我正在创建一个基本样式。我正在使用继承来实现我的基本样式。我知道如何在派生类上添加属性,但不知道如何只更改属性。让我给你举个例子:
假设我有这种基本风格:
<!-- SrollViewer ScrollBar Repeat Buttons (at each end) -->
<Style x:Key="ScrollBarLineButton" TargetType="{x:Type RepeatButton}">
<Setter Property="SnapsToDevicePixels" Value="True"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Focusable" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Border
Name="Border"
Margin="1"
CornerRadius="2"
Background="WhiteSmoke"
BorderThickness="1">
<Image Stretch="Uniform" Source="/FilesPro;component/Images/scrollArrow.png" Height="40" VerticalAlignment="Center" HorizontalAlignment="Center" Width="52" >
<Image.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleY="-1" />
<TranslateTransform Y="40"/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Image.RenderTransform>
</Image>
<!--
<Path
HorizontalAlignment="Center"
VerticalAlignment="Center"
Fill="{StaticResource GlyphBrush}"
Data="{Binding Path=Content,
RelativeSource={RelativeSource TemplatedParent}}" >
</Path>
-->
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
我想创建一个新样式,它与ScrollBarLineButton具有相同的属性,但图像从scale=1而不是-1转换。
当我这样做时:
<Style x:Key="ScrollBarLineButtonVerticalUp" BasedOn="{StaticResource ScrollBarLineButton}" TargetType="{x:Type RepeatButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Border>
<Image Stretch="Uniform" Source="/FilesPro;component/Images/scrollArrow.png" Height="40" VerticalAlignment="Center" HorizontalAlignment="Center" Width="52" >
<Image.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleY="1" />
....
...
border不再有它的基本样式边距、背景颜色等。我怎么能继承样式,只更改一个属性呢。我知道我可以复制粘贴,但我会改变很多,如果我在一个地方改变它,它在所有其他地方都会改变,这很方便。
您可以创建一个DynamicResource
引用来执行类似的操作,下面是一个示例:
<StackPanel>
<StackPanel.Resources>
<Style x:Key="ButtonStyleA" TargetType="{x:Type Button}">
<Style.Resources>
<SolidColorBrush x:Key="TextBrush" Color="Yellow" />
</Style.Resources>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border CornerRadius="10" BorderThickness="1" BorderBrush="Red">
<ContentPresenter TextElement.Foreground="{DynamicResource TextBrush}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ButtonStyleB" TargetType="{x:Type Button}" BasedOn="{StaticResource ButtonStyleA}">
<Style.Resources>
<SolidColorBrush x:Key="TextBrush" Color="Blue" />
</Style.Resources>
</Style>
</StackPanel.Resources>
<Button Style="{StaticResource ButtonStyleA}" Content="Lorem Ipsum" />
<Button Style="{StaticResource ButtonStyleB}" Content="Lorem Ipsum" />
</StackPanel>
在StyleB
中,TextBrush
被覆盖,这会导致模板也发生更改,因为它引用了此资源。