c#中使用多线程

    技术2022-05-11  123

    using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;

    using System.Threading;

    namespace student{ /// <summary> /// Form1 的摘要说明。 /// </summary> public class Form1 : System.Windows.Forms.Form {  private System.Windows.Forms.Button button1;  private System.Windows.Forms.Button button2;  private System.Windows.Forms.Button button3;

      ArrayList threads = new ArrayList();

      private System.Windows.Forms.ListView listView1;  private System.Windows.Forms.ColumnHeader columnHeader1;  private System.Windows.Forms.ColumnHeader columnHeader2;  /// <summary>  /// 必需的设计器变量。  /// </summary>  private System.ComponentModel.Container components = null;

      public Form1()  {   //   // Windows 窗体设计器支持所必需的   //   InitializeComponent();

       //   // TOD 在 InitializeComponent 调用后添加任何构造函数代码   //  }

      /// <summary>  /// 清理所有正在使用的资源。  /// </summary>  protected override void Dispose( bool disposing )  {   if( disposing )   {    if (components != null)     {     components.Dispose();    }   }   base.Dispose( disposing );  }

      #region Windows 窗体设计器生成的代码  /// <summary>  /// 设计器支持所需的方法 - 不要使用代码编辑器修改  /// 此方法的内容。  /// </summary>  private void InitializeComponent()  {   this.button1 = new System.Windows.Forms.Button();   this.button2 = new System.Windows.Forms.Button();   this.button3 = new System.Windows.Forms.Button();   this.listView1 = new System.Windows.Forms.ListView();   this.columnHeader1 = new System.Windows.Forms.ColumnHeader();   this.columnHeader2 = new System.Windows.Forms.ColumnHeader();   this.SuspendLayout();   //    // button1   //    this.button1.Location = new System.Drawing.Point(24, 216);   this.button1.Name = "button1";   this.button1.TabIndex = 1;   this.button1.Text = "Add";   this.button1.Click += new System.EventHandler(this.button1_Click);   //    // button2   //    this.button2.Location = new System.Drawing.Point(104, 216);   this.button2.Name = "button2";   this.button2.TabIndex = 2;   this.button2.Text = "Del";   this.button2.Click += new System.EventHandler(this.button2_Click);   //    // button3   //    this.button3.Location = new System.Drawing.Point(184, 216);   this.button3.Name = "button3";   this.button3.TabIndex = 3;   this.button3.Text = "DelAll";   this.button3.Click += new System.EventHandler(this.button3_Click);   //    // listView1   //    this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {                      this.columnHeader1,                      this.columnHeader2});   this.listView1.FullRowSelect = true;   this.listView1.GridLines = true;   this.listView1.Location = new System.Drawing.Point(0, 0);   this.listView1.Name = "listView1";   this.listView1.Size = new System.Drawing.Size(288, 208);   this.listView1.TabIndex = 5;   this.listView1.View = System.Windows.Forms.View.Details;   //    // columnHeader1   //    this.columnHeader1.Text = "线程编号";   this.columnHeader1.Width = 81;   //    // columnHeader2   //    this.columnHeader2.Text = "value";   this.columnHeader2.Width = 180;   //    // Form1   //    this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);   this.ClientSize = new System.Drawing.Size(292, 266);   this.Controls.Add(this.listView1);   this.Controls.Add(this.button3);   this.Controls.Add(this.button2);   this.Controls.Add(this.button1);   this.Name = "Form1";   this.Text = "Form1";   this.Load += new System.EventHandler(this.Form1_Load);   this.ResumeLayout(false);

      }  #endregion

      /// <summary>  /// 应用程序的主入口点。  /// </summary>  [STAThread]  static void Main()   {   Application.Run(new Form1());  }

      private void Form1_Load(object sender, System.EventArgs e)  {    }

      private void button1_Click(object sender, System.EventArgs e)  {   Add();  }

      private void button2_Click(object sender, System.EventArgs e)  {   Del();  }

      private void button3_Click(object sender, System.EventArgs e)  {

       while(threads.Count>0)   {    Thread t1 = (Thread)threads[0];    if(t1.IsAlive)    {     t1.Abort();    }    threads.RemoveAt(0);    lock(listView1)    {     listView1.Items.RemoveAt(0);    }   }  }

      private void Add()  {   int count = threads.Count;   if(count<10)   {    Thread t = new Thread(new ThreadStart(Process));    t.Start();    threads.Add(t);    lock(listView1)    {     listView1.Items.Insert(count, new ListViewItem(new string[]{count.ToString(),"0"}));    }   }  }

      private void Del()  {   int count = threads.Count;   if(count>0)   {    Thread t1 = (Thread)threads[count-1];    if(t1.IsAlive)    {     t1.Abort();    }    threads.RemoveAt(count-1);    lock(listView1)    {     listView1.Items.RemoveAt(count-1);    }   }  }

      private void Process()  {   int i = 1;   while(true)   {    i++;    int j = threads.IndexOf(Thread.CurrentThread);    lock(listView1)    {     listView1.Items[j].SubItems[1].Text = i.ToString();    }    Thread.Sleep(0);   }  } }}

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