WPF ComboBox Residing in a ListBox Click Event - wpf

Question

I have a little issue.
I have a a ListBox that is bound to a list of object. These Objects have a property that can be set. I have in the LIstBox ItemTemplate (a datatemplate) a combobox that is about to the objects property and the combobox has some hardcoded values.
My problem is that when the list box is displayed and I click ont he combo, only the ListBoxItem is selected, The click never makes it to the combobox!
just to give you an idea.
<ListBox SelectionMode="Multiple" VerticalAlignment="Center" HorizontalAlignment="Left" Style="{StaticResource Style_ListBox}" ItemsSource="{Binding ModeSampleSets, Mode=OneWay}">
<ListBox.ItemTemplate>
<DataTemplate DataType="ListBoxItem">
<Grid>
<StackPanel>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" FontWeight="Bold" Text="{Binding Name, Mode=OneWay}" Width="{Binding ElementName=this, Path=Content.DesiredWidth}"/>
<ComboBox Focusable="False" Width="10" Height="10" Grid.Column="2" Style="{StaticResource Style_ComboBoxColorPicker}" SelectedItem="{Binding GraphColor, Mode=TwoWay}" >
<ComboBoxItem IsSelected="True" Content="#e62a2c" />
<ComboBoxItem Content="#ec7c28"></ComboBoxItem>
<ComboBoxItem Content="#69c5d8"></ComboBoxItem>
<ComboBoxItem Content="#36b34b"></ComboBoxItem>
<ComboBoxItem Content="#415dae"></ComboBoxItem>
<ComboBoxItem Content="#9056A3"></ComboBoxItem>
<ComboBoxItem Content="#0b0b0b"></ComboBoxItem>
<ComboBoxItem Content="#666666"></ComboBoxItem>
<ComboBoxItem Content="#a6a6a6"></ComboBoxItem>
</ComboBox>
</Grid>
<StackPanel Orientation="Horizontal">
<TextBlock FontSize="8" Text="{Binding SampleAnalysisDate, Mode=OneWay}" Width="{Binding ElementName=this, Path=Content.DesiredWidth}"/>
</StackPanel>
<StackPanel Orientation="Horizontal" Margin="0,4,0,0">
<TextBlock FontSize="14" Text="{Binding WaveLengthStart, Mode=OneWay}" Width="{Binding ElementName=this, Path=Content.DesiredWidth}"/>
<TextBlock Margin="2,0,0,0" FontSize="14" Text="{x:Static UIStrings:WaveLengthScanStrings.WaveLengthScanModeView_SampleWaveLength_Seperator}" Width="{Binding ElementName=this, Path=Content.DesiredWidth}"/>
<TextBlock Margin="2,0,0,0" FontSize="14" Text="{Binding WaveLengthStop, Mode=OneWay}" Width="{Binding ElementName=this, Path=Content.DesiredWidth}"/>
</StackPanel>
</StackPanel>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Styles:
<Style x:Key="Style_ComboBoxColorPickerItemContainerStyle" TargetType="ComboBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBoxItem">
<Border Name="ItemBorder" Margin="2" BorderBrush="Transparent" BorderThickness="1.5" Background="Transparent">
<ContentPresenter Margin="2" Height="20" Width="20" ContentTemplate="{StaticResource DataTemplate_ComboBoxColorPickerItemTemplate}" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter TargetName="ItemBorder" Property="BorderBrush" Value="Black"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="Style_ComboBoxColorPicker" TargetType="ComboBox">
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<WrapPanel MaxWidth="100"/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemTemplate" Value="{StaticResource DataTemplate_ComboBoxColorPickerItemTemplate}"/>
<Setter Property="ItemContainerStyle" Value="{StaticResource Style_ComboBoxColorPickerItemContainerStyle}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
ClickMode="Press"
Name="ComboToggleButton"
IsChecked="{Binding Path=IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
Focusable="False"
>
<ToggleButton.Template>
<ControlTemplate TargetType="ToggleButton">
<ContentPresenter/>
</ControlTemplate>
</ToggleButton.Template>
<ContentPresenter Content="{TemplateBinding ComboBox.SelectionBoxItem}" ContentTemplate="{TemplateBinding ComboBox.ItemTemplate}" ContentTemplateSelector="{TemplateBinding ComboBox.ItemTemplateSelector}"/>
</ToggleButton>
<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="Gray"
BorderThickness="1.5"
Name="DropDownBorder"
Background="White">
<ScrollViewer
Margin="0"
SnapsToDevicePixels="True">
<ItemsPresenter />
</ScrollViewer>
</Border>
</Grid>
</Popup>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="Style_ListBox" TargetType="ListBox">
<Setter Property="BorderBrush" Value="{StaticResource Brush_PanelInnerBorder}"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Margin" Value="5"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="False"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<StackPanel Background="{StaticResource Brush_PanelInnerBackground}"/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemContainerStyle">
<Setter.Value>
<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Grid Background="{StaticResource Brush_PanelInnerBackground}" Margin="-.5">
<Border x:Name="BorderItem" Margin="0" ClipToBounds="True" BorderThickness="0" Style="{StaticResource Style_PanelInnerBorder}">
<Rectangle x:Name="BackgroundRec" Fill="Transparent" Stroke="Transparent" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" HorizontalAlignment="Left" VerticalAlignment="Top"/>
</Border>
<ContentPresenter Name="TheContentPresenter" Margin="5" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Border Margin="0" ClipToBounds="True" Style="{StaticResource Style_PanelInnerBorder}">
<Rectangle VerticalAlignment="Bottom" Width="{TemplateBinding Width}" Height="0"/>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="BorderItem" Property="Background" Value="{StaticResource Brush_Highlight}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
</Style>

Answer 1

Make sure you don't have IsHitTestVisible="False" on the ComboBox's style. Can you please post here the styles you're using?

Answer 2

I found the problem.
My ItemContainerStyle Template had a rectangle and i guess it was implying zindex somehow. When I expclicity told it to draw the content before the border and it's rectangle, it worked. i just had to add Panel.ZIndex="1" and it worked.