Question

I’m using Visual Studio 11 in Windows8. And setting the data trigger in a Grid Application (Metro) shows me this error in XAML:

the attachable property triggers was not found in style

<Image Stretch="UniformToFill">
     <Image.Style>
         <Style TargetType="Image">
             <Setter Property="Source" Value="{Binding Image}"/>
             <Style.Triggers>
                 <DataTrigger Binding="{Binding Image}" Value="{x:Null}">
                     <Setter Property="Source" Value="Images/Default.png"/>
                 </DataTrigger>
             </Style.Triggers>
         </Style>
    </Image.Style>
</Image>

Why show me this?

Answer 1

Triggers aren’t supported in Windows 8 Metro style apps. I’d suggest you write a converter which will replace null value with the default one.