Bounded Checkbox not firing event - wpf

Question

I have a check box where the property ischecked is bounded to another checkbox. In the resources block i've set a style that sets the event triger for a checkbox. Here's the code:
<Style x:Key="cbClickEvent" TargetType="{x:Type CheckBox}">
<EventSetter Event="Click" Handler="CheckBox_Click"/>
</Style>
<StackPanel Grid.Column="0" Grid.Row="1">
<CheckBox x:Name="cbAll" Content=" All" VerticalAlignment="Center"/>
<CheckBox Content=" MyCB" VerticalAlignment="Center" IsChecked="{Binding ElementName=cbAll, Path=IsChecked, Mode=OneWay}" Style="{StaticResource cbClickEvent}"/>
</StackPanel>
When i click the checkbox MyCB the event is triggered, but not when i clicked the checkbox All. What am i missing?

Answer 1

This is because when you click on the "All" checkbox the value gets transfered to the "MyCB" checkbox via binding. But in the style you subscribe to the Clickevent which obviously is not firing in this case because you don't actually click on the "MyCB" checkbox (you click on "All").
What you can do is, instead of subscribing to the Click event, you can subscribe to the Checked and Unchecked events:
<EventSetter Event="Checked" Handler="CheckBox_Checked"/>
<EventSetter Event="Unchecked" Handler="CheckBox_Unchecked"/>

Answer 2

2 possible solitions:
1) Add the
Style="{StaticResource cbClickEvent}"
To the cbAll CheckBox
2) Remove that line from the MyCB CheckBox and remove the x:Key property from the style. It will look like this:
<Window.Resources>
<Style TargetType="{x:Type CheckBox}">
<EventSetter Event="Click" Handler="CheckBox_Click"/>
</Style>
</Window.Resources>
<StackPanel Grid.Column="0" Grid.Row="1">
<CheckBox x:Name="cbAll"
Content=" All"
VerticalAlignment="Center" />
<CheckBox Content=" MyCB"
VerticalAlignment="Center"
IsChecked="{Binding ElementName=cbAll, Path=IsChecked, Mode=OneWay}" />
</StackPanel>