线程Demo演示

最新推荐文章于 2021-12-09 22:54:11 发布

转载最新推荐文章于 2021-12-09 22:54:11 发布 · 113 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/Hollson/archive/2010/07/21/1782262.html

本文通过多个示例展示了C#中线程与委托的使用方法，包括如何在线程中使用委托来执行特定任务，如何通过锁机制保证线程安全等。

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主线程执行委托Demo：

1..无委托执行线程

private void button1_Click(object sender, EventArgs e)

{

Thread th1 = new Thread(new ThreadStart(mtd));

th1.Start();

}

private void mtd()

{

Thread.Sleep(3000);

MessageBox.Show("线程启动了");

}

2．//用主线程执行委托

private void button1_Click(object sender, EventArgs e)

{

Thread th1 = new Thread(new ThreadStart(mtd));

th1.Start();

}

private delegate void mydel();

private void mtd()

{

Thread.Sleep(3000);

MessageBox.Show("线程启动了,接下来要执行委托方法了。。。");

mydel d = new mydel(fun); //用主线程执行委托

d += fun;

d();

}

private void fun()

{

Thread.Sleep(2000);

MessageBox.Show("我是被委托执行的");

}

3．//用主线程执行委托

private void button1_Click(object sender, EventArgs e)

{

Thread th1 = new Thread(new ThreadStart(mtd));

th1.Start();

}

private delegate void mydel();

private void mtd()

{

Thread.Sleep(3000);

MessageBox.Show("线程启动了,接下来要执行委托方法了。。。");

mydel d = new mydel(fun);

this.Invoke(d,null);//调用执行委托方法

}

private void fun()

{

Thread.Sleep(2000);

MessageBox.Show("我是被委托执行的");

}

4．线程Demo

private void button1_Click(object sender, EventArgs e)

{

//创建一个线程组，同时开启多个线程，分别委托执行某一个方法

ThreadStart ths = new ThreadStart(this.fun);

Thread[]th = new Thread[3];

for (int i = 0; i < 3;i++ )

{

th[i] = new Thread(ths);

th[i].Start();

}

int adsum = 0;

private void fun()

{

lock (this) //若不锁，则出现抢进程情况

{

for (int i = 0; i < 3; i++)

{

adsum += 2;

MessageBox.Show(adsum.ToString());

}

5．

private void button1_Click(object sender, EventArgs e)

{

ThreadStart thst = new ThreadStart(add);

Thread th = new Thread(thst);

th.Start();

Thread th1 = new Thread(thst);

th1.Start();

Thread th2 = new Thread(thst);

th2.Start();

}

int k;

private void add()

{

lock(this)

{

for (int i = 0; i < 100; i++)

{

k++;

}

MessageBox.Show(k.ToString());

}

转载于:https://www.cnblogs.com/Hollson/archive/2010/07/21/1782262.html