如何使资源字典中的一种样式基于另一种样式？
我有一个应用于资源字典中所有按钮的主题。现在我想在从字典继承样式更改的同时向按钮添加触发器。我尝试了以下代码，但它说找不到该控件。我该如何解决它？
<UserControl.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Theme.xaml"/>
</ResourceDictionary.MergedDictionaries>
<conv:ErrorContentConverter x:Key="ErrorContentConverter" />
<Style x:Key="ValidTrigger"
TargetType="Control" BasedOn="{StaticResource {x:Type Control}}">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsValid}" Value="False">
<Setter Property="IsEnabled" Value="false" />
</DataTrigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
</UserControl.Resources>
基本模板：
<Style TargetType="{x:Type Button}" BasedOn="{x:Null}">
<Setter Property="FocusVisualStyle"
Value="{DynamicResource NuclearButtonFocusVisual}" />
<Setter Property="Foreground" Value="#FF042271" />
<Setter Property="FontFamily" Value="Trebuchet MS" />
<Setter Property="FontSize" Value="12" />
<Setter Property="Padding" Value="3" />
<Setter Property="Template" Value="{DynamicResource ButtonTemplate}" />
</Style>
I have a theme that is applied to all buttons in a resource dictionary. Now I want to add a trigger to the button while inheriting the style changes from the dictionary. I tried the following code, but it says that the control cannot be found. How can I fix it ?
<UserControl.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Theme.xaml"/>
</ResourceDictionary.MergedDictionaries>
<conv:ErrorContentConverter x:Key="ErrorContentConverter" />
<Style x:Key="ValidTrigger"
TargetType="Control" BasedOn="{StaticResource {x:Type Control}}">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsValid}" Value="False">
<Setter Property="IsEnabled" Value="false" />
</DataTrigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
</UserControl.Resources>
The base template:
<Style TargetType="{x:Type Button}" BasedOn="{x:Null}">
<Setter Property="FocusVisualStyle"
Value="{DynamicResource NuclearButtonFocusVisual}" />
<Setter Property="Foreground" Value="#FF042271" />
<Setter Property="FontFamily" Value="Trebuchet MS" />
<Setter Property="FontSize" Value="12" />
<Setter Property="Padding" Value="3" />
<Setter Property="Template" Value="{DynamicResource ButtonTemplate}" />
</Style>
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（3）
我过去使用过的一个技巧：在为应用程序定义总括样式的
ResourceDictionary中，将x:Key添加到您想要继承的样式，如下所示：将此样式应用于指定类型的所有控件（本例中为
Button），而无需显式设置每个Button< 的Style属性/code>，添加另一个BasedOn样式，但没有键：使用此方法，应用程序中的所有
Button将自动继承您的自定义样式，但您仍然可以BasedOnButtonStyle条目创建其他样式，并避免破坏所有自定义样式。One trick I've used in the past: in your
ResourceDictionarythat defines blanket styles for your application, add anx:Keyto the style you'd like to inherit from, like so:To apply this style to all controls of the specified type (
Buttonin this example) without having to explicitly set theStyleattribute of everyButton, add another style that'sBasedOnthis style, but doesn't have a key:Using this method, all
Buttons in your application will automatically inherit your custom style, but you can still create additional stylesBasedOntheButtonStyleentry and avoid blowing away all of your custom styling.为您的基本样式命名，例如 FooStyle。
在您提供的示例中，将 TargetType 和 BasedOn 修改为如下所示：
Give your base Style a name, say FooStyle.
In the example you gave, modify the TargetType and BasedOn to look as follows:
我认为没有为“控制”定义基本样式，所以你的
BasedOn="{StaticResource {x:Type Control}}"部分找不到任何内容。您可能想更改
为
I think there is no base style defined for "control" so your
BasedOn="{StaticResource {x:Type Control}}"part won't find anything.You probably want to change
to