程式碼示例：

public partial class Form1 : Form

{

private delegate void FlushClient();//代理

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

Thread thread = new Thread(CrossThreadFlush);

thread.IsBackground=true;

thread.Start();

}

private void CrossThreadFlush()

{

//將代理繫結到方法

FlushClient fc = new FlushClient(ThreadFuntion);

this.BeginInvoke(fc);//呼叫代理

}

private void ThreadFuntion()

{

while (true)

{

this.textBox1.Text = DateTime.Now.ToString();

Thread.Sleep(1000);

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Threading;

namespace WindowsFormsApplication4

{

public partial class Form1 : Form

{

private delegate void FlushClient(); //代理

Thread thread = null;

int counter = 0;

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

this.listBox1.Items.Clear();

button1.Enabled = false;

thread = new Thread(CrossThreadFlush);

thread.IsBackground = true;

thread.Start();

}

private void button2_Click(object sender, EventArgs e)

{

thread.Suspend();

button1.Enabled = true;

}

private void CrossThreadFlush()

{

while (true)

{

//將sleep和無限迴圈放在等待非同步的外面

Thread.Sleep(1000);

ThreadFunction();

}

}

private void ThreadFunction()

{

if (this.listBox1.InvokeRequired)//等待非同步

{

FlushClient fc = new FlushClient(ThreadFunction);

this.Invoke(fc); //透過代理呼叫重新整理方法

}

else

{

counter += 1;

this.label1.Text = counter.ToString();

this.listBox1.Items.Add(System.DateTime.Now.ToString());

}

}

}

}