C＃实现匿名接口（或抽象类） [英] C# anonymously implement interface (or abstract class)

问题描述

在Java中，可以用，你可以在飞行中实现一个匿名类扩展接口。例如：

In Java it is possible to extend an interface with an anonymous class that you can implement on the fly. Example:

Runnable myRunnable = new Runnable()
{
    @Override
    public void run() { /**/ }
}

（更多关于：的 http://www.techartifact.com/blogs/2009/08/anonymous-classes -in-java.html＃ixzz1k07mVIeO ）

这是可能的 C＃？如果没有，什么都不必依赖于子类实现了过多可行的替代品？

Is this possible in C#? If not, what are viable alternatives without having to rely on implementing a plethora of subclasses?

推荐答案

没有，你不能做在C＃ - 但一般的替代设计方法是使用一个委托来代替。在这个例子中，你已经给了，的Runnable 使用的ThreadStart 通常代表，您可以使用匿名方法或lambda表情：

No, you can't do that in C# - but typically the alternative design approach is to use a delegate instead. In the example you've given, Runnable is usually represented using ThreadStart, and you can use an anonymous method or lambda expression:

ThreadStart start = () =>
{
    // Do stuff here
};

或者，如果你只需要运行，用正确的签名的方法，你可以使用的方法组。转换：

Or if you just have a method to run, with the right signature, you can use a method group conversion:

ThreadStart start = MethodToRunInThread;

或者在发构造函数调用：

Thread t = new Thread(MethodToRunInThread);
t.Start();

如果您的真正的需要实现一个接口，你就必须真正实现它（可能在私人嵌套类）。然而，这并没有拿出非常经常在C＃中，在我的经验 - 通常C＃接口是这自然需要一个真正的实施反正那种，即便在Java中

If you really need to implement an interface, you'll have to really implement it (possibly in a private nested class). However, that doesn't come up terribly often in C#, in my experience - normally C# interfaces are the kind which would naturally demand a "real" implementation anyway, even in Java.

这篇关于C＃实现匿名接口（或抽象类）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！