首先在窗體上有
lable1,//執行顯示
button1,//開始
button2,//暫停和繼續
button3//停止
窗體上還放Timer控制元件timer1

程式碼實現如下，

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace testMain { public partial class Form1 : Form { public enum RunState { running, pause, stop } private int i = 0; RunState state = RunState.stop; public Form1() { InitializeComponent(); } private void RunProc(object sender,EventArgs e)//執行的部分 { timer1.Enabled = false; if (state == RunState.running) { label1.Refresh(); label1.Text = ""; label1.Text = i.ToString(); label1.Refresh(); i++; timer1.Enabled = true; } } private void button1_Click(object sender, EventArgs e) { if (this.button1.Text == "開始") { this.button1.Enabled = false; this.button2.Enabled = true; this.button3.Enabled = true; timer1.Tick += new EventHandler(RunProc); timer1.Enabled = true; this.state = RunState.running; } } private void button2_Click(object sender, EventArgs e) { if (this.button2.Text == "暫停") { timer1.Enabled = false; state = RunState.pause; this.button2.Text = "繼續"; } else { timer1.Enabled = true; this.state = RunState.running; this.button2.Text = "暫停"; this.button2.Enabled = true; //timer1.Start(); } } private void button3_Click(object sender, EventArgs e) { this.timer1.Enabled = false; this.i = 0; this.label1.Text = "0"; this.state = RunState.stop; this.button1.Text = "開始"; this.button1.Enabled = true; this.button2.Text = "暫停"; this.button2.Enabled = false; this.button3.Enabled=false; } private void Form1_Load(object sender, EventArgs e) { this.label1.Text = "0"; this.button2.Enabled = false; this.button3.Enabled = false; } } }