c# - 在按钮模板上设置 CornerRadius

Question

我想要一个没有定义 CornerRadius 的按钮和另外两个定义了的按钮，我该如何实现？

<Style TargetType="Button" x:Key="TabButton">
    <Setter Property="Background" Value="White" />
    <Setter Property="TextBlock.TextAlignment" Value="Center" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Button">
                <Border CornerRadius="0" Background="White" BorderBrush="#ccc" BorderThickness="0,1,1,0" >
                    <ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style TargetType="Button" x:Key="TabButtonFirst" BasedOn="{StaticResource TabButton}">
    <Setter Property="CornerRadius" Value="3,0,0,0" />
</Style>

<Style TargetType="Button" x:Key="TabButtonLast" BasedOn="{StaticResource TabButton}">
    <Setter Property="CornerRadius" Value="0,0,0,3" />
</Style>

Answer 1

您不限于您正在模板化的控件的依赖属性。在这种情况下，虽然 Button 没有 CornerRadius 属性，但 Border 有，因此您可以使用 Border.CornerRadius 相反:

<Style TargetType="Button" x:Key="TabButton">
    <Setter Property="Background" Value="White" />
    <Setter Property="TextBlock.TextAlignment" Value="Center" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Button">
                <Border CornerRadius="{TemplateBinding Border.CornerRadius}" 
                        Background="White" BorderBrush="#ccc" 
                        BorderThickness="0,1,1,0" >
                    <ContentPresenter x:Name="contentPresenter" 
                                      ContentTemplate="{TemplateBinding ContentTemplate}" 
                                      Content="{TemplateBinding Content}" 
                                      HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                      Margin="{TemplateBinding Padding}" 
                                      VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style TargetType="Button" x:Key="TabButtonFirst" BasedOn="{StaticResource TabButton}">
    <Setter Property="Border.CornerRadius" Value="3,0,0,0" />
</Style>

<Style TargetType="Button" x:Key="TabButtonLast" BasedOn="{StaticResource TabButton}">
    <Setter Property="Border.CornerRadius" Value="0,0,0,3" />
</Style>

使用这种方法，您不再需要维护控件模板的多个副本。