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The author:(作者)qq
published in(发表于) 2014/7/11 9:23:32
C#教程:删除线程

C#教程:删除线程

删除线程

线程的Abort方法用于永久地停止托管线程。调用Abort方法时,公共语言运行库在目标线程中引发ThreadAbortException,目标线程可捕捉此异常。一旦线程被中止,它将无法重新启动。

如果在应用程序中使用了多线程,辅助线程还没有执行完毕,在关闭窗体的时候必须要关闭辅助线程,否则会引发异常。

示例

线程的删除

下面的代码实现了删除线程t的功能。

namespace ThreadTest

{

public partial class Form1 : Form

{

private Thread t = null;

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

t = new Thread(new ThreadStart(ThMethord));

t.Start();

}

public void ThMethord()

{

MessageBox.Show("线程启动");

}

private void Form1_FormClosed(object sender, FormClosedEventArgs e)

{

if (t.IsAlive)

{

t.Abort();//关闭线程

}

}

}

}

完整程序代码如下:

★ ★★★★Form1.cs窗体代码文件完整程序代码★★★★★

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;

using System.Diagnostics;

using System.Net.Mail;

using System.IO;

namespace ThreadTest

{

public partial class Form1 : Form

{

private Thread t = null;

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

t = new Thread(new ThreadStart(ThMethord));

t.Start();

}

public void ThMethord()

{

MessageBox.Show("线程启动!");

}

private void Form1_FormClosed(object sender, FormClosedEventArgs e)

{

if (t.IsAlive)

{

t.Abort();

}

}

}

}

★ ★★★★Form1.Designer.cs窗体设计文件完整程序代码★★★★★

namespace ThreadTest

{

partial class Form1

{

///



/// 必需的设计器变量。

///


private System.ComponentModel.IContainer components = null;

///

/// 清理所有正在使用的资源。

///


/// 如果应释放托管资源,为 true;否则为 false。

protected override void Dispose(bool disposing)

{

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

{

components.Dispose();

}

base.Dispose(disposing);

}

#region Windows 窗体设计器生成的代码

///

/// 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。

///


private void InitializeComponent()

{

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

this.SuspendLayout();

//

// button1

//

this.button1.Location = new System.Drawing.Point(122, 191);

this.button1.Name = "button1";

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

this.button1.TabIndex = 0;

this.button1.Text = "启动线程";

this.button1.UseVisualStyleBackColor = true;

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

//

// Form1

//

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

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

this.ClientSize = new System.Drawing.Size(345, 287);

this.Controls.Add(this.button1);

this.Name = "Form1";

this.Text = "Form1";


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