什么是C＃的CoClass属性呢？ [英] What does the C# CoClass attribute do?

问题描述

我发现的代码像在我们使用第三方库下面。

I found code something like the following in a 3rd party library we're using.

[CoClass(typeof(BlahClass))]
public interface Blah : IBlah
{
}

这是什么做的究竟是什么？ MSDN文档没有照亮主体充分，我搞不懂。

What is this doing exactly? The msdn documentation didn't illuminate the subject sufficiently for me to follow.

推荐答案

据宣布，该接口胡说旨在通过一个特定的类来实现。这意味着，你可以方便说新布拉赫和运行时就知道要创建的对象 - 这通常不太可能与接口。

It declares that the interface Blah is intended to be implemented by a specific class. It means that you can conveniently say new Blah and the runtime will know what object to create - something that is not normally possible with an interface.

如果你看一下BlahClass生成的声明，它将大概有一个的Guid 与之相关的可以是用于创建一个COM对象的实例

If you look at the generated declaration for BlahClass, it will presumably have a Guid associated with it which can be used to create an instance of a COM object.

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