WPF数据绑定接口，而不是实际的对象 - 铸造可能吗？ [英] WPF databinding to interface and not actual object - casting possible?

问题描述

说我有一个这样的接口：

Say I have an interface like this:

public interface ISomeInterface
{
...
}

我也有一对夫妇实现此接口的类;

I also have a couple of classes implementing this interface;

public class SomeClass : ISomeInterface
{
...
}

现在我有一个WPF列表框列出ISomeInterface的项目，使用自定义的DataTemplate。

Now I have a WPF ListBox listing items of ISomeInterface, using a custom DataTemplate.

数据绑定引擎将显然不是（我已经能够计算出）让我绑定到接口的属性 - 它看到的对象是一个SomeClass的对象，数据只显示了，如果SomeClass的应该正好有绑定可利用作为非界面属性。

The databinding engine will apparently not (that I have been able to figure out) allow me to bind to interface properties - it sees that the object is a SomeClass object, and data only shows up if SomeClass should happen to have the bound property available as a non-interface property.

我怎么能告诉DataTemplate中充当如果每一个对象是一个ISomeInterface，而不是一个SomeClass的等等？

How can I tell the DataTemplate to act as if every object is an ISomeInterface, and not a SomeClass etc.?

谢谢！

推荐答案

为了绑定到明确实现的接口成员，所有你需要做的就是用括号。例如：

In order to bind to explicit implemented interface members, all you need to do is to use the parentheses. For example:

隐：

{Binding Path=MyValue}

明确的：

{Binding Path=(mynamespacealias:IMyInterface.MyValue)}

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