Question

有一个边框，我想同时更改它的边框颜色和背景颜色。所以，我定义了一个风格

<Style x:Key="EoE" TargetType="{x:Type Border}">
<Setter Property="BorderBrush" Value="{StaticResource LightGreen}"/>
<Setter Property="Background">
    <Setter.Value>
        <SolidColorBrush Color="{Binding Path=BorderBrush }"  Opacity="1"/> 
    </Setter.Value>
</Setter>
<Setter Property="Effect">
    <Setter.Value>
        <DropShadowEffect ShadowDepth="0" Color="White"  Opacity="0.5" BlurRadius="10"/>
        <!--<BlurEffect Radius="3" RenderingBias="Quality"/>-->
    </Setter.Value>
</Setter>
<Setter Property="BorderThickness" Value="2"></Setter>

我想在运行时更改的是borderbrush，然后我想要同时更改背景solidcolorbrush。

Answer 1

与RelativeSource Self：

进行绑定

<Setter Property="Background" 
        Value="{Binding Path=BorderBrush, RelativeSource={RelativeSource Self}"/>

Answer 2

如果你真的想为边框的Opacity属性定义另一个带有Background的另一个画笔，你可以试试这个：

<Style x:Key="EoE" TargetType="{x:Type Border}">
    <Style.Resources>
        <SolidColorBrush x:Key="bgBrush" Color="{Binding Path=BorderBrush.(SolidColorBrush.Color), RelativeSource={RelativeSource AncestorType=Border}}" Opacity="0.7"/>
    </Style.Resources>
    <Setter Property="BorderBrush" Value="{StaticResource LightGreen}"/>
    <Setter Property="Background" Value="{StaticResource bgBrush}" />
    <Setter Property="Effect">
        <Setter.Value>
            <DropShadowEffect ShadowDepth="0" Color="White"  Opacity="0.5" BlurRadius="10"/>
        </Setter.Value>
    </Setter>
    <Setter Property="BorderThickness" Value="2"></Setter>
</Style>

如果您只想将Background设置为与BorderBrush完全相同的笔刷，则可以使用@ASh提供的解决方案：

<Style x:Key="EoE" TargetType="{x:Type Border}">
    <Setter Property="BorderBrush" Value="{StaticResource LightGreen}"/>
    <Setter Property="Background"  Value="{Binding Path=BorderBrush, RelativeSource={RelativeSource Self}}"/>
    <Setter Property="Effect">
        <Setter.Value>
            <DropShadowEffect ShadowDepth="0" Color="White"  Opacity="0.5" BlurRadius="10"/>
        </Setter.Value>
    </Setter>
    <Setter Property="BorderThickness" Value="2"></Setter>
</Style>

wpf样式，如何将border的borderbrush引用到background

2 个答案: