异步方法? [英] asynchronous method ?

问题描述

我有一个关于异步方法的问题.在B类中更改值后如何获得A类中的结果值.

我的代码:

I have a question about an asynchronous method. How to get the result value in class A after the value changed in class B.

My code :

public class A
{

}


public classe B
{
   String result;
   private void OnDataAvailable(object sender, DataAvailableEventArgs e)
        {
            ...
            result = e.Data;
        }


}

想你！
}

Think you !
}

推荐答案

如果您使用的是.Net 3.5或更高版本，则可以将B类设为可观察对象(从IObservable派生)，然后使A类句柄B类的NotifyPropertyChanged事件.

如果您使用的是.Net 3.0或更旧的版本，则可以让A类处理B类的OnDataAvailable事件(或在设置B类数据之后反映该事件的自定义事件).

If you''re using .Net 3.5 or newer, you could make Class B an Observable object (derive from IObservable), and then make Class A handle Class B''s NotifyPropertyChanged event.

If you''re using .Net 3.0 or older, you could have Class A handle Class B''s OnDataAvailable event (or a custom event that reflects it AFTER Class B''s data has been set).

本文 [ ^ ]讨论了各种异步返回模式，对您应该非常有用.

This article[^] discusses various asynchronous return patters and should be very useful to you.

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