多线程

接上节多线程学习：http://blog.csdn.net/iuhxq/archive/2005/10/12/500295.aspx

本节把Form主线程从其他线程分离出来，实现数据从线程的传入传出

代码如下：

From1.cs代码如下：

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

using System.Threading;

namespace student
{
 /// <summary>
 /// http://blog.csdn.net/iuhxq
 /// </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;

  private Class1 c;

  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();

   //
   // TODO: 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()
  {
   //
   // Class1初始化
   //
   this.c = new Class1();
   this.c.Update += new student.Class1.EventHandler(c_Update);

   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";
   //
   // 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 c_Update(int index)
  {
   listView1.Items[index].SubItems[1].Text = c.Result[index].ToString();
  }

  private void button1_Click(object sender, System.EventArgs e)
  {
   listView1.Items.Add(new ListViewItem(new string[]{c.Result.Count.ToString(),"0"}));
   c.Add();
  }

  private void button2_Click(object sender, System.EventArgs e)
  {
   int index = c.Del();
   if(index>=0)
   {
    listView1.Items.RemoveAt(index);
   }
  }
 }
}
添加类Class1：

Class1代码如下：

using System;
using System.Collections;
using System.Threading;

namespace student
{
 /// <summary>
 /// Class1 的摘要说明。
 /// </summary>
 public class Class1
 {

  public ArrayList Threads = new ArrayList();
  public ArrayList Result = new ArrayList();

  public event EventHandler Update;
  public delegate void EventHandler(int index);
  
  public Class1()
  {
   //
   // TODO: http://blog.csdn.net/iuhxq
   //
   Update += new EventHandler(Class1_Update);
  }

  private void Process()
  {
   int i = 1;
   while(true)
   {
    i++;
    int index = Threads.IndexOf(Thread.CurrentThread);
    Result[index] = i;
    if(Update!=null)Update(index);
    Thread.Sleep(0);
   }
  }

  public int Add()
  {
   Thread t = new Thread(new ThreadStart(Process));
   t.Start();
   Threads.Add(t);
   lock(Result)
   {
    Result.Add(0);
   }
   return Threads.Count-1;
  }

  public int Del()
  {
   int count = Threads.Count;
   if(count>0)
   {
    Thread t1 = (Thread)Threads[count-1];
    if(t1.IsAlive)
    {
     t1.Abort();
    }
    Threads.RemoveAt(count-1);
    lock(Result)
    {
     Result.RemoveAt(count-1);
    }
   }
   return count-1;
  }

  private void Class1_Update(int index)
  {

  }
 }
}