namespace  ThreadExample

{

    partial  class  ThreadExample

    {

         /**/ ///   <summary>

         ///  Required designer variable.

         ///   </summary>

         private  System.ComponentModel.IContainer components  =   null ;

         /**/ ///   <summary>

         ///  Clean up any resources being used.

         ///   </summary>

         ///   <param name="disposing"> true if managed resources should be disposed; otherwise, false. </param>

         protected   override   void  Dispose( bool  disposing)

        {

             if  (disposing  &&  (components  !=   null ))

            {

                components.Dispose();

            }

             base .Dispose(disposing);

        }

        Windows Form Designer generated code #region  Windows Form Designer generated code

         /**/ ///   <summary>

         ///  Required method for Designer support - do not modify

         ///  the contents of this method with the code editor.

         ///   </summary>

         private   void  InitializeComponent()

        {

             this .btnStart  =   new  System.Windows.Forms.Button();

             this .btnStop  =   new  System.Windows.Forms.Button();

             this .button1  =   new  System.Windows.Forms.Button();

             this .textBox1  =   new  System.Windows.Forms.TextBox();

             this .lblResult  =   new  System.Windows.Forms.Label();

             this .SuspendLayout();

             //  

             //  btnStart

             //  

             this .btnStart.Location  =   new  System.Drawing.Point( 14 ,  38 );

             this .btnStart.Name  =   " btnStart " ;

             this .btnStart.Size  =   new  System.Drawing.Size( 75 ,  23 );

             this .btnStart.TabIndex  =   0 ;

             this .btnStart.Text  =   " 启动 " ;

             this .btnStart.Click  +=   new  System.EventHandler( this .btnStart_Click);

             //  

             //  btnStop

             //  

             this .btnStop.Location  =   new  System.Drawing.Point( 14 ,  68 );

             this .btnStop.Name  =   " btnStop " ;

             this .btnStop.Size  =   new  System.Drawing.Size( 75 ,  23 );

             this .btnStop.TabIndex  =   1 ;

             this .btnStop.Text  =   " 停止 " ;

             this .btnStop.Click  +=   new  System.EventHandler( this .btnStop_Click);

             //  

             //  button1

             //  

             this .button1.Location  =   new  System.Drawing.Point( 14 ,  97 );

             this .button1.Name  =   " button1 " ;

             this .button1.Size  =   new  System.Drawing.Size( 75 ,  23 );

             this .button1.TabIndex  =   3 ;

             this .button1.Text  =   " 关闭 " ;

             this .button1.Click  +=   new  System.EventHandler( this .button1_Click);

             //  

             //  textBox1

             //  

             this .textBox1.Location  =   new  System.Drawing.Point( 14 ,  11 );

             this .textBox1.Name  =   " textBox1 " ;

             this .textBox1.Size  =   new  System.Drawing.Size( 75 ,  21 );

             this .textBox1.TabIndex  =   4 ;

             this .textBox1.Text  =   " 200 " ;

             //  

             //  lblResult

             //  

             this .lblResult.AutoSize  =   true ;

             this .lblResult.Location  =   new  System.Drawing.Point( 12 ,  139 );

             this .lblResult.Name  =   " lblResult " ;

             this .lblResult.Size  =   new  System.Drawing.Size( 23 ,  12 );

             this .lblResult.TabIndex  =   5 ;

             this .lblResult.Text  =   " 0/0 " ;

             //  

             //  ThreadExample

             //  

             this .AutoScaleDimensions  =   new  System.Drawing.SizeF(6F, 12F);

             this .AutoScaleMode  =  System.Windows.Forms.AutoScaleMode.Font;

             this .ClientSize  =   new  System.Drawing.Size( 104 ,  164 );

             this .Controls.Add( this .lblResult);

             this .Controls.Add( this .textBox1);

             this .Controls.Add( this .button1);

             this .Controls.Add( this .btnStop);

             this .Controls.Add( this .btnStart);

             this .Name  =   " ThreadExample " ;

             this .Text  =   " Form1 " ;

             this .ResumeLayout( false );

             this .PerformLayout();

        }

         #endregion

         private  System.Windows.Forms.Button btnStart;

         private  System.Windows.Forms.Button btnStop;

         private  System.Windows.Forms.Button button1;

         private  System.Windows.Forms.TextBox textBox1;

         private  System.Windows.Forms.Label lblResult;

    }

}

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;

namespace  ThreadExample

{

     public  partial  class  ThreadExample : Form

    {

         // 声明一个线程

         private  Thread timerThread;

         // 声明一个变量,用来存储label值

         int  count, i  =   0 ;

         public  ThreadExample()

        {

            InitializeComponent();

        }

         // 把label的值加1;

         public   void  AddData()

        {

             // 显示lable的值

             if  (i  ==  count)

                i  =   0 ;

             this .lblResult.Text  =  i.ToString()  +   " / "   +  count.ToString();

            i ++ ;

        }

         // 更新线程

         public   void  UpdataThread()

        {

             try

            {

                 // 在对控件的调用方法进行调用时,或需要一个简单委托又不想自己定义时可以使用该委托。

                MethodInvoker mi  =   new  MethodInvoker( this .AddData);

                 while  ( true )

                {

                     // 在创建控件的基础句柄所在线程上异步执行指定的委托

                     this .BeginInvoke(mi);

                    Thread.Sleep( 50 );

                }

            }

             catch  (ThreadInterruptedException)

            {

                 // 针对具体问题定制异常抛出显示

            }

             finally

            {

                 // 做一些处理

            }

        }

         // 启动线程

         public   void  StartThread()

        {

            StopThread();

            timerThread  =   new  Thread( new  ThreadStart(UpdataThread));

             // 获取或设置一个值，该值指示某个线程是否为后台线程。

            timerThread.IsBackground  =   true ;

            timerThread.Start();

        }

         // 停止线程

         public   void  StopThread()

        {

             if  (timerThread  !=   null )

            {

                 // 中断线程

                timerThread.Interrupt();

                timerThread  =   null ;

            }

        }

         // 启动线程,显示结果

         private   void  btnStart_Click( object  sender, EventArgs e)

        {

             // 调用线程启动函数

            count  =   int .Parse(textBox1.Text);

             this .StartThread();

        }

         // 停止线程

         private   void  btnStop_Click( object  sender, EventArgs e)

        {

             // 调用线程停止函数

             this .StopThread();

        }       

    }

}