線程無法獲得訪問RichTextBox.Lines

Question

Thread main; 

    public void bomb() 
    { 
     string link = textBox1.Text; 


     for (int i = 0; i <= richTextBox1.Lines.Length; i++) 
     { 
      HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://" + link + "/"); 
      WebProxy myproxy = new WebProxy(this.richTextBox1.Lines[i], false); 
      //request.Proxy = myproxy; 
      request.Method = "GET"; 
      HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 
      label1.Invoke((MethodInvoker)delegate { label1.Text = i.ToString(); }); 
     } 


    } 

    private void button1_Click(object sender, EventArgs e) 
    { 

     main = new Thread(bomb); 
     main.Start(); 

    } 

但行： richTextBox1.Lines.Length 和 richTextBox1.Lines [I]

生成錯誤：

Cross-thread operation not valid: Control 'richTextBox1' accessed from a thread other than >the thread it was created on.

如果我想從richtextbox中獲取文本都可以，但是如果我想要獲取線條，我會收到錯誤消息。

謝謝。

Answer 1

使用Invoke訪問richTextBox1.Lines如同你label1

var lines = (string[])richTextBox1.Invoke(
          (Func<string[]>)(() => this.richTextBox1.Lines)); 

同樣如此也textBox1