C# task多线程创建，暂停，继续，结束使用

1、多线程任务创建

 private void button1_Click(object sender, EventArgs e) //创建线程{CancellationToken cancellationToken = tokensource.Token;Task.Run(() =>  //模拟耗时任务{for (int i = 0; i < 100; i++){if (cancellationToken.IsCancellationRequested){return;}m.WaitOne(); //当m等于true，才会往下执行，否则一直在此等待textBox1.Text = i.ToString();Thread.Sleep(1000);}}, cancellationToken);//绑定令牌到多线程}

2、线程暂停

 private void button2_Click(object sender, EventArgs e) //暂停线程{m.Reset();  //阻塞线程}

3、线程继续

   private void button3_Click(object sender, EventArgs e) //继续线程{m.Set();}

4、取消线程

   private void button4_Click(object sender, EventArgs e) //取消线程{tokensource.Cancel();}

完整版代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;namespace WindowsFormsApp1
{public partial class Form1 : Form{public Form1(){InitializeComponent();CheckForIllegalCrossThreadCalls = false;}ManualResetEvent m = new ManualResetEvent(true); //实例化阻塞事件CancellationTokenSource tokensource=new CancellationTokenSource(); //声明令牌private void button1_Click(object sender, EventArgs e) //创建线程{CancellationToken cancellationToken = tokensource.Token;Task.Run(() =>  //模拟耗时任务{for (int i = 0; i < 100; i++){if (cancellationToken.IsCancellationRequested){return;}m.WaitOne(); //当m等于true，才会往下执行，否则一直在此等待textBox1.Text = i.ToString();Thread.Sleep(1000);}}, cancellationToken);//绑定令牌到多线程}private void button2_Click(object sender, EventArgs e) //暂停线程{m.Reset();  //阻塞线程}private void button3_Click(object sender, EventArgs e) //继续线程{m.Set();}private void button4_Click(object sender, EventArgs e) //取消线程{tokensource.Cancel();}}
}

软件界面如下