButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineDownButton}" Value="false"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowBottom" Value="{StaticResource ScrollBar.MouseOver.Glyph}"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineUpButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineUpButton}" Value="false"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowTop" Value="{StaticResource ScrollBar.MouseOver.Glyph}"/>
</MultiDataTrigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Fill" TargetName="ArrowTop" Value="{StaticResource ScrollBar.Disabled.Glyph}"/>
<Setter Property="Fill" TargetName="ArrowBottom" Value="{StaticResource ScrollBar.Disabled.Glyph}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="Orientation" Value="Horizontal">
<Setter Property="Width" Value="Auto"/>
<Setter Property="MinWidth" Value="0"/>
<Setter Property="Height" Value="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarHeightKey}}"/>
<Setter Property="MinHeight" Value="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarHeightKey}}"/>
<Setter Property="BorderThickness" Value="0,1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ScrollBar}">
<Grid x:Name="Bg" SnapsToDevicePixels="true">
<Grid.ColumnDefinitions>
<ColumnDefinition MaxWidth="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarButtonWidthKey}}"/>
<ColumnDefinition Width="0.00001*"/>
<ColumnDefinition MaxWidth="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarButtonWidthKey}}"/>
</Grid.ColumnDefinitions>
<Border Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Grid.Column="1"/>
<RepeatButton x:Name="PART_LineLeftButton" Command="{x:Static ScrollBar.LineLeftCommand}" IsEnabled="{TemplateBinding IsMouseOver}" Style="{StaticResource ScrollBarButton}">
<Path x:Name="ArrowLeft" Data="M 3.18,7 C3.18,7 5,7 5,7 5,7 1.81,3.5 1.81,3.5 1.81,3.5 5,0 5,0 5,0 3.18,0 3.18,0 3.18,0 0,3.5 0,3.5 0,3.5 3.18,7 3.18,7 z" Fill="{StaticResource ScrollBar.Static.Glyph}" Margin="3" Stretch="Uniform"/>
</RepeatButton>
<Track x:Name="PART_Track" Grid.Column="1" IsEnabled="{TemplateBinding IsMouseOver}">
<Track.DecreaseRepeatButton>
<RepeatButton Command="{x:Static ScrollBar.PageLeftCommand}" Style="{StaticResource RepeatButtonTransparent}"/>
</Track.DecreaseRepeatButton>
<Track.IncreaseRepeatButton>
<RepeatButton Command="{x:Static ScrollBar.PageRightCommand}" Style="{StaticResource RepeatButtonTransparent}"/>
</Track.IncreaseRepeatButton>
<Track.Thumb>
<Thumb Style="{StaticResource ScrollBarThumbHorizontal}"/>
</Track.Thumb>
</Track>
<RepeatButton x:Name="PART_LineRightButton" Command="{x:Static ScrollBar.LineRightCommand}" Grid.Column="2" IsEnabled="{TemplateBinding IsMouseOver}" Style="{StaticResource ScrollBarButton}">
<Path x:Name="ArrowRight" Data="M 1.81,7 C1.81,7 0,7 0,7 0,7 3.18,3.5 3.18,3.5 3.18,3.5 0,0 0,0 0,0 1.81,0 1.81,0 1.81,0 5,3.5 5,3.5 5,3.5 1.81,7 1.81,7 z" Fill="{StaticResource ScrollBar.Static.Glyph}" Margin="3" Stretch="Uniform"/>
</RepeatButton>
</Grid>
<ControlTemplate.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineRightButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineRightButton}" Value="true"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowRight" Value="{StaticResource ScrollBar.Pressed.Glyph}"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineLeftButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineLeftButton}" Value="true"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowLeft" Value="{StaticResource ScrollBar.Pressed.Glyph}"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineRightButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineRightButton}" Value="false"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowRight" Value="{StaticResource ScrollBar.MouseOver.Glyph}"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, ElementName=PART_LineLeftButton}" Value="true"/>
<Condition Binding="{Binding IsPressed, ElementName=PART_LineLeftButton}" Value="false"/>
</MultiDataTrigger.Conditions>
<Setter Property="Fill" TargetName="ArrowLeft" Value="{StaticResource ScrollBar.MouseOver.Glyph}"/>
</MultiDataTrigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Fill" TargetName="ArrowLeft" Value="{StaticResource ScrollBar.Disabled.Glyph}"/>
<Setter Property="Fill" TargetName="ArrowRight" Value="{StaticResource ScrollBar.Disabled.Glyph}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
Finally, use the control template in your ScrollBar by applying the ScrollBarStyle style.
<ScrollBar x:Name="Scrollbar" Orientation="Vertical" BorderBrush="#FFF72323" SmallChange="0.01" Height="32" Margin="0,16,20,32" VerticalAlignment="Stretch" RenderTransformOrigin="1.471,0.469" HorizontalAlignment="Right" Background="#FFDE7C7C" Foreground="#FFDE2525" OpacityMask="#FFF14949" Style="{DynamicResource ScrollBarStyle}">
<ScrollBar.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform Angle="180"/>
<TranslateTransform X="-33.014" Y="1.984"/>
</TransformGroup>
</ScrollBar.RenderTransform>
</ScrollBar>

WPF TreeViewItem HorizontalAlignment

I'm using WPF 4.5.2
My basic structure looks like this
<UserControl>
<Grid>
<ContentPresenter />
</Grid>
</UserControl>
At runtime the ContentPresenter hosts a TreeView, for example
<TreeView>
<TreeViewItem Header="Node 1">
<TreeViewItem Header="Leaf 1" />
<TreeViewItem Header="Leaf 2" />
</TreeViewItem>
<TreeViewItem Header="Node 2" />
</TreeView>
I want the TreeViewItems which header says Node sth. to be stretched to the width of the parent UserControl.
Unfortunately, the TreeView itself is strechted to width of the application window.
How do I have to set width in the style for the node items?
Thanks in advance!

If you want to strech a TreeViewItem, you will have to copy its default ControlTemplate into your XAML and edit it as per your requirements.
It's a bunch of XAML but I am afraid there is no property or anything that you can set to accomplish this without defining a custom template:
<TreeView>
<TreeView.Resources>
<Style x:Key="TreeViewItemFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Checked.Fill" Color="#FF595959"/>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Checked.Stroke" Color="#FF262626"/>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Stroke" Color="#FF27C7F7"/>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Fill" Color="#FFCCEEFB"/>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Checked.Stroke" Color="#FF1CC4F7"/>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Checked.Fill" Color="#FF82DFFB"/>
<PathGeometry x:Key="TreeArrow" Figures="M0,0 L0,6 L6,0 z"/>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Fill" Color="#FFFFFFFF"/>
<SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Stroke" Color="#FF818181"/>
<Style x:Key="ExpandCollapseToggleStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Focusable" Value="False"/>
<Setter Property="Width" Value="16"/>
<Setter Property="Height" Value="16"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Background="Transparent" Height="16" Padding="5,5,5,5" Width="16">
<Path x:Name="ExpandPath" Data="{StaticResource TreeArrow}" Fill="{StaticResource TreeViewItem.TreeArrow.Static.Fill}" Stroke="{StaticResource TreeViewItem.TreeArrow.Static.Stroke}">
<Path.RenderTransform>
<RotateTransform Angle="135" CenterY="3" CenterX="3"/>
</Path.RenderTransform>
</Path>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="RenderTransform" TargetName="ExpandPath">
<Setter.Value>
<RotateTransform Angle="180" CenterY="3" CenterX="3"/>
</Setter.Value>
</Setter>
<Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.Static.Checked.Fill}"/>
<Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.Static.Checked.Stroke}"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Stroke}"/>
<Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Fill}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="True"/>
<Condition Property="IsChecked" Value="True"/>
</MultiTrigger.Conditions>
<Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Checked.Stroke}"/>
<Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Checked.Fill}"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="StretchingTreeViewItemStyle" TargetType="{x:Type TreeViewItem}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="Padding" Value="1,0,0,0"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="FocusVisualStyle" Value="{StaticResource TreeViewItemFocusVisual}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TreeViewItem}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="19" Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<ToggleButton x:Name="Expander" ClickMode="Press" IsChecked="{Binding IsExpanded, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ExpandCollapseToggleStyle}"/>
<Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="1" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true"
Grid.ColumnSpan="2">
<ContentPresenter x:Name="PART_Header" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
<ItemsPresenter x:Name="ItemsHost" Grid.ColumnSpan="2" Grid.Column="1" Grid.Row="1"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="false">
<Setter Property="Visibility" TargetName="ItemsHost" Value="Collapsed"/>
</Trigger>
<Trigger Property="HasItems" Value="false">
<Setter Property="Visibility" TargetName="Expander" Value="Hidden"/>
</Trigger>
<Trigger Property="IsSelected" Value="true">
<Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="true"/>
<Condition Property="IsSelectionActive" Value="false"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightBrushKey}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightTextBrushKey}}"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="VirtualizingPanel.IsVirtualizing" Value="true">
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<VirtualizingStackPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
</TreeView.Resources>
<TreeViewItem Header="Node 1" Style="{StaticResource StretchingTreeViewItemStyle}">
<TreeViewItem Header="Leaf 1" />
<TreeViewItem Header="Leaf 2" />
</TreeViewItem>
<TreeViewItem Header="Node 2" Style="{StaticResource StretchingTreeViewItemStyle}" />
</TreeView>

How to add TooTip to MenuItem

This is my Menu:
<Menu Name="menuInterfaces" ItemsSource="{Binding MenuItems}" Margin="0,8,0,0" Style="{StaticResource StandardMenu}">
<Menu.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type Menu:MenuItemViewModel}" ItemsSource="{Binding Path=MenuItems}">
<Grid>
<TextBlock Text="{Binding Description}"/>
</Grid>
</HierarchicalDataTemplate>
</Menu.ItemTemplate>
</Menu>
And my Style:
<Style TargetType="{x:Type Menu}" x:Key="StandardMenu">
<Style.Resources>
<Style x:Key="{x:Static MenuItem.SeparatorStyleKey}" TargetType="Separator">
<Setter Property="Height" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Separator">
<Border BorderBrush="{StaticResource MenuSeparatorBorderBrush}" BorderThickness="1" Margin="25,0,0,0"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type MenuItem}">
<Setter Property="Foreground" Value="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type Menu}}}"/>
<Setter Property="FontSize" Value="{DynamicResource ApplicationFontSize}"/>
<Setter Property="Command" Value="{Binding Command}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<!--Border 1-->
<Border x:Name="Border" Background="Transparent" BorderBrush="Transparent" CornerRadius="2"
BorderThickness="1" SnapsToDevicePixels="False">
<Grid x:Name="Grid">
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="Col0" MinWidth="17" Width="Auto" SharedSizeGroup="MenuItemIconColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuTextColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuItemIGTColumnGroup"/>
<ColumnDefinition x:Name="Col3" Width="14"/>
</Grid.ColumnDefinitions>
<ContentPresenter Grid.Column="0" x:Name="Icon" VerticalAlignment="Center" ContentSource="Icon"/>
<ContentPresenter Grid.Column="1" Margin="{TemplateBinding Padding}" x:Name="HeaderHost" RecognizesAccessKey="True" ContentSource="Header" VerticalAlignment="Center"/>
<ContentPresenter Grid.Column="2" Margin="8,1,8,1" x:Name="IGTHost" ContentSource="InputGestureText" VerticalAlignment="Center"/>
<Grid Grid.Column="3" Margin="4,0,6,0" x:Name="ArrowPanel" VerticalAlignment="Center">
<Path x:Name="ArrowPanelPath" HorizontalAlignment="Right" VerticalAlignment="Center" Fill="{TemplateBinding Foreground}" Data="M0,0 L0,8 L4,4 z"/>
</Grid>
<Popup IsOpen="{Binding Path=IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}"
Placement="Right"
HorizontalOffset="-1"
x:Name="SubMenuPopup"
Focusable="false"
PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}"
AllowsTransparency="True">
<Grid Margin="0,0,5,5">
<!--Border 2-->
<Border x:Name="SubMenuBorder" CornerRadius="5"
BorderBrush="{StaticResource MenuSeparatorBorderBrush}"
BorderThickness="1"
Background="{StaticResource SubmenuItemBackground}"
SnapsToDevicePixels="True">
<Grid x:Name="SubMenu" Grid.IsSharedSizeScope="True" Margin="2">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Cycle"/>
</Grid>
<Border.Effect>
<DropShadowEffect ShadowDepth="2" Color="Black"/>
</Border.Effect>
</Border>
<!--Border 3-->
<Border Margin="1,0,0,0"
x:Name="TransitionBorder"
Width="0"
Height="2"
VerticalAlignment="Top"
HorizontalAlignment="Left"
Background="{StaticResource SubmenuItemBackground}"
SnapsToDevicePixels="False"
BorderThickness="1"
BorderBrush="{StaticResource SubmenuItemBackground}"/>
</Grid>
</Popup>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Role" Value="TopLevelHeader">
<Setter Property="Padding" Value="6,0,6,2"/>
<Setter TargetName="SubMenuPopup" Property="Placement" Value="Bottom"/>
<Setter TargetName="Col0" Property="MinWidth" Value="0"/>
<Setter TargetName="Col3" Property="Width" Value="Auto"/>
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="IGTHost" Property="Visibility" Value="Collapsed" />
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="SubMenuBorder" Property="BorderThickness" Value="1,1,1,1"/>
<Setter TargetName="SubMenu" Property="Margin" Value="2,3,2,2"/>
<Setter TargetName="TransitionBorder" Property="Width" Value="{Binding ActualWidth, ElementName=Grid}"/>
</Trigger>
<Trigger Property="Role" Value="TopLevelItem">
<Setter Property="Padding" Value="6,0,6,2"/>
<Setter TargetName="Col0" Property="MinWidth" Value="0"/>
<Setter TargetName="Col3" Property="Width" Value="Auto"/>
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="IGTHost" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuHeader">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="10,3,0,3"/>
<Setter TargetName="Border" Property="MinHeight" Value="22"/>
<Setter TargetName="Border" Property="Background" Value="{StaticResource SubmenuItemBackground}"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuItem">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="10,3,0,3"/>
<Setter TargetName="Border" Property="MinHeight" Value="22"/>
<Setter TargetName="ArrowPanel" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="Border" Property="Background" Value="{StaticResource SubmenuItemBackground}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="true"/>
<Condition Property="Role" Value="TopLevelHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource MenuItemHighlightedBackground}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="true"/>
<Condition Property="Role" Value="TopLevelItem"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource MenuItemHighlightedBackground}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="true"/>
<Condition Property="Role" Value="SubmenuHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource SubmenuItemBackgroundHighlighted}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="true"/>
<Condition Property="Role" Value="SubmenuItem"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="{StaticResource SubmenuItemBackgroundHighlighted}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSubmenuOpen" Value="true"/>
<Condition Property="Role" Value="TopLevelHeader"/>
</MultiTrigger.Conditions>
<Setter TargetName="Border" Property="Background" Value="#55B3B3B6"/>
<Setter TargetName="Border" Property="BorderBrush" Value="#55B3B3B6"/>
<Setter TargetName="Border" Property="BorderThickness" Value="1,1,1,0"/>
</MultiTrigger>
<Trigger Property="IsSuspendingPopupAnimation" Value="true">
<Setter TargetName="SubMenuPopup" Property="PopupAnimation" Value="None"/>
</Trigger>
<Trigger Property="Icon" Value="{x:Null}">
<Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
</Trigger>
<!--<Trigger Property="IsMouseOver" Value="False">
<Setter Property="Foreground" Value="LightSlateGray"/>
--><!--<Setter Property="IsSubmenuOpen" Value="False"/>-->
<!--<Setter Property="Cursor" Value="No"/>--><!--
</Trigger>-->
<!--<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="Black"/>
--><!--<Setter Property="IsSubmenuOpen" Value="True"/>
<Setter Property="Cursor" Value="Hand"/>--><!--
</Trigger>
<Trigger Property="IsSubmenuOpen" Value="true">
<Setter TargetName="ArrowPanelPath" Property="Fill" Value="{StaticResource BackgroundSelected}"/>
<Setter Property="Foreground" Value="LightSlateGray"/>
</Trigger>-->
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="False"/>
<Condition Property="IsSubmenuOpen" Value="False"/>
</MultiTrigger.Conditions>
<MultiTrigger.Setters>
<Setter Property="Foreground" Value="LightSlateGray"/>
</MultiTrigger.Setters>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="True"/>
<Condition Property="IsSubmenuOpen" Value="False"/>
</MultiTrigger.Conditions>
<MultiTrigger.Setters>
<Setter Property="Foreground" Value="Silver"/>
<Setter TargetName="Border" Property="Background" Value="#55B3B3B6"/>
</MultiTrigger.Setters>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="False"/>
<Condition Property="IsSubmenuOpen" Value="True"/>
</MultiTrigger.Conditions>
<MultiTrigger.Setters>
<Setter Property="Foreground" Value="Silver"/>
<Setter TargetName="Border" Property="Background" Value="#55B3B3B6"/>
</MultiTrigger.Setters>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="True"/>
<Condition Property="IsSubmenuOpen" Value="True"/>
</MultiTrigger.Conditions>
<MultiTrigger.Setters>
<Setter TargetName="Border" Property="Background" Value="#55B3B3B6"/>
<Setter TargetName="Border" Property="BorderBrush" Value="Transparent"/>
<Setter Property="Foreground" Value="Silver"/>
</MultiTrigger.Setters>
</MultiTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsManagement}" Value="True"/>
</MultiDataTrigger.Conditions>
<Setter Property="IsEnabled" Value="False"/>
<Setter Property="Foreground" Value="{StaticResource MenuDisabledForeground}"/>
</MultiDataTrigger>
<!--<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{StaticResource MenuDisabledForeground}"/>
</Trigger>-->
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Style.Resources>
<Setter Property="Background" Value="{StaticResource LightBackground}"/>
<Setter Property="Foreground" Value="{StaticResource Foreground}"/>
</Style>
View model:
public class MenuItemViewModel : INotifyPropertyChanged
{
private readonly ICommand _command;
public event PropertyChangedEventHandler PropertyChanged;
public string Name { get; set; }
public string Description { get; set; }
public string Id { get; set; }
public bool _isSelected { get; set; }
public MenuItemViewModel()
{
_command = new CommandViewModel(Execute);
}
public bool IsSelected
{
get { return _isSelected; }
set
{
_isSelected = value;
OnPropertyChanged("IsSelected");
}
}
protected void OnPropertyChanged(string name)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
}
public ObservableCollection<MenuItemViewModel> MenuItems { get; set; }
public ICommand Command
{
get { return _command; }
}
private void Execute()
{
// (NOTE: In a view model, you normally should not use
}
}
Now all i want to do is add ToolTip so under Menu section inside my XAML i added this section:
<Menu.ToolTip>
<ToolTip>
<StackPanel Orientation="Vertical">
<TextBlock Text="{Binding Description}"/>
<TextBlock Text="{Binding Name}"/>
<TextBlock Text="{Binding Id}"/>
</StackPanel>
</ToolTip>
</Menu.ToolTip>
But nothings is shown so my suspicion is my Style but i cant find out where..
Any suggestions ?

Based on your bindings it seems to me your intention is to add the tooltip to the individual menu items rather than the top-level menu itself, so you probably want to be doing something like this:
<Style TargetType="{x:Type MenuItem}">
<Setter Property="ToolTip">
<Setter.Value>
<ToolTip>
<StackPanel Orientation="Vertical">
<TextBlock Text="{Binding Description}"/>
<TextBlock Text="{Binding Name}"/>
<TextBlock Text="{Binding Id}"/>
</StackPanel>
</ToolTip>
</Setter.Value>
</Setter>
<!-- etc -->
</Style>

Make ObservableCollection item invisible

This is my Model:
ObservableCollection<Student> StudentsList;
class Student
{
static ObservableCollection<Student> Students;
string SName;
String FName;
}
And i have simple Combobox:
<ComboBox
x:Name="cbStudents"
ItemsSource="{Binding StudentsList}">
I case i want to hide from my Combobox item/items, is it possible to do that without using the function Remove from my Students ObservableCollection ?
Edit:
After try mm8 solution it seems that my combo box style i cause my error so this is my style:
<!-- region combobox style -->
<SolidColorBrush x:Key="ComboBoxNormalBorderBrush" Color="Transparent" />
<SolidColorBrush x:Key="ComboBoxNormalBackgroundBrush" Color="#FF103766" />
<SolidColorBrush x:Key="ComboBoxDisabledForegroundBrush" Color="#888" />
<SolidColorBrush x:Key="ComboBoxDisabledBackgroundBrush" Color="#FF7AA0CD" />
<SolidColorBrush x:Key="ComboBoxDisabledBorderBrush" Color="#FF7AA0CD" />
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="HorizontalAlignment" Value="Stretch" />
<Setter Property="VerticalAlignment" Value="Stretch" />
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBoxItem">
<Border
Name="Border"
Padding="5"
Margin="0"
BorderThickness="0"
CornerRadius="0"
Background="Transparent"
BorderBrush="Transparent" >
<TextBlock TextAlignment="Left">
<ContentPresenter />
</TextBlock>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="true"/>
<Condition Property="IsSelected" Value="false"/>
<Condition Property="IsHighlighted" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="Foreground" Value="White"/>
<Setter TargetName="Border" Property="BorderBrush" Value="#FF103766"/>
<Setter TargetName="Border" Property="Background" Value="#FF103766"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="false"/>
<Condition Property="IsSelected" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="Foreground" Value="White"/>
<Setter TargetName="Border" Property="BorderBrush" Value="#FF103766"/>
<Setter TargetName="Border" Property="Background" Value="#FF103766"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="true"/>
<Condition Property="IsSelected" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="Foreground" Value="White"/>
<Setter TargetName="Border" Property="BorderBrush" Value="#FF103766"/>
<Setter TargetName="Border" Property="Background" Value="#FF103766"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="false"/>
<Condition Property="IsSelected" Value="false"/>
</MultiTrigger.Conditions>
<Setter Property="Foreground" Value="#FF103766"/>
<Setter TargetName="Border" Property="BorderBrush" Value="White"/>
<Setter TargetName="Border" Property="Background" Value="White"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<ControlTemplate TargetType="ToggleButton" x:Key="ComboBoxToggleButtonTemplate">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<Border
Grid.ColumnSpan="2"
Name="Border"
BorderBrush="{StaticResource ComboBoxNormalBorderBrush}"
CornerRadius="0"
BorderThickness="1, 1, 1, 1"
Background="{StaticResource ComboBoxNormalBackgroundBrush}" />
<Border
Grid.Column="1"
Margin="1, 1, 1, 1"
BorderBrush="#444"
Name="ButtonBorder"
CornerRadius="0, 0, 0, 0"
BorderThickness="0, 0, 0, 0"
Background="{StaticResource ComboBoxNormalBackgroundBrush}" />
<Path
Name="Arrow"
Grid.Column="1"
Data="M 0 0 L 8 12 L 16 0 Z"
HorizontalAlignment="Center"
Fill="#444"
VerticalAlignment="Center"
Margin="-10,0,0,0"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="UIElement.IsMouseOver" Value="True">
<Setter Property="Panel.Background" TargetName="ButtonBorder" Value="Transparent"/>
<Setter Property="Shape.Fill" TargetName="Arrow" Value="White"/>
<Setter Property="Panel.Background" TargetName="Border" Value="#FF7AA0CD"/>
</Trigger>
<Trigger Property="UIElement.IsMouseOver" Value="False">
<Setter Property="Shape.Fill" TargetName="Arrow" Value="Transparent"/>
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter Property="Panel.Background" TargetName="ButtonBorder" Value="Transparent"/>
<Setter Property="Shape.Fill" TargetName="Arrow" Value="White"/>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="Panel.Background" TargetName="Border" Value="{StaticResource ComboBoxDisabledBackgroundBrush}"/>
<Setter Property="Panel.Background" TargetName="ButtonBorder" Value="{StaticResource ComboBoxDisabledBackgroundBrush}"/>
<Setter Property="Border.BorderBrush" TargetName="ButtonBorder" Value="{StaticResource ComboBoxDisabledBorderBrush}"/>
<Setter Property="TextElement.Foreground" Value="{StaticResource ComboBoxDisabledForegroundBrush}"/>
<Setter Property="Shape.Fill" TargetName="Arrow" Value="Transparent"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="ComboBoxFlatStyle" TargetType="{x:Type ComboBox}">
<Setter Property="UIElement.SnapsToDevicePixels" Value="True"/>
<Setter Property="FrameworkElement.OverridesDefaultStyle" Value="True"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="True"/>
<Setter Property="TextElement.Foreground" Value="Gainsboro"/>
<Setter Property="FrameworkElement.FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
Name="ToggleButton"
Grid.Column="2"
ClickMode="Press"
Focusable="False"
IsChecked="{Binding Path=IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
Template="{StaticResource ComboBoxToggleButtonTemplate}"/>
<ContentPresenter
Name="ContentSite"
Margin="5, 4, 23, 3"
IsHitTestVisible="False"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Content="{TemplateBinding ComboBox.SelectionBoxItem}"
ContentTemplate="{TemplateBinding ComboBox.SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"/>
<TextBox
Name="PART_EditableTextBox"
Margin="3, 3, 23, 3"
IsReadOnly="{TemplateBinding IsReadOnly}"
Visibility="Hidden"
Background="Transparent"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Focusable="True" >
<TextBox.Template>
<ControlTemplate TargetType="TextBox" >
<Border Name="PART_ContentHost" Focusable="False" />
</ControlTemplate>
</TextBox.Template>
</TextBox>
<Popup
Name="Popup"
Placement="Bottom"
Focusable="False"
AllowsTransparency="True"
IsOpen="{TemplateBinding ComboBox.IsDropDownOpen}"
PopupAnimation="Fade">
<Grid
Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding FrameworkElement.ActualWidth}"
MaxHeight="{TemplateBinding ComboBox.MaxDropDownHeight}">
<Border
Name="DropDownBorder"
Background="Gainsboro"
Margin="0, 0, 0, 0"
CornerRadius="0"
BorderBrush="#FF103766"
BorderThickness="1" />
<ScrollViewer Margin="4" SnapsToDevicePixels="True">
<ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
<!-- Popup showing items -->
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="UIElement.IsMouseOver" Value="True">
<Setter Property="TextElement.Foreground" Value="White"/>
</Trigger>
<Trigger Property="UIElement.IsMouseOver" Value="False">
<Setter Property="TextElement.Foreground" Value="Gainsboro"/>
</Trigger>
<Trigger Property="ItemsControl.HasItems" Value="False">
<Setter Property="FrameworkElement.MinHeight" TargetName="DropDownBorder" Value="95"/>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" Value="Gainsboro"/>
</Trigger>
<Trigger Property="ItemsControl.IsGrouping" Value="True">
<Setter Property="ScrollViewer.CanContentScroll" Value="False"/>
</Trigger>
<Trigger Property="ComboBox.IsEditable" Value="True">
<Setter Property="KeyboardNavigation.IsTabStop" Value="False"/>
<Setter Property="UIElement.Visibility" TargetName="PART_EditableTextBox" Value="Visible"/>
<Setter Property="UIElement.Visibility" TargetName="ContentSite" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- endregion of Flat ComboBox -->

You could use an ItemContainerStyle with a DataTrigger to for example hide a Student with a particular name, e.g.:
<ComboBox
x:Name="cbStudents"
ItemsSource="{Binding StudentsList}">
<ComboBox.ItemContainerStyle>
<Style TargetType="ComboBoxItem">
<Style.Triggers>
<DataTrigger Binding="{Binding SName}" Value="SomeName">
<Setter Property="Visibility" Value="Collapsed" />
</DataTrigger>
</Style.Triggers>
</Style>
</ComboBox.ItemContainerStyle>
</ComboBox>
Edit: (see the comments below) "ComboBoxFlatStyle" is a ComboBox style. The ItemContainerStyle should be based on the implicit ComboBoxItem style:
<ComboBox Style="{StaticResource ComboBoxFlatStyle}" ...>
<ComboBox.ItemContainerStyle>
<Style TargetType="ComboBoxItem" BasedOn="{StaticResource {x:Type ComboBoxItem}}">
...
</Style>
</ComboBox.ItemContainerStyle>
</ComboBox>

you need CollectionViewSource and filter delegate
#region feed items
private ObservableCollection<OpdsItemBase> _FeedItems = new ObservableCollection<OpdsItemBase>();
public ICollectionView FeedItemView
{
get
{
return CollectionViewSource.GetDefaultView(_FeedItems);
}
}
#endregion
and
public string FilterText
{
get { return _filterText; }
set
{
_filterText = value;
FeedItemView.Filter = delegate(object obj)
{
if (string.IsNullOrEmpty(_filterText))
return true;
OpdsItemBase data = obj as OpdsItemBase;
if (data == null)
return false;
return (data.Title.IndexOf(_filterText, 0, StringComparison.InvariantCultureIgnoreCase) > -1);
};
}
}

WPF combobox default hover color on togglebutton

I have a combobox and it's like a simple bar without the arrow. Almost possible to make all sort of color changes except that I can't figure out how to change the default blue color when hovering on the combobox itself. Your help is greatly appreciated.
What's annoying also is the portion in the styling that seems to be where my answer lies, but even commenting it all out did not cause any issue in building the comboBox, so I wonder if I have to override something to make this happen. It's the portion that is termed "ComboBoxTextBoxTemplate"
<Style TargetType="{x:Type ComboBox}">
<Setter Property="Foreground" Value="White" />
<Setter Property="BorderBrush" Value="White" />
<Setter Property="Background" Value="White" />
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
<Setter Property="FontFamily" Value="Resources/#AGENCYR" />
<Setter Property="FontSize" Value="16" />
<Setter Property="FontWeight" Value="Normal"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Top" />
<Setter Property="Cursor" Value="Arrow"/>
<Setter Property="Height" Value="34"/>
<Setter Property="Width" Value="387"/>
<Setter Property="MinWidth" Value="50"/>
<Setter Property="MinHeight" Value="32"/>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton ClickMode="Press" Name="ToggleButton" Grid.Column="2" Focusable="False"
IsChecked="{Binding Path=IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
Template="{StaticResource ComboBoxToggleButtonTemplate}"/>
<ContentPresenter
Margin="3,3,23,3"
HorizontalAlignment="Left"
Name="ContentSite"
VerticalAlignment="Center"
ContentTemplate="{TemplateBinding ComboBox.SelectionBoxItemTemplate}"
Content="{TemplateBinding ComboBox.SelectionBoxItem}"
IsHitTestVisible="False" />
<TextBox
Margin="3,3,23,3"
Visibility="Hidden"
HorizontalAlignment="Left"
Name="PART_EditableTextBox"
Background="Transparent"
VerticalAlignment="Center"
Style="{x:Null}"
IsReadOnly="False"
Focusable="True"
xml:space="preserve"
Template="{StaticResource ComboBoxTextBoxTemplate}"/>
<Popup
Placement="Bottom"
Name="Popup"
Focusable="False"
AllowsTransparency="True"
IsOpen="{TemplateBinding ComboBox.IsDropDownOpen}"
PopupAnimation="Fade">
<Grid
MinWidth="{TemplateBinding FrameworkElement.ActualWidth}"
MaxHeight="{TemplateBinding ComboBox.MaxDropDownHeight}"
Name="DropDown"
SnapsToDevicePixels="True">
<Border
BorderBrush="{StaticResource NormalBorderBrush}"
BorderThickness="1,1,1,1"
Name="DropDownBorder"
Background="{StaticResource WindowBackgroundBrush}"/>
<ScrollViewer
Margin="4,6,4,6"
SnapsToDevicePixels="True">
<ItemsPresenter
KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="UIElement.IsMouseOver" Value="True">
<Setter Property="Panel.Background" Value="Red"/>
</Trigger>
<Trigger Property="ItemsControl.HasItems" Value="False">
<Setter Property="FrameworkElement.MinHeight" TargetName="DropDownBorder" Value="95"/>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
<Trigger Property="ItemsControl.IsGrouping" Value="True">
<Setter Property="ScrollViewer.CanContentScroll" Value="False"/>
</Trigger>
<Trigger Property="Window.AllowsTransparency" SourceName="Popup" Value="True">
<Setter Property="Border.CornerRadius" TargetName="DropDownBorder" Value="4"/>
<Setter Property="FrameworkElement.Margin" TargetName="DropDownBorder" Value="0,2,0,0"/>
</Trigger>
<Trigger Property="ComboBox.IsEditable" Value="True">
<Setter Property="KeyboardNavigation.IsTabStop" Value="False"/>
<Setter Property="UIElement.Visibility" TargetName="PART_EditableTextBox" Value="Visible"/>
<Setter Property="UIElement.Visibility" TargetName="ContentSite" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
Name="ToggleButton"
BorderBrush="Gray"
BorderThickness="0"
Background="Gray"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Release">
</ToggleButton>
<ContentPresenter
Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="10,3,30,3"
VerticalAlignment="Center"
HorizontalAlignment="Center" />
<Popup
Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Fade">
<Grid
Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border
x:Name="DropDownBorder"
Background="White"
BorderThickness="1"
BorderBrush="Black"/>
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
<Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="0"/>
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0"/>
</Trigger>
<Trigger Property="IsEditable" Value="true">
<Setter Property="IsTabStop" Value="false"/>
<Setter TargetName="ContentSite" Property="Visibility" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="Foreground" Value="Black" />
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border
Name="Border"
SnapsToDevicePixels="True"
Padding="2,2,2,2">
<ContentPresenter/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ComboBoxItem.IsHighlighted" Value="True">
<Setter Property="Panel.Background" TargetName="Border" Value="{StaticResource CustomBrush1}"/>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}"/>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}"/>
</Style.Resources>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True" >
<Setter Property="Foreground" Value="White" />
<Setter Property="Background" Value="#24afb2" />
</Trigger>
<Trigger Property="IsSelected" Value="True" >
<Setter Property="Background" Value="#24afb2" />
<Setter Property="Foreground" Value="White" />
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsFocused" Value="True"/>
<Condition Property="IsMouseOver" Value="False"/>
</MultiTrigger.Conditions>
<Setter Property="Foreground" Value="White" />
<Setter Property="Background" Value="#24afb2" />
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="True"/>
<Condition Property="IsMouseOver" Value="False"/>
</MultiTrigger.Conditions>
<Setter Property="Foreground" Value="Black" />
</MultiTrigger>
</Style.Triggers>
</Style>
<ControlTemplate TargetType="TextBox" x:Key="ComboBoxTextBoxTemplate">
<Border
Name="PART_ContentHost"
Background="Gray"
Focusable="False" />
</ControlTemplate>
<ControlTemplate TargetType="ToggleButton" x:Key="ComboBoxToggleButtonTemplate">
<!--<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="16" />
</Grid.ColumnDefinitions>
<Border
BorderBrush="Black"
CornerRadius="2,2,2,2"
BorderThickness="1,1,1,1"
Name="Border"
Background="WhiteSmoke"
Grid.ColumnSpan="2" />
<Border
Margin="1,1,1,1"
BorderBrush="{StaticResource NormalBorderBrush}"
CornerRadius="2,0,0,2"
BorderThickness="0,0,1,0"
Background="AliceBlue"
Grid.Column="0" />
<Path
Margin="0,0,3,0"
Data="M0,0L4,4 8,0z"
HorizontalAlignment="Center"
Fill="{StaticResource GlyphBrush}"
Name="Arrow"
VerticalAlignment="Center"
Width="8"
Grid.Column="1" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="UIElement.IsMouseOver" Value="True">
<Setter Property="Panel.Background" TargetName="Border" Value="WhiteSmoke"/>
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter Property="Panel.Background" TargetName="Border" Value="WhiteSmoke"/>
<Setter Property="Shape.Fill" TargetName="Arrow" Value="#FF8D979E"/>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="Panel.Background" TargetName="Border" Value="{StaticResource DisabledBackgroundBrush}"/>
<Setter Property="Border.BorderBrush" TargetName="Border" Value="{StaticResource DisabledBorderBrush}"/>
<Setter Property="TextElement.Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
<Setter Property="Shape.Fill" TargetName="Arrow" Value="#66FFFFFF"/>
</Trigger>
</ControlTemplate.Triggers>-->
</ControlTemplate>
<!-- The Actual ComboBox -->
<Grid>
<ComboBox x:Name="cmbNames" ItemsSource="{Binding SelectedName}" DisplayMemberPath ="FirstName" Width="454">
</ComboBox>
<TextBlock x:Name="txtComboBox" Style="{StaticResource ComboTextBox}"
Visibility="{Binding SelectedItem, ElementName=cmbNames, Converter={StaticResource NullToVisibilityConverter}}"
Text=" Select ..." />
</Grid>

I've done my best to figure out what you're trying to accomplish here, and I made some tweaks that should at least get you to a reasonable starting point. I had to improve with the colors since you left out some of the brush resources you were referencing ;).
<SolidColorBrush x:Key="CustomBrush1"
Color="Magenta" />
<SolidColorBrush x:Key="DisabledForegroundBrush"
Color="Gray" />
<SolidColorBrush x:Key="DisabledBackgroundBrush"
Color="Gray" />
<SolidColorBrush x:Key="DisabledBorderBrush"
Color="Gray" />
<SolidColorBrush x:Key="NormalBorderBrush"
Color="Black" />
<DrawingBrush x:Key="GlyphBrush">
<DrawingBrush.Drawing>
<GeometryDrawing Brush="Black"
Geometry="M 0,0 L 4,4 L 8,0 Z" />
</DrawingBrush.Drawing>
</DrawingBrush>
<ControlTemplate TargetType="TextBox"
x:Key="ComboBoxTextBoxTemplate">
<Border Name="PART_ContentHost"
Background="Gray"
Focusable="False" />
</ControlTemplate>
<ControlTemplate TargetType="ToggleButton"
x:Key="ComboBoxToggleButtonTemplate">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="16" />
</Grid.ColumnDefinitions>
<Border BorderBrush="Black"
CornerRadius="2,2,2,2"
BorderThickness="1,1,1,1"
Name="Border"
Background="WhiteSmoke"
Grid.ColumnSpan="2" />
<Path Margin="0,0,3,0"
Data="M0,0L4,4 8,0z"
HorizontalAlignment="Center"
Fill="{StaticResource GlyphBrush}"
Name="Arrow"
VerticalAlignment="Center"
Width="8"
Grid.Column="1" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="UIElement.IsMouseOver"
Value="True">
<Setter Property="Panel.Background"
TargetName="Border"
Value="DodgerBlue" />
</Trigger>
<Trigger Property="ToggleButton.IsChecked"
Value="True">
<Setter Property="Panel.Background"
TargetName="Border"
Value="WhiteSmoke" />
<Setter Property="Shape.Fill"
TargetName="Arrow"
Value="#FF8D979E" />
</Trigger>
<Trigger Property="UIElement.IsEnabled"
Value="False">
<Setter Property="Panel.Background"
TargetName="Border"
Value="{StaticResource DisabledBackgroundBrush}" />
<Setter Property="Border.BorderBrush"
TargetName="Border"
Value="{StaticResource DisabledBorderBrush}" />
<Setter Property="TextElement.Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
<Setter Property="Shape.Fill"
TargetName="Arrow"
Value="#66FFFFFF" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="Foreground"
Value="Black" />
<Setter Property="BorderBrush"
Value="White" />
<Setter Property="Background"
Value="White" />
<Setter Property="SnapsToDevicePixels"
Value="true" />
<Setter Property="OverridesDefaultStyle"
Value="true" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility"
Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility"
Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll"
Value="true" />
<Setter Property="FontFamily"
Value="Resources/#AGENCYR" />
<Setter Property="FontSize"
Value="16" />
<Setter Property="FontWeight"
Value="Normal" />
<Setter Property="HorizontalAlignment"
Value="Left" />
<Setter Property="VerticalAlignment"
Value="Top" />
<Setter Property="Cursor"
Value="Arrow" />
<Setter Property="Height"
Value="34" />
<Setter Property="Width"
Value="387" />
<Setter Property="MinWidth"
Value="50" />
<Setter Property="MinHeight"
Value="32" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton Name="ToggleButton"
BorderBrush="Gray"
BorderThickness="0"
Background="Gray"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Release"
Template="{StaticResource ComboBoxToggleButtonTemplate}" />
<ContentPresenter Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="10,3,30,3"
VerticalAlignment="Center"
HorizontalAlignment="Center" />
<Popup Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Fade">
<Grid Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder"
Background="White"
BorderThickness="1"
BorderBrush="Black" />
<ScrollViewer Margin="4,6,4,6"
SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True"
KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems"
Value="false">
<Setter TargetName="DropDownBorder"
Property="MinHeight"
Value="95" />
</Trigger>
<Trigger Property="IsGrouping"
Value="true">
<Setter Property="ScrollViewer.CanContentScroll"
Value="false" />
</Trigger>
<Trigger SourceName="Popup"
Property="Popup.AllowsTransparency"
Value="true">
<Setter TargetName="DropDownBorder"
Property="CornerRadius"
Value="0" />
<Setter TargetName="DropDownBorder"
Property="Margin"
Value="0,2,0,0" />
</Trigger>
<Trigger Property="IsEditable"
Value="true">
<Setter Property="IsTabStop"
Value="false" />
<Setter TargetName="ContentSite"
Property="Visibility"
Value="Hidden" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="Foreground"
Value="Black" />
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border Name="Border"
SnapsToDevicePixels="True"
Padding="2,2,2,2">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ComboBoxItem.IsHighlighted"
Value="True">
<Setter Property="Panel.Background"
TargetName="Border"
Value="{StaticResource CustomBrush1}" />
</Trigger>
<Trigger Property="UIElement.IsEnabled"
Value="False">
<Setter Property="TextElement.Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" />
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" />
</Style.Resources>
<Style.Triggers>
<Trigger Property="IsMouseOver"
Value="True">
<Setter Property="Foreground"
Value="White" />
<Setter Property="Background"
Value="#24afb2" />
</Trigger>
<Trigger Property="IsSelected"
Value="True">
<Setter Property="Background"
Value="#24afb2" />
<Setter Property="Foreground"
Value="White" />
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsFocused"
Value="True" />
<Condition Property="IsMouseOver"
Value="False" />
</MultiTrigger.Conditions>
<Setter Property="Foreground"
Value="White" />
<Setter Property="Background"
Value="#24afb2" />
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected"
Value="True" />
<Condition Property="IsMouseOver"
Value="False" />
</MultiTrigger.Conditions>
<Setter Property="Foreground"
Value="Black" />
</MultiTrigger>
</Style.Triggers>
</Style>
The style doesn't define a template for editable ComboBox instances, which I think may have been what your other template was trying to do. Perhaps you can extract it to a separate template, which you can set via a Style setter when IsEditable is True.

Mike, I took your template and embedded it with mine using the textbox, however I got the arrow back in the comboBox which I really wanted to avoid. But the good thing was that I removed the textbox from inside the combobox template and was able to remove that another template.... (it's all shown as commented)
<Style x:Key="ComboTextBox" TargetType="{x:Type TextBlock}">
<Setter Property="IsHitTestVisible" Value="False" />
<Setter Property="FontFamily" Value="Resources/#AGENCYR" />
<Setter Property="FontSize" Value="16" />
<Setter Property="FontWeight" Value="Normal"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Center" />
<!--<Setter Property="Foreground" Value="#FFA2C3C4" />-->
<!--<Setter Property="Foreground" Value="#FF3CEFF4" />-->
<Setter Property="Foreground" Value="White" />
<!--<Setter Property="Background" Value="Yellow" />-->
</Style>
<ControlTemplate TargetType="TextBox"
x:Key="ComboBoxTextBoxTemplate">
<Border Name="PART_ContentHost"
Background="Gray"
Focusable="False" />
</ControlTemplate>
<ControlTemplate TargetType="ToggleButton"
x:Key="ComboBoxToggleButtonTemplate">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="16" />
</Grid.ColumnDefinitions>
<Border BorderBrush="Gray"
CornerRadius="2,2,2,2"
BorderThickness="0,0,0,0"
Name="Border"
Background="Gray"
Grid.ColumnSpan="2" />
<Path Margin="0,0,3,0"
Data="M0,0L4,4 8,0z"
HorizontalAlignment="Center"
Fill="{StaticResource GlyphBrush}"
Name="Arrow"
VerticalAlignment="Center"
Width="8"
Grid.Column="1" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="UIElement.IsMouseOver"
Value="True">
<Setter Property="Panel.Background"
TargetName="Border"
Value="Gray" />
</Trigger>
<Trigger Property="ToggleButton.IsChecked"
Value="True">
<Setter Property="Panel.Background"
TargetName="Border"
Value="Gray" />
<Setter Property="Shape.Fill"
TargetName="Arrow"
Value="#FF8D979E" />
</Trigger>
<Trigger Property="UIElement.IsEnabled"
Value="False">
<Setter Property="Panel.Background"
TargetName="Border"
Value="{StaticResource DisabledBackgroundBrush}" />
<Setter Property="Border.BorderBrush"
TargetName="Border"
Value="{StaticResource DisabledBorderBrush}" />
<Setter Property="TextElement.Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
<Setter Property="Shape.Fill"
TargetName="Arrow"
Value="#66FFFFFF" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="Foreground"
Value="#FF3CEFF4" />
<Setter Property="BorderBrush"
Value="White" />
<Setter Property="Background"
Value="White" />
<Setter Property="SnapsToDevicePixels"
Value="true" />
<Setter Property="OverridesDefaultStyle"
Value="true" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility"
Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility"
Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll"
Value="true" />
<Setter Property="FontFamily"
Value="Resources/#AGENCYR" />
<Setter Property="FontSize"
Value="16" />
<Setter Property="FontWeight"
Value="Normal" />
<Setter Property="HorizontalAlignment"
Value="Left" />
<Setter Property="VerticalAlignment"
Value="Top" />
<Setter Property="Cursor"
Value="Arrow" />
<Setter Property="Height"
Value="34" />
<Setter Property="Width"
Value="387" />
<Setter Property="MinWidth"
Value="50" />
<Setter Property="MinHeight"
Value="32" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton Name="ToggleButton"
BorderBrush="Gray"
BorderThickness="0"
Background="Gray"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Release"
Template="{StaticResource ComboBoxToggleButtonTemplate}" />
<ContentPresenter Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="10,3,30,3"
VerticalAlignment="Center"
HorizontalAlignment="Left" />
<!-- REMOVED THIS ONE TOO <TextBox
Margin="3,3,23,3"
Visibility="Hidden"
HorizontalAlignment="Left"
Name="PART_EditableTextBox"
Background="Transparent"
VerticalAlignment="Left"
Style="{x:Null}"
IsReadOnly="False"
Focusable="True"
xml:space="preserve"
Template="{StaticResource ComboBoxTextBoxTemplate}"/>-->
<Popup Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Fade">
<Grid Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border Name="DropDownBorder"
Background="White"
BorderThickness="1"
BorderBrush="Black" />
<ScrollViewer Margin="4,6,4,6"
SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True"
KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems"
Value="false">
<Setter TargetName="DropDownBorder"
Property="MinHeight" Value="95" />
</Trigger>
<Trigger Property="IsGrouping"
Value="true">
<Setter Property="ScrollViewer.CanContentScroll"
Value="false" />
</Trigger>
<Trigger SourceName="Popup"
Property="Popup.AllowsTransparency"
Value="true">
<Setter TargetName="DropDownBorder"
Property="CornerRadius"
Value="0" />
<Setter TargetName="DropDownBorder"
Property="Margin"
Value="0,2,0,0" />
</Trigger>
<Trigger Property="IsEditable"
Value="true">
<Setter Property="IsTabStop"
Value="false" />
<Setter TargetName="ContentSite"
Property="Visibility"
Value="Hidden" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<!-- FINALLY REMOVED THIS ONE <Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
Name="ToggleButton"
BorderBrush="Gray"
BorderThickness="0"
Background="Gray"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Release">
</ToggleButton>
<ContentPresenter
Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="10,3,30,3"
VerticalAlignment="Center"
HorizontalAlignment="Left" />
<Popup
Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Fade">
<Grid
Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border
x:Name="DropDownBorder"
Background="White"
BorderThickness="1"
BorderBrush="Black"/>
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
<Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="0"/>
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0"/>
</Trigger>
<Trigger Property="IsEditable" Value="true">
<Setter Property="IsTabStop" Value="false"/>
<Setter TargetName="ContentSite" Property="Visibility" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>-->
</Style>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="Foreground"
Value="Black" />
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border Name="Border"
SnapsToDevicePixels="True"
Padding="2,2,2,2">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ComboBoxItem.IsHighlighted"
Value="True">
<Setter Property="Panel.Background"
TargetName="Border"
Value="{StaticResource CustomBrush1}" />
</Trigger>
<Trigger Property="UIElement.IsEnabled"
Value="False">
<Setter Property="TextElement.Foreground"
Value="{StaticResource DisabledForegroundBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" />
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" />
</Style.Resources>
<Style.Triggers>
<Trigger Property="IsMouseOver"
Value="True">
<Setter Property="Foreground"
Value="White" />
<Setter Property="Background"
Value="#24afb2" />
</Trigger>
<Trigger Property="IsSelected"
Value="True">
<Setter Property="Background"
Value="#24afb2" />
<Setter Property="Foreground"
Value="White" />
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsFocused"
Value="True" />
<Condition Property="IsMouseOver"
Value="False" />
</MultiTrigger.Conditions>
<Setter Property="Foreground"
Value="White" />
<Setter Property="Background"
Value="#24afb2" />
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected"
Value="True" />
<Condition Property="IsMouseOver"
Value="False" />
</MultiTrigger.Conditions>
<Setter Property="Foreground"
Value="Black" />
</MultiTrigger>
</Style.Triggers>
</Style>
This now works by setting the ToogleButton in ControlTemplate for both the trigger as:
<Trigger Property="UIElement.IsMouseOver" Value="True">
<Setter Property="Panel.Background" TargetName="Border" Value="Gray" />
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter Property="Panel.Background" TargetName="Border" Value="Gray" />
</Trigger>
And the combobox being used:
<!-- The Actual ComboBox -->
<Grid>
<ComboBox x:Name="cmbNames" ItemsSource="{Binding SelectedName}" DisplayMemberPath ="FirstName" Width="454">
</ComboBox>
<TextBlock x:Name="txtComboBox" Style="{StaticResource ComboTextBox}"
Visibility="{Binding SelectedItem, ElementName=cmbNames, Converter={StaticResource NullToVisibilityConverter}}"
Text=" Select ..." />
</Grid>
Hopefully someone can look at this temp solution and offer me the solution on how to get rid of the arrow on the combobox.

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