Bind a fill property in a path to a Foreground property from the ContentControl in a style

Question

I have silverlight problem I\'v used two days to fight: a template with a style controls a button. In the concrete button I have a canvas with paths as content. The problem is t

Answer 1

Binding to ContentControl should help (Silverlight 5):

<Button x:Name="Play" Style="{StaticResource PathButtonStyle}" >
    <Canvas x:Name="PlayIcon">
        <Path Data="F1M191.4839,96.1763L177.9149,106.5173L177.9149,85.9293z" 
              Fill="{Binding Foreground, RelativeSource={RelativeSource FindAncestor, AncestorType=ContentControl}}" />
    </Canvas>
</Button>

Answer 2

Actually instead of setting Canvas as Content in Button you can put it in Templete.

      <Style x:Key="PathButtonStyle" TargetType="Button">

    ... Animations and state stuff
     <Canvas x:Name="PlayIcon">
    <Path Data="F1M191.4839,96.1763L177.9149,106.5173L177.9149,85.9293z" 
          Fill="{TemplateBinding Foreground}" />
  </Canvas>
      <Border x:Name="ButtonBackground" BorderBrush="{TemplateBinding BorderBrush}" >
        <ContentControl x:Name="ContentContainer" 
          ContentTemplate="{TemplateBinding ContentTemplate}" 
          Content="{TemplateBinding Content}" 
          Foreground="{TemplateBinding Foreground}" />
      </Border>
    </Style>

you can do anything you want if you'll use this scenario.

Answer 3

Since you gave a name to your button, you can use the Binding ElementName parameter:

<Button x:Name="Play" Style="{StaticResource PathButtonStyle}" >
    <Canvas x:Name="PlayIcon">
        <Path Data="F1M191.4839,96.1763L177.9149,106.5173L177.9149,85.9293z" 
            Fill="{Binding Foreground, ElementName=Play}" />
    </Canvas>
</Button>