初次接觸C#時做的一個小例子，先貼到這吧。由於多線程編程非常復雜，這個小例子只能算是一個入門線的知識點吧
首先建一個應用程序項目，命名為ThreadExample，在窗體上放一個文本框(textBox1) ，一個標簽(lblResult)，再放兩個按鈕，分別命名為btnStart、btnStop。
窗體代碼：
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 = "啟動";
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 = "關閉";
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;
}
}
程序代碼：
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
...{
//聲明一個線程
private Thread timerThread;
//聲明一個變量,用來存儲label值
int count, i = 0;
public ThreadExample()
...{
InitializeComponent();
}
//把label的值加1;
public void AddData()
...{
//顯示lable的值
if (i == count)
i = 0;
this.lblResult.Text = i.ToString() + "/" + count.ToString();
i++;
}
//更新線程
public void UpdataThread()
...{
try
...{
//在對控件的調用方法進行調用時,或需要一個簡單委托又不想自己定義時可以使用該委托。
MethodInvoker mi = new MethodInvoker(this.AddData);
while (true)
...{
//在創建控件的基礎句柄所在線程上異步執行指定的委托
this.BeginInvoke(mi);
Thread.Sleep(50);
}
}
catch (ThreadInterruptedException)
...{
//針對具體問題定制異常拋出顯示
}
finally
...{
//做一些處理
}
}
//啟動線程
public void StartThread()
...{
StopThread();
timerThread = new Thread(new ThreadStart(UpdataThread));
//獲取或設置一個值，該值指示某個線程是否為後台線程。
timerThread.IsBackground = true;
timerThread.Start();
}
//停止線程
public void StopThread()
...{
if (timerThread != null)
...{
//中斷線程
timerThread.Interrupt();
timerThread = null;
}
}
//啟動線程,顯示結果
private void btnStart_Click(object sender, EventArgs e)
...{
//調用線程啟動函數
count = int.Parse(textBox1.Text);
this.StartThread();
}
//停止線程
private void btnStop_Click(object sender, EventArgs e)
...{
//調用線程停止函數
this.StopThread();
}
}
}
編譯後，運行，在文本框中輸入200，點擊開始按鈕，標簽為動態增長，點擊停止可以暫停程序的執行。
