将样式应用于派生自特定基数的控件 class

Question

如何将样式应用于基于特定 CustomControl 的所有子项。

例子

自定义控件

public class SubView : UserControl
{ ... }

基于自定义控件的控件

public partial class MyView : SubView
{ ... }

XAML 为 MyView

<myLibrary:SubView
    xmlns:myLibrary="....">

<Grid>
    <!--Any content-->
</Grid>
</moduleChrome:SubView>

父级（此网格的子级是从代码运行时设置的）

<Grid>
    <Grid.Resources>
        <Style TargetType="myLibrary:SubView">
            <Setter Property="MyCustomDependancy" Value="{binding to a shared MyCustomDependancy}"/>
        </Style>
    </Grid.Resources>

    <myLibrary:SubView/>   <!--This will have the shared MyCustomDependancy-->
    <localFolder:MyView/>    <!--But this will not be affected-->
</Grid>

如何让MyView受样式影响？

编辑

这段代码的起源是动态的并且相当复杂，但我试图让这个问题尽可能通用，以便尽可能多的人可以通过可能的解决方案得到帮助，但我想我把它做得太通用了。这些答案可能对我没有帮助，但我希望其他人会。

Answer 1

样式仅适用于特定 class，它们不会被继承。不过，您可以这样做：

<Style TargetType="{x:Type myLibrary:SubView}">
    <Setter Property="Opacity" Value="0.5"/>
</Style>
<Style TargetType="{x:Type localFolder:MyView}" BasedOn="{StaticResource {x:Type myLibrary:SubView}} />

Answer 2

如果 SubView 确实是一个自定义控件而不是 UserControl 并且具有在 Themes/Generic.xaml 中定义的默认模板，这实际上将按预期工作。

您可以使用以下示例代码自行确认。

Themes/Generic.xaml:

<Style TargetType="local:SubView">
    <Setter Property="Opacity"  Value="0.5" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:SubView}">
                <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
                    <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

控件：

public class SubView : ContentControl
{
    static SubView()
    {
        DefaultStyleKeyProperty.OverrideMetadata(typeof(SubView),
            new FrameworkPropertyMetadata(typeof(SubView)));
    }
}

public class MyView : SubView
{

}

用法：

<local:SubView>
    <local:SubView.Content>
        <TextBlock>content 1</TextBlock>
    </local:SubView.Content>
</local:SubView>
<local:MyView>
    <local:SubView.Content>
        <TextBlock>content 2</TextBlock>
    </local:SubView.Content>
</local:MyView>

来自 MSDN："If you do need to create a new control, the simplest way is to create a class that derives from UserControl. Before you do so, consider that your control will not support templates and therefore will not support complex customization."

https://msdn.microsoft.com/en-us/library/system.windows.controls.usercontrol(v=vs.110).aspx

将样式应用于派生自特定基数的控件 class

Apply Style to controls that derives from a certain base class

c#

wpf

xaml

custom-controls