我是用個執行緒讓progressbar去不斷的累加,想要用一個button2去暫停他    可是遇到跨執行緒的問題,當我執行suspend的時候他顯示執行緒沒有執行所以無法暫停    請問要如何才能正確的暫停呢??以下是我的程式碼    <textarea class="c#" rows="10" cols="60" name="code"> using System; using System.Threading; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace WindowsApplication1 { public partial class Form1 : Form { public delegate void mydelegate(); ThreadStart mythreadstart1; Thread mythread1; public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { start(); } private void start() { mythreadstart1 = new ThreadStart(ddkbefore); mythread1 = new Thread(mythreadstart1); mythread1.Start(); } private void ddkbefore() { this.Invoke(new mydelegate(ddk)); } private void ddk() { for (int a = 1; a < 99; a ) { progressBar1.Value ; } } private void button2_Click(object sender, EventArgs e) { mythread1.Suspend(); } } } </textarea>

你執行ddk的時機已經不是執行緒的時候了，當你執行完this.Invoke的時候，執行緒就已經結束。

修改了幾個地方：
<textarea class="c#" rows="10" cols="60" name="code">public delegate void mydelegate(int value); private void ddkbefore() { for (int a = 1; a < 99; a ) { Thread.Sleep(1000); this.Invoke(new mydelegate(ddk), new object[] { a }); } } private void ddk(int value) { progressBar1.Value = value; } </textarea>

因為迴圈數太少，你按下暫停之前，程式就先執行完了。