有没有办法在 WPF 中使用数据模板继承? [英] Is there a way to use data-template inheritance in WPF?

问题描述

是否可以具有 DataTemplate 组合或继承(类似于样式中的BasedOn")?有 2 个实例是我需要的.

Is it possible to have DataTemplate composition or inheritance (similar to "BasedOn" in Styles)? There are 2 instances where I need that.

1. 对于继承类:我有一个包含多个继承类的基类.我不想在每个派生类的 DataTemplate 中复制基类模板.

不同的视图:对于同一个类，我想定义一个数据模板，然后根据需要添加到该模板中.前任.基本模板将显示对象中的数据，然后我想要可以对对象执行不同操作的不同模板，同时显示数据(继承基本模板).

Different Views: for the same class I want to define a datatemplate, and then add to that template as appropriate. Ex. the base template will display the data in the object and then i want different templates that can perform different actions on the object, while displaying the data (inheriting the base template).

推荐答案

我发现针对此类事情所做的唯一事情是:

The only thing that I have found do to for this kind of thing is this:

<DataTemplate x:Key="BaseClass">
  <!-- base class template here -->
</DataTemplate>
<DataTemplate DataType="{x:Type app:BaseClass}">
  <ContentPresenter Content="{Binding}" 
                    ContentTemplate="{StaticResource BaseClass}"/>
</DataTemplate>
<DataTemplate DataType="{x:Type app:DerivedClass}">
  <StackPanel>
    <ContentPresenter Content="{Binding}" 
                      ContentTemplate="{StaticResource BaseClass}"/>
    <!-- derived class extra template here -->
  </StackPanel>
</DataTemplate>

基本上这会创建一个可以使用键(在本例中为 BaseClass)引用的通用"模板.然后我们为基类和任何派生类定义真正的 DataTemplate.然后派生类模板会添加它自己的东西".

Basically this creates a "common" template that can be referenced using a key (BaseClass in this case). Then we define the real DataTemplate for the base class, and any derived classes. The derived class template would then add it's own "stuff".

在 msdn 不久前，但没有人想出我看到的更好的解决方案.

There was some discussion about this on msdn a while back, but no one came up with a better solution that I saw.

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