的DataTemplates和泛型类型 [英] DataTemplates and generic types

问题描述

我有一个泛型类

  public abstract class BaseViewModel< T> 
  

由于我试图创建一个DataTemplate，将应用于从BaseViewModel派生的所有类，将类型设置为BaseViewModel：

 < DataTemplate DataType ={x：Type vm：BaseViewModel}> 
  

但是，这不工作，因为看起来xaml不支持通用数据类型。

解决方案

我会创建一个non BaseViewModel 的通用版本，并让通用类继承自它：

  public abstract class BaseViewModel 
 {
 //不是特定于T的成员（如果有的话）
 //（不是必需的但可以证明有用）
} 
 
 public abstract class BaseViewModel< T> ：BaseViewModel 
 {
 // T特定成员
} 
  

通过这样做，你的 DataTemplate 将工作。

I have a generic class

public abstract class BaseViewModel<T>

Since I am trying to create a DataTemplate that will be applied to all classes that derive from BaseViewModel, I set the type to BaseViewModel:

<DataTemplate DataType="{x:Type vm:BaseViewModel}">

However, this does not work since it looks like xaml does not support generic data types.

Are there any work arounds to this?

解决方案

I would create a non-generic version of BaseViewModel and let the generic one inherit from it:

public abstract class BaseViewModel
{
    // members that are not T-specific, if any
    // (not required, but could prove useful)
}

public abstract class BaseViewModel<T> : BaseViewModel
{
    // T-specific members
}

By doing this, your DataTemplate is going to work.

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