如何从不同的线程访问控件? [英] How to access a Control from a different Thread?

问题描述

如何从创建控件的线程以外的线程访问控件，避免跨线程错误?

How can I access a control from a thread other than the thread it was created on, avoiding the cross-thread error?

这是我的示例代码:

private void Form1_Load(object sender, EventArgs e)
{
    Thread t = new Thread(foo);
    t.Start();
}

private  void foo()
{
    this.Text = "Test";
}

推荐答案

有一个众所周知的小模式，它看起来像这样:

There's a well known little pattern for this and it looks like this:

public void SetText(string text) 
{
    if (this.InvokeRequired) 
    {
        this.Invoke(new Action<string>(SetText), text);
    }
    else 
    { 
        this.Text = text;
    }
}

还有一个快速的脏修复，我不建议使用它来测试它.

And there's also the quick dirty fix which I don't recommend using other than to test it.

Form.CheckForIllegalCrossThreadCalls = false;

这篇关于如何从不同的线程访问控件?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！