多线程编程入门Thread_Task_async_await简单秒懂

`
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 多线程编程入门Thread_Task_async_await简单秒懂
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

///

/// 单线程做菜(会卡界面,窗口不能拖动,其他按钮不能点击,因为这里用的主线程就是UI线程)
///

///
///
private void btnSingleThread_Click(object sender, EventArgs e)
{
Thread.Sleep(3000);
MessageBox.Show("素材做好了", "友情提示");
Thread.Sleep(5000);
MessageBox.Show("荤菜做好了", "友情提示");
}

///

/// Thread创建线程(开了新线程不会卡界面了)
///

///
///
private void btnThread_Click(object sender, EventArgs e)
{
Thread t1 = new Thread(_ =>
{
Thread.Sleep(3000);
MessageBox.Show("素材做好了", "友情提示");
Thread.Sleep(5000);
MessageBox.Show("荤菜做好了", "友情提示");
});

t1.Start();
}

///

/// Task创建线程(推荐这种方式创建线程,性能会更好,管理会更方便)
///

///
///
private void btnTask_Click(object sender, EventArgs e)
{
Task.Run(() =>
{
Thread.Sleep(3000);
MessageBox.Show("素材做好了", "友情提示");
Thread.Sleep(5000);
MessageBox.Show("荤菜做好了", "友情提示");
});
}

///

/// 两个线程同时处理(两个任务并行运行,好处是利用cpu的多核,每个核心做一个事情,可以大大提高效率)
///

///
///
private void btnWith_Click(object sender, EventArgs e)
{
Task.Run(() =>
{
Thread.Sleep(3000);
MessageBox.Show("素材做好了", "友情提示");
});

Task.Run(() =>
{
Thread.Sleep(5000);
MessageBox.Show("荤菜做好了", "友情提示");
});
}

///

/// 无顺序执行,这里会先执行主线程的"菜都做好了,大家快来吃饭!"
///

///
///
private void btnNon_Click(object sender, EventArgs e)
{
Task.Run(() =>
{
Thread.Sleep(3000);
MessageBox.Show("素材做好了", "友情提示");
});

Task.Run(() =>
{
Thread.Sleep(5000);
MessageBox.Show("荤菜做好了", "友情提示");
});

MessageBox.Show("菜都做好了,大家快来吃饭!", "提示");
}

///

/// 异步,有顺序的执行,等待一个线程执行完了,才能继续往下面执行
///

///
///
private async void btnNext_Click(object sender, EventArgs e)
{
await Task.Run(() =>
{
Thread.Sleep(3000);
MessageBox.Show("素材做好了", "友情提示");
});

await Task.Run(() =>
{
Thread.Sleep(5000);
MessageBox.Show("荤菜做好了", "友情提示");
});

MessageBox.Show("菜都做好了,大家快来吃饭!", "提示");

}

///

/// 两个线程并行处理完后再执行
///

///
///
private void btnTongshi_Click(object sender, EventArgs e)
{

List ts = new List();

ts.Add(Task.Run(() =>
{
Thread.Sleep(3000);
MessageBox.Show("素材做好了", "友情提示");
}));

ts.Add(Task.Run(() =>
{
Thread.Sleep(5000);
MessageBox.Show("荤菜做好了", "友情提示");
}));

//等待所有任务都执行完成后,再来做另外的事情
Task.WhenAll(ts).ContinueWith(t => //t:是前一个任务里面的信息,也就是说后续的任务可以得到前一个任务里的信息
{
MessageBox.Show("菜都做好了,大家快来吃饭!", "提示");
});

}
}
}

`