WPF Checkbox Custom Style Check disappeared - wpf

Question

Maybe this is redundant but I could not find anything. I probably am missing something simple.
The checkbox in question is set in the codebehind on a selection event
chkEmpOK.IsChecked = _cfgUsr.IsEnabled;
This worked as desired until I tried to add a custom style. Now the checkbox displays the text but the image/glyph/box part of the checkbox does not display. I am assuming I did something wrong in the style. Here is the control and style from the XAML:
<CheckBox x:Name="chkEmpOK" Grid.Column="2" Grid.Row="4" Margin="10,10,0,0">
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Content" Value="Click Me to Enable"/>
<Setter Property="Foreground" Value="Red"/>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content" Value="To remove access- click me"/>
</Trigger>
</ControlTemplate.Triggers>
<ContentPresenter Content="{TemplateBinding Content}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</CheckBox.Style>
</CheckBox>
This is what it looks like
Hopefully I am missing something simple. Does it have anything to do with it inheriting from ToggleButton?

Answer 1

You are overriding original checkbox style with your own that has no code related to box. Navigate to Document Outline window, right click on your checkbox and then Edit Template -> Edit Copy.
Then you can import template style to window resources and edit it:
<Window.Resources>
<Style x:Key="FocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="OptionMark.Static.Background" Color="#FFFFFFFF"/>
<SolidColorBrush x:Key="OptionMark.Static.Border" Color="#FF707070"/>
<Style x:Key="OptionMarkFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="14,0,0,0" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="OptionMark.MouseOver.Background" Color="#FFF3F9FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Border" Color="#FF5593FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Background" Color="#FFE6E6E6"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Border" Color="#FFBCBCBC"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Glyph" Color="#FF707070"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Background" Color="#FFD9ECFF"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Border" Color="#FF3C77DD"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Static.Glyph" Color="#FF212121"/>
<Style x:Key="CheckBoxStyle1" TargetType="{x:Type CheckBox}">
<Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
<Setter Property="Background" Value="{StaticResource OptionMark.Static.Background}"/>
<Setter Property="BorderBrush" Value="{StaticResource OptionMark.Static.Border}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<Grid x:Name="templateRoot" Background="Transparent" SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Border x:Name="checkBoxBorder" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<Grid x:Name="markGrid">
<Path x:Name="optionMark" Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z " Fill="{StaticResource OptionMark.Static.Glyph}" Margin="1" Opacity="0" Stretch="None"/>
<Rectangle x:Name="indeterminateMark" Fill="{StaticResource OptionMark.Static.Glyph}" Margin="2" Opacity="0"/>
</Grid>
</Border>
<ContentPresenter x:Name="contentPresenter" Grid.Column="1" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasContent" Value="true">
<Setter Property="FocusVisualStyle" Value="{StaticResource OptionMarkFocusVisual}"/>
<Setter Property="Padding" Value="4,-1,0,0"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.MouseOver.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.MouseOver.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.MouseOver.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.MouseOver.Glyph}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Disabled.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Disabled.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.Disabled.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.Disabled.Glyph}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Pressed.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Pressed.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.Pressed.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.Pressed.Glyph}"/>
</Trigger>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Opacity" TargetName="optionMark" Value="1"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="0"/>
<Setter Property="Content" Value="To remove access- click me" />
</Trigger>
<Trigger Property="IsChecked" Value="false">
<Setter Property="Content" Value="Click Me to Enable" />
</Trigger>
<Trigger Property="IsChecked" Value="{x:Null}">
<Setter Property="Opacity" TargetName="optionMark" Value="0"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="1"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
Edit related triggers as you like:
<Trigger Property="IsChecked" Value="true">
<Setter Property="Opacity" TargetName="optionMark" Value="1"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="0"/>
<Setter Property="Content" Value="To remove access- click me" />
</Trigger>
<Trigger Property="IsChecked" Value="false">
<Setter Property="Content" Value="Click Me to Enable" />
</Trigger>
The other way is yo add your own code for the box.
Like StackPanel with Border and vector image. See example below:
<CheckBox x:Name="chkEmpOK" Margin="10,10,0,0">
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<StackPanel Orientation="Horizontal"
SnapsToDevicePixels="True">
<Border Width="15"
Height="14"
BorderThickness="1"
BorderBrush="DimGray"
VerticalAlignment="Center"
Background="{TemplateBinding Background}">
<Viewbox Margin="1">
<Path
x:Name="ckeckMark"
Fill="Black"
Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z " />
</Viewbox>
</Border>
<ContentPresenter Margin="5 0 0 0"
Focusable="False"/>
</StackPanel>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Content" Value="Click Me to Enable" />
<Setter Property="Foreground" Value="Red" />
<Setter Property="Visibility" Value="Hidden" TargetName="ckeckMark" />
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content" Value="To remove access- click me" />
<Setter Property="Visibility" Value="Visible" TargetName="ckeckMark" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</CheckBox.Style>
</CheckBox>
Another approach is to use Checked and Unchecked events to set content and color for your checkbox. If your program is large consider to use MVVM pattern.

Answer 2

there is no need to override Template to change Content or Foreground. Style triggers should do:
<CheckBox x:Name="chkEmpOK" Grid.Column="2" Grid.Row="4" Margin="10,10,0,0">
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Style.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Content" Value="Click Me to Enable"/>
<Setter Property="Foreground" Value="Red"/>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content" Value="To remove access- click me"/>
</Trigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>