C#多线程Thread使用示例详解

本文实例为大家分享了C#多线程Thread使用的示例代码，供大家参考，具体内容如下

多线程：

线程生命周期状态图：

C#线程优先级（概率高低）：

基本使用示例：

using System;
using System.Threading;

namespace month_9_10._1009
{
    class Run5
    {
        /* 测试线程的调用过程
         * 主线程输出world，子线程输出hello
         */
        public static void showHello()
        {
            for(int i = 0; i < 100; i++)
            {
                Console.WriteLine($"Hello\t#{Thread.CurrentThread.Name}");
            }
        }
        public static void Main(string[] args)
        {
            Thread.CurrentThread.Name = "Main Thread!";
            var childThreadRef = new ThreadStart(showHello);
            Console.WriteLine("This is Main process!!!");
            var childThread = new Thread(childThreadRef);
            childThread.Name = "Child Thread!";
            childThread.Start();
            for (int i = 0; i < 100; i++)
            {
                Console.WriteLine($"World!\t#{Thread.CurrentThread.Name}");
            }
        }
    }
}

实例1：窗体标签循环滚动

using System;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;

namespace RollMove
{
    public partial class Form1 : Form
    {
        Thread th1 = null;
        public Form1()
        {
            InitializeComponent();

        }
        private void Form1_Load(object sender, EventArgs e)
        {
            int _sx = 40;
            int _ex = 280;
            int _top = 70;
            th1 = new Thread(() => {
                while (true)
                {
                    if (_sx <= _ex)
                    {
                        _ex = 280;
                        label1.Location = new Point(_sx, _top);
                        Thread.Sleep(20);
                        _sx += 5;
                    }
                    else
                    {
                        _ex = 40;
                        label1.Location = new Point(_sx, _top);
                        Thread.Sleep(20);
                        _sx -= 5;
                    }
                }
            });
            th1.Start();
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            if (th1!=null)
            {
                th1.Abort();
            }
        }
    }
}

实例2：进度条

using System;
using System.Threading;
using System.Windows.Forms;

namespace month_9_10._1012
{
    public partial class Form_3 : Form
    {
        public static Print.Print print = Console.WriteLine;
        Thread th1, th2;
        public Form_3()
        {
            InitializeComponent();
            Text = "Welcome!";
            CheckForIllegalCrossThreadCalls = false;
            th1 = new Thread(new ThreadStart(Pro1));
            th1.Priority = ThreadPriority.Lowest;
            th1.Start();
            th2 = new Thread(new ThreadStart(Pro2));
            th2.Priority = ThreadPriority.Highest;
            //th2.Start();
            print(th1.Priority);
            print(th2.Priority);

        }

        void Pro1()
        {
            print("XXXXXXX");
            for (int i = 0; i <= 100; i++)
            {

                progressBar1.Value = i;
                label1.Text = $"{progressBar1.Value}%";
                Thread.Sleep(200);
                if (i == 20)
                {
                    th2.Start();
                    th2.Join();
                }
            }
        }
        void Pro2()
        {
            print("YYYYYYYY");
            for (int i = 0; i <= 100; i++)
            {
                progressBar2.Value = i;
                label2.Text = $"{progressBar2.Value}%";
                Thread.Sleep(100);
            }
        }

        private void progressBar1_Click(object sender, EventArgs e)
        {
            print("This is Main threading!");
        }

        private void Form_3_Load(object sender, EventArgs e)
        {

        }

        private void Form_3_FormClosing_1(object sender, FormClosingEventArgs e)
        {
            if (th1.ThreadState == ThreadState.Running)
                th1.Abort();
            if (th2.ThreadState == ThreadState.Running)
                th2.Abort();
        }
    }
}

实例三：线程同步（售票模拟）

using System;
using System.Threading;

namespace month_9_10._1012
{
    class Run2
    {
        static Print.Print print = Console.WriteLine;
        int _num = 10;
        void Ticket()
        {
            while (true)
            {
                //上锁
                //lock (this)
                //{
                //    if (_num > 0)
                //    {
                //        Thread.Sleep(100);
                //        print(Thread.CurrentThread.Name + "--票数：" + _num--);
                //    }
                //}

                //放置监视器
                Monitor.Enter(this);
                if (_num > 0)
                {
                    Thread.Sleep(100);
                    print(Thread.CurrentThread.Name + "--票数：" + _num--);
                }
                Monitor.Exit(this);
            }
        }
        static void Main()
        {
            var a1 = new Run2();
            Thread t1 = new Thread(new ThreadStart(a1.Ticket));
            t1.Name = "线程一";
            Thread t2 = new Thread(new ThreadStart(a1.Ticket));
            t2.Name = "线程二";
            Thread t3 = new Thread(new ThreadStart(a1.Ticket));
            t3.Name = "线程三";
            Thread t4 = new Thread(new ThreadStart(a1.Ticket));
            t4.Name = "线程四";
            t1.Start();
            t2.Start();
            t3.Start();
            t4.Start();
        }
    }
}

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