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【CSharp】控制停止，暂停，继续

作者:Dezai.CN / 发布于2012/10/31/ 453

按钮事件中有循环，用另一个按钮控制停止，暂停，继续程序执行

<div>首先在窗体上有  
lable1,//运行显示 
button1,//开始 
button2,//暂停和继续 
button3//停止  
窗体上还放Timer控件timer1 

代码实现如下， 

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)//执行的部分 
 { 
  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 == "开始") 
 {  
 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 == "暂停") 
 {  
 timer1.Enabled = false;  
 state = RunState.pause;  

 this.button2.Text = "继续";  
 } 
 else 
 {  
 timer1.Enabled = true; 
  this.state = RunState.running; 
 this.button2.Text =  "暂停"; 
 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 = "开始";  
 this.button1.Enabled = true; 
  this.button2.Text = "暂停"; 
 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; 
 } 
 } 
}

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