vs2005聊天室，线程间操作无效: 从不是创建控件“richTextBox1”的线程访问它

[youxia1206]

用vs2005做的socket聊天室，其中button2是发送信息,做的是服务端和客户端能互发信息
服务端代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace Server
{

public partial class Form1 : Form
{
private IPEndPoint MyServer;
private Socket sock;
private bool bb = true;
private Socket aaa;
public Form1()
{
InitializeComponent();
}
private void targett()
{
if (aaa.Connected)
{
toolStripStatusLabel1.Text = "与客户建立连接。";
while (bb)
{
Byte[] bbb = new Byte[64];
aaa.Receive(bbb, bbb.Length, 0);
string ccc = System.Text.Encoding.BigEndianUnicode.GetString(bbb);
richTextBox1.AppendText(ccc + "\r\n");

}
}
}
private void button2_Click(object sender, EventArgs e)
{
try
{
Byte[] bytee = new Byte[64];
string send = richTextBox2.Text + "\r\n";
bytee = System.Text.Encoding.BigEndianUnicode.GetBytes(send.
ToCharArray());
aaa.Send(bytee, bytee.Length, 0);
}
catch { MessageBox.Show("连接尚未建立! 无法发送!"); }
}
private void button3_Click(object sender, EventArgs e)
{
try
{
sock.Close();
toolStripStatusLabel1.Text = "监听停止!";
}
catch { MessageBox.Show("监听尚未开始,关闭无效!"); }

}
private void Form1_Load(object sender, EventArgs e)
{
try
{
MyServer = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 999);
sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp);
sock.Bind(MyServer);
sock.Listen(50);
toolStripStatusLabel1.Text = "开始监听 ．．．";
aaa = sock.Accept();
Thread thread = new Thread(new ThreadStart(targett));
thread.Start();
sock.BeginAccept(new AsyncCallback(AcceptCallback), sock);
}
catch (Exception ee) { toolStripStatusLabel1.Text = ee.Message; }

}
private void AcceptCallback(IAsyncResult ar)
{
Socket listener=(Socket)ar.AsyncState;
aaa=listener.EndAccept(ar);
aaa = ((Socket)ar.AsyncState).EndAccept(ar);
Thread thread = new Thread(new ThreadStart(targett));
thread.Start();
}


}
}
客户端：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Net;
using System.Net.Sockets;
namespace Client
{
public partial class Form1 : Form
{
private IPEndPoint MyServer;
private Socket sock;
private bool bb=true;
public Form1()
{
InitializeComponent();
}
private void targett()
{
while (bb)
{
Byte[] bbb = new Byte[640];
sock.Receive(bbb, bbb.Length, 0);
string aaaaa = System.Text.Encoding.BigEndianUnicode.GetString(bbb);
richTextBox1.AppendText(aaaaa);
}
}

private void button2_Click(object sender, EventArgs e)
{
try
{
Byte[] bytee = new Byte[640];
string send = richTextBox2.Text + "\r\n";
bytee = System.Text.Encoding.BigEndianUnicode.GetBytes(send.ToCharArray());
sock.Send(bytee, bytee.Length, 0);
}
catch { MessageBox.Show("连接尚未建立! 无法发送!"); }
}
private void button3_Click(object sender, EventArgs e)
{
try
{
sock.Close();
toolStripStatusLabel1.Text = "断开连接!";
}
catch { MessageBox.Show("连接尚未建立，断开无效!"); }
}
private void Form1_Load(object sender, EventArgs e)
{
try
{
MyServer = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 999);
sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream,
ProtocolType.Tcp);
sock.Connect(MyServer);
toolStripStatusLabel1.Text = "连接成功!";
Thread thread = new Thread(new ThreadStart(targett));
thread.Start();
}
catch (Exception ee){MessageBox.Show(ee.Message);}

}

}
}
程序显示 richTextBox1.AppendText(ccc + "\r\n");错误
网上查查说可以用委托的方法，不知具体怎么解决，请各位朋友帮帮忙，急啊！！

[ztenv]

用到了多线程,只能从创建控件的线程来更新控件

[zgke]

第1个方法 this.Invoke((MethodInvoker)delegate {
richTextBox1.AppendText(ccc + "\r\n"); });


简单的方法
在窗体LOAD里加 Control.CheckForIllegalCrossThreadCalls = false;

[const1234]

你可以把线程设置成为后台线程的，这样就可以对控件进行操作了！

[const1234]

Control.CheckForIllegalCrossThreadCalls = false
加上这一句话，就可以了，还建议你不要用委托，如果你不懂委托还是先不要用。

[youxia1206]

[Quote=引用 2 楼 zgke 的回复:]
第1个方法 this.Invoke((MethodInvoker)delegate {
richTextBox1.AppendText(ccc + "\r\n"); });


简单的方法
在窗体LOAD里加 Control.CheckForIllegalCrossThreadCalls = false;
[/Quote]

this.Invoke((MethodInvoker)delegate {
richTextBox1.AppendText(ccc + "\r\n"); }); 这个写在哪里

[ztenv]

[Quote=引用 5 楼 youxia1206 的回复:]
引用 2 楼 zgke 的回复:
第1个方法 this.Invoke((MethodInvoker)delegate {
richTextBox1.AppendText(ccc + "\r\n"); });


简单的方法
在窗体LOAD里加 Control.CheckForIllegalCrossThreadCalls = false;


this.Invoke((MethodInvoker)delegate {
richTextBox1.AppendText(ccc + "\r\n"); }); 这个写在哪里
[/Quote]

放到你多线程修改界面的方法里

[youxia1206]

用4楼的方法行了，谢谢各位