Question

I can’t figure out why this XAML code does not work. When using a TemplateBinding (see below), the background color is not set. But when I use a normal color string (i.e. ‘Red’), it works fine.

<ControlTemplate x:Key='InstanceButtonTemplate' TargetType='{x:Type Control}'>     <Grid>         <Rectangle>             <Rectangle.Fill>                 <SolidColorBrush Color='{TemplateBinding Background}'></SolidColorBrush>             </Rectangle.Fill>         </Rectangle>     </Grid> </ControlTemplate> 

Yet, when I use a TemplateBinding in this way, it works Fine…

<ControlTemplate x:Key='InstanceButtonTemplate' TargetType='{x:Type Control}'>     <Grid>         <Rectangle Fill='{TemplateBinding Background}'></Rectangle>     </Grid> </ControlTemplate> 

Any ideas?

Edit: to clarify, I intend to expand this to rather use a gradient brush, that’s why I need to be able to assign to the Rectangle.Fill property using XAML instead of a plain string.

Answer 1

That is because Color has a different type then Background

Background is a Brush, Color is a.. well Color.. You can use a IValueConverter to convert your brush to a color..

HTH