XAML中的重用按钮内容

Question

我有我想要在我的Silverlight应用程序中的UserControl上的多个按钮中使用的按钮内容。这里是一个按钮的代码：

<Grid x:Name="LayoutRoot" Background="White"> 

    <Button Grid.Column="1" IsEnabled="{Binding PrivilegeChanged}" Height="24" Width="24"> 
     <Button.Content> 
      <Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
       x:Name="UndoIcon" Width="16" Height="16" Clip="F1 M 0,0L 16,0L 16,16L 0,16L 0,0" UseLayoutRounding="False"> 
       <Canvas x:Name="Arrow_2" Width="16" Height="16" Canvas.Left="0" Canvas.Top="0"> 
        <Path Width="17.0154" Height="17" Canvas.Left="-0.5" Canvas.Top="-0.499999" Stretch="Fill" 
         StrokeLineJoin="Round" Stroke="#FF006432" Fill="#FF00C800" 
         Data="F1 M 12.5819,16C 14.1685,12.7951 14.1052,6.14911 11.0969,4.25C 9.23816,3.07665 6.71915,3.4789 5.40404,5.25L 8.12669,8.25L 0,8.91667L 0,9.53674e-007L 3.17642,3.25C 4.16648,1.91667 5.52584,0.61155 7.13664,0.25C 9.85332,-0.359774 13.4395,0.629333 15.0571,2.91667C 17.402,6.23256 15.0026,12.7401 12.5819,16"/> 
       </Canvas> 
      </Canvas> 
     </Button.Content> 
    </Button> 

</Grid> 

我该如何使Button.Content可重用而不删除按钮轮廓？

Answer 1

最简单的办法是坚持你的按钮设计内容在自己的UserControl ： -

<UserControl x:Class="SilverlightApplication1.MyButton" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > 
    <Canvas Width="16" Height="16" Clip="F1 M 0,0L 16,0L 16,16L 0,16L 0,0" UseLayoutRounding="False"> 
     <Canvas Width="16" Height="16" Canvas.Left="0" Canvas.Top="0"> 
      <Path Width="17.0154" Height="17" Canvas.Left="-0.5" Canvas.Top="-0.499999" Stretch="Fill" 
         StrokeLineJoin="Round" Stroke="#FF006432" Fill="#FF00C800" 
         Data="F1 M 12.5819,16C 14.1685,12.7951 14.1052,6.14911 11.0969,4.25C 9.23816,3.07665 6.71915,3.4789 5.40404,5.25L 8.12669,8.25L 0,8.91667L 0,9.53674e-007L 3.17642,3.25C 4.16648,1.91667 5.52584,0.61155 7.13664,0.25C 9.85332,-0.359774 13.4395,0.629333 15.0571,2.91667C 17.402,6.23256 15.0026,12.7401 12.5819,16"/> 
     </Canvas> 
    </Canvas> 
</UserControl> 

现在您可以创建该用户的多个实例控制哪里你需要这个内容： -

<UserControl x:Class="SilverlightApplication1.Test" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:local="clr-namespace:SilverlightApplication1" 
    Width="400" Height="300"> 
    <Grid x:Name="LayoutRoot" Background="White"> 
     <StackPanel Orientation="Horizontal"> 
      <Button Grid.Column="1" IsEnabled="{Binding PrivilegeChanged}" Height="24" Width="24" Margin="2"> 
       <local:MyButton /> 
      </Button> 
      <Button Grid.Column="1" IsEnabled="{Binding SomethingElseChanged}" Height="24" Width="24" Margin="2"> 
       <local:MyButton /> 
      </Button> 
     </StackPanel> 

    </Grid> 
</UserControl> 

Answer 2

通常情况下，您将创建一个Template，为您的按钮创建自定义布局。更快更直接的解决方案是将内容设置为Style，然后将样式应用于所需的按钮。

定义样式与内容：

<Window.Resources> 
    <Style x:Key="ButtonArrowStyle" TargetType="Button"> 
     <Setter Property="Content"> 
      <Setter.Value> 
       <Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      x:Name="UndoIcon" Width="16" Height="16" Clip="F1 M 0,0L 16,0L 16,16L 0,16L 0,0" UseLayoutRounding="False"> 
        <Canvas x:Name="Arrow_2" Width="16" Height="16" Canvas.Left="0" Canvas.Top="0"> 
         <Path Width="17.0154" Height="17" Canvas.Left="-0.5" Canvas.Top="-0.499999" Stretch="Fill" 
        StrokeLineJoin="Round" Stroke="#FF006432" Fill="#FF00C800" 
        Data="F1 M 12.5819,16C 14.1685,12.7951 14.1052,6.14911 11.0969,4.25C 9.23816,3.07665 6.71915,3.4789 5.40404,5.25L 8.12669,8.25L 0,8.91667L 0,9.53674e-007L 3.17642,3.25C 4.16648,1.91667 5.52584,0.61155 7.13664,0.25C 9.85332,-0.359774 13.4395,0.629333 15.0571,2.91667C 17.402,6.23256 15.0026,12.7401 12.5819,16"/> 
        </Canvas> 
       </Canvas> 
      </Setter.Value> 
     </Setter> 
    </Style> 
</Window.Resources> 

，然后定义按钮使用的样式：

<Button Style="{StaticResource ButtonArrowStyle}"/>