C＃跨线程操作错误 [英] C# cross thread operation error

问题描述

在用于模拟局域网信使C＃程序，我对beginreceive一个回调函数，我需要显示在一个特定的文本框.. $ B $收到b this.textBox1.Text = sb.ToString（）的文本;
然而在这样做，我得到一个跨线程操作无效错误。
我也知道我需要使用object.invoke方法，但可以ü请您提供完整的代码来调用一个委托，因为我还是幼稚的，当涉及到threading.Thank你

In a c# program for simulating a lan messenger, i have a callback function for beginreceive where i need to display the text received in a particular textbox.. this.textBox1.Text = sb.ToString(); However on doing so, I am getting a cross-thread operation not valid error. I do realize that i need to use the object.invoke method but could u please provide me with the complete code to invoke a delegate because am still naive when it comes to threading.Thank you

推荐答案

您需要按工作放回UI;幸运的是，它很容易：

You need to push the work back onto the UI; luckily, it is easy:

this.Invoke((MethodInvoker) delegate {
    this.textBox1.Text = sb.ToString();
});

这使用匿名方法和俘获变量的C＃的特征来完成所有的繁重。在.NET 3.5中，你可能更愿意使用动作，但是这使得没有真正的区别：

This uses the "anonymous method" and "captured variables" features of C# to do all the heavy lifting. In .NET 3.5, you may prefer to use Action, but that makes no real difference:

this.Invoke((Action) delegate {
    this.textBox1.Text = sb.ToString();
});

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