Question

The following is a Simple Style for ListBoxItem, ListBoxItem has a son Border. Border has a Padding property with value of 8, I want to change the value to 0, when the item is selected. How can I write the trigger?

    <??Style TargetType='{x:Type ListBoxItem}'>         <Setter Property='Background' Value='Transparent' />         <Setter Property='Template'>             <Setter.Value>                 <ControlTemplate TargetType='{x:Type ListBoxItem}' >                     <Border                          SnapsToDevicePixels='True'                          HorizontalAlignment='Center'                          VerticalAlignment='Center'                         Padding = '8'                         Background='{TemplateBinding Background}'>                         <ContentPresenter />                     </Border>                     <ControlTemplate.Triggers>                         <Trigger Property='IsSelected' Value='True'>                             ??<Setter Property='Padding' Value='0' />??   <----How Can I do this?                         </Trigger>                     </ControlTemplate.Triggers>                 </ControlTemplate>             </Setter.Value>         </Setter>     <??/Style> 

Answer 1

Try giving the Border a name (using, for example, x:Name=’border1′) then using the TargetName property of Setter, like this:

<Setter TargetName='border1' Property='Padding' Value='0' /> 

Not sure if it’ll work in a control template like that, but give it a go.