重寫按鈕與控件模板不顯示內容

Question

我是一個XAML新手，看着這個博客

http://jeremybytes.blogspot.com/2009/03/wpf-xaml-sample.html

他提到「請注意，他們沒有任何內容（Button1a，Button1b，等等），這是因爲我們的模板不包含內容元素。「我正在考慮如何確保在應用新按鈕模板之後內容仍然保留。這裏是XAML

<Page.Resources> 
    <ControlTemplate TargetType="Button" x:Key="targetButton"> 
     <Canvas Width="100" Height="100" Name="mainCanvas"> 
      <Rectangle Height="100" Width="100" Fill="Aqua" Canvas.Top="1"/>  
     </Canvas> 
    </ControlTemplate>   
    <Style TargetType="Button"> 
     <Setter Property="Margin" Value="5, 5, 5, 5"/>    
     <Setter Property="Template" Value="{StaticResource targetButton}"/> 
    </Style> 
</Page.Resources> 
<StackPanel DataContext="{Binding Board}"> 
    <StackPanel Orientation="Horizontal"> 
     <Button Name="testButton1a" Click="testButton1a_Click" Content="testButton1a"/> 
     <Button Name="testButton1b" Click="testButton1a_Click" Content="testButton1b"/> 
     <Button Name="testButton1c" Click="testButton1a_Click" Content="testButton1c"/> 
    </StackPanel> 
    <StackPanel Orientation="Horizontal"> 
     <Button x:Name="testButton2a" Click="testButton1a_Click" Content="testButton2a"/> 
     <Button x:Name="testButton2b" Click="testButton1a_Click" Content="testButton2b"/> 
     <Button x:Name="testButton2c" Click="testButton1a_Click" Content="testButton2c"/> 
    </StackPanel> 
    <StackPanel Orientation="Horizontal"> 
     <Button Name="testButton3a" Click="testButton1a_Click" Content="testButton3a"/> 
     <Button Name="testButton3b" Click="testButton1a_Click" Content="testButton3b"/> 
     <Button Name="testButton3c" Click="testButton1a_Click" Content="testButton3c"/> 
    </StackPanel> 
</StackPanel> 

我試圖在模板中添加TextBlock的，但我看到所有的按鈕覆蓋在同一文本塊。我只想渲染矩形按鈕矩陣上顯示的testButton *內容，這樣我就可以更改一次點擊的內容。

謝謝，任何幫助將不勝感激

Answer 1

可以使用ContentPresenter顯示的內容：

<ControlTemplate TargetType="Button" x:Key="targetButton"> 
    <Canvas Width="100" Height="100" Name="mainCanvas"> 
     <Rectangle Height="100" Width="100" Fill="Aqua" Canvas.Top="1"/> 
     <ContentPresenter/> 
    </Canvas> 
</ControlTemplate>