控制'richTextBox1'从c＃创建的线程以外的线程访问c＃ [英] Control 'richTextBox1' accessed from a thread other than the thread it was created on in c#

问题描述

朋友们。我正在从richTextBox

hi friends. i'm retreiving data from the richTextBox

中检索数据。但是我得到了上面的错误。我可以解决这个问题吗

. but i got above error.how can i solve this

推荐答案

将UI处理委托给创建UI对象的线程。这通常是主线程，也就是GUI线程。

Delegate the UI handling to the thread that created the UI object. That is usually the main thread, a.k.a. GUI thread.

// Call this from whatever thread you like.
void SetTextBoxText(RichTextBox box, string text)
{
    // Accessing a GUI object from another thread than GUI is not permitted
    //   There are three exceptions to that: InvokeRequired, BeginInvoke, Invoke
    if (box.InvokeRequired)
    // Called from another thread than GUI thread.
    //   Delegate work to GUI thread and exit.
    {
        box.Invoke(new Action<string>(SetTextBoxText), new object[] { box, text });
        return;
    }
    // We're in GUI thread now. Accessing the GUI object is safe.
    box.Text = text;
}

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