Thread thread=new Thread(new ThreadStart(method));//創(chuàng)建線程
thread.Start(); //啟動(dòng)線程

Thread thread=new Thread(new ParameterizedThreadStart(method));//創(chuàng)建線程

thread.Start(3); //啟動(dòng)線程

public delegate void ThreadStart()

class Program
    {
        static void Main(string[] args)
        {
            //創(chuàng)建無(wú)參的線程
            Thread thread1 = new Thread(new ThreadStart(Thread1));
            //調(diào)用Start方法執(zhí)行線程
            thread1.Start();

            Console.ReadKey();
        }

        /// <summary>
        /// 創(chuàng)建無(wú)參的方法
        /// </summary>
        static void Thread1()
        {
            Console.WriteLine("這是無(wú)參的方法");
        }
    }

class Program
    {
        static void Main(string[] args)
        {
            //創(chuàng)建ThreadTest類的一個(gè)實(shí)例
            ThreadTest test=new ThreadTest();
            //調(diào)用test實(shí)例的MyThread方法
            Thread thread = new Thread(new ThreadStart(test.MyThread));
            //啟動(dòng)線程
            thread.Start();
            Console.ReadKey();
        }
    }

    class ThreadTest
    {
        public void MyThread()
        {
            Console.WriteLine("這是一個(gè)實(shí)例方法");
        }
    }

static void Main(string[] args)
 {
       //通過(guò)匿名委托創(chuàng)建
       Thread thread1 = new Thread(delegate() { Console.WriteLine("我是通過(guò)匿名委托創(chuàng)建的線程"); });
       thread1.Start();
       //通過(guò)Lambda表達(dá)式創(chuàng)建
       Thread thread2 = new Thread(() => Console.WriteLine("我是通過(guò)Lambda表達(dá)式創(chuàng)建的委托"));
       thread2.Start();
       Console.ReadKey();
 }

class Program
    {
        static void Main(string[] args)
        {
            //通過(guò)ParameterizedThreadStart創(chuàng)建線程
            Thread thread = new Thread(new ParameterizedThreadStart(Thread1));
            //給方法傳值
            thread.Start("這是一個(gè)有參數(shù)的委托");
            Console.ReadKey();
        }

        /// <summary>
        /// 創(chuàng)建有參的方法
        /// 注意：方法里面的參數(shù)類型必須是Object類型
        /// </summary>
        /// <param name="obj"></param>
        static void Thread1(object obj)
        {
            Console.WriteLine(obj);
        }
    }

static void Main(string[] args)
        {
            //獲取正在運(yùn)行的線程
            Thread thread = Thread.CurrentThread;
            //設(shè)置線程的名字
            thread.Name = "主線程";
            //獲取當(dāng)前線程的唯一標(biāo)識(shí)符
            int id = thread.ManagedThreadId;
            //獲取當(dāng)前線程的狀態(tài)
            ThreadState state= thread.ThreadState;
            //獲取當(dāng)前線程的優(yōu)先級(jí)
            ThreadPriority priority= thread.Priority;
            string strMsg = string.Format("Thread ID:{0}\n" + "Thread Name:{1}\n" +
                "Thread State:{2}\n" + "Thread Priority:{3}\n", id, thread.Name,
                state, priority);

            Console.WriteLine(strMsg);

            Console.ReadKey();
        }

class Program
    {
        static void Main(string[] args)
        {
            //演示前臺(tái)、后臺(tái)線程
            BackGroundTest background = new BackGroundTest(10);
            //創(chuàng)建前臺(tái)線程
            Thread fThread = new Thread(new ThreadStart(background.RunLoop));
            //給線程命名
            fThread.Name = "前臺(tái)線程";


            BackGroundTest background1 = new BackGroundTest(20);
            //創(chuàng)建后臺(tái)線程
            Thread bThread = new Thread(new ThreadStart(background1.RunLoop));
            bThread.Name = "后臺(tái)線程";
            //設(shè)置為后臺(tái)線程
            bThread.IsBackground = true;

            //啟動(dòng)線程
            fThread.Start();
            bThread.Start();
        }
    }

    class BackGroundTest
    {
        private int Count;
        public BackGroundTest(int count)
        {
            this.Count = count;
        }
        public void RunLoop()
        {
            //獲取當(dāng)前線程的名稱
            string threadName = Thread.CurrentThread.Name;
            for (int i = 0; i < Count; i++)
            {
                Console.WriteLine("{0}計(jì)數(shù)：{1}",threadName,i.ToString());
                //線程休眠500毫秒
                Thread.Sleep(1000);
            }
            Console.WriteLine("{0}完成計(jì)數(shù)",threadName);

        }
    }

Lock(expression)
{
statement_block
}

class Program
    {
        static void Main(string[] args)
        {
            BookShop book = new BookShop();
            //創(chuàng)建兩個(gè)線程同時(shí)訪問(wèn)Sale方法
            Thread t1 = new Thread(new ThreadStart(book.Sale));
            Thread t2 = new Thread(new ThreadStart(book.Sale));
            //啟動(dòng)線程
            t1.Start();
            t2.Start();
            Console.ReadKey();
        }
    }



    class BookShop
    {
        //剩余圖書數(shù)量
        public int num = 1;
        public void Sale()
        {
            int tmp = num;
            if (tmp > 0)//判斷是否有書，如果有就可以賣
            {
                Thread.Sleep(1000);
                num -= 1;
                Console.WriteLine("售出一本圖書，還剩余{0}本", num);
            }
            else
            {
                Console.WriteLine("沒(méi)有了");
            }
        }
    }

class Program
    {
        static void Main(string[] args)
        {
            BookShop book = new BookShop();
            //創(chuàng)建兩個(gè)線程同時(shí)訪問(wèn)Sale方法
            Thread t1 = new Thread(new ThreadStart(book.Sale));
            Thread t2 = new Thread(new ThreadStart(book.Sale));
            //啟動(dòng)線程
            t1.Start();
            t2.Start();
            Console.ReadKey();
        }
    }



    class BookShop
    {
        //剩余圖書數(shù)量
        public int num = 1;
        public void Sale()
        {
            //使用lock關(guān)鍵字解決線程同步問(wèn)題
            lock (this)
            {
                int tmp = num;
                if (tmp > 0)//判斷是否有書，如果有就可以賣
                {
                    Thread.Sleep(1000);
                    num -= 1;
                    Console.WriteLine("售出一本圖書，還剩余{0}本", num);
                }
                else
                {
                    Console.WriteLine("沒(méi)有了");
                }
            }
        }
    }

private void btn_Test_Click(object sender, EventArgs e)
        {
            //創(chuàng)建一個(gè)線程去執(zhí)行這個(gè)方法:創(chuàng)建的線程默認(rèn)是前臺(tái)線程
            Thread thread = new Thread(new ThreadStart(Test));
            //Start方法標(biāo)記這個(gè)線程就緒了，可以隨時(shí)被執(zhí)行，具體什么時(shí)候執(zhí)行這個(gè)線程，由CPU決定
            //將線程設(shè)置為后臺(tái)線程
            thread.IsBackground = true;
            thread.Start();
        }

        private void Test()
        {
            for (int i = 0; i < 10000; i++)
            {
                this.textBox1.Text = i.ToString();
            }
        }

 private void Form1_Load(object sender, EventArgs e)
 {
        //取消跨線程的訪問(wèn)
        Control.CheckForIllegalCrossThreadCalls = false;
 }

//定義回調(diào)
private delegate void DoSomeCallBack(Type para);
//聲明回調(diào)
DoSomeCallBack doSomaCallBack;

doSomeCallBack=new DoSomeCallBack(DoSomeMethod);

Opt obj.Invoke(doSomeCallBack,arg);

object Control.Invoke(Delegate method,params object[] args);

private void DoSomeMethod(type para)
{
//方法體
Opt obj.someMethod(para);
}

namespace MultiThreadDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        //定義回調(diào)
        private delegate void setTextValueCallBack(int value);
        //聲明回調(diào)
        private setTextValueCallBack setCallBack;

        private void btn_Test_Click(object sender, EventArgs e)
        {
            //實(shí)例化回調(diào)
            setCallBack = new setTextValueCallBack(SetValue);
            //創(chuàng)建一個(gè)線程去執(zhí)行這個(gè)方法:創(chuàng)建的線程默認(rèn)是前臺(tái)線程
            Thread thread = new Thread(new ThreadStart(Test));
            //Start方法標(biāo)記這個(gè)線程就緒了，可以隨時(shí)被執(zhí)行，具體什么時(shí)候執(zhí)行這個(gè)線程，由CPU決定
            //將線程設(shè)置為后臺(tái)線程
            thread.IsBackground = true;
            thread.Start();
        }

        private void Test()
        {
            for (int i = 0; i < 10000; i++)
            {
                //使用回調(diào)
                textBox1.Invoke(setCallBack, i);
            }
        }

        /// <summary>
        /// 定義回調(diào)使用的方法
        /// </summary>
        /// <param name="value"></param>
        private void SetValue(int value)
        {
            this.textBox1.Text = value.ToString();
        }
    }
}

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 MyAsyncThreadDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 異步方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnAsync_Click(object sender, EventArgs e)
        {
            Console.WriteLine($"***************btnAsync_Click Start {Thread.CurrentThread.ManagedThreadId}");
            Action<string> action = this.DoSomethingLong;
            // 調(diào)用委托(同步調(diào)用)
            action.Invoke("btnAsync_Click_1");
            // 異步調(diào)用委托
            action.BeginInvoke("btnAsync_Click_2",null,null);
            Console.WriteLine($"***************btnAsync_Click End    {Thread.CurrentThread.ManagedThreadId}");
        }

        /// <summary>
        /// 同步方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSync_Click(object sender, EventArgs e)
        {
            Console.WriteLine($"****************btnSync_Click Start {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
            int j = 3;
            int k = 5;
            int m = j + k;
            for (int i = 0; i < 5; i++)
            {
                string name = string.Format($"btnSync_Click_{i}");
                this.DoSomethingLong(name);
            }
        }


        private void DoSomethingLong(string name)
        {
            Console.WriteLine($"****************DoSomethingLong {name} Start {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
            long lResult = 0;
            for (int i = 0; i < 1000000000; i++)
            {
                lResult += i;
            }
            Console.WriteLine($"****************DoSomethingLong {name}   End {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")} {lResult}***************");
        }
    }
}

private void btnAsync_Click(object sender, EventArgs e)
{
      Console.WriteLine($"***************btnAsync_Click Start {Thread.CurrentThread.ManagedThreadId}");
      //Action<string> action = this.DoSomethingLong;
      //// 調(diào)用委托(同步調(diào)用)
      //action.Invoke("btnAsync_Click_1");
      //// 異步調(diào)用委托
      //action.BeginInvoke("btnAsync_Click_2",null,null);
      Action<string> action = this.DoSomethingLong;
      for (int i = 0; i < 5; i++)
      {
           //Thread.Sleep(5);
           string name = string.Format($"btnAsync_Click_{i}");
           action.BeginInvoke(name, null, null);
      }
      Console.WriteLine($"***************btnAsync_Click End    {Thread.CurrentThread.ManagedThreadId}");
}

private void btnAsyncAdvanced_Click(object sender, EventArgs e)
{
      Console.WriteLine($"****************btnAsyncAdvanced_Click Start {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
      Action<string> action = this.DoSomethingLong;
      action.BeginInvoke("btnAsyncAdvanced_Click", null, null);
      // 需求：異步多線程執(zhí)行完之后再打印出下面這句
      Console.WriteLine($"到這里計(jì)算已經(jīng)完成了。{Thread.CurrentThread.ManagedThreadId.ToString("00")}。");
      Console.WriteLine($"****************btnAsyncAdvanced_Click End {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
}

private void btnAsyncAdvanced_Click(object sender, EventArgs e)
{
    Console.WriteLine($"****************btnAsyncAdvanced_Click Start {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
    Action<string> action = this.DoSomethingLong;
    // 定義一個(gè)回調(diào)
    AsyncCallback callback = p =>
    {
       Console.WriteLine($"到這里計(jì)算已經(jīng)完成了。{Thread.CurrentThread.ManagedThreadId.ToString("00")}。");
    };
    // 回調(diào)作為參數(shù)
    action.BeginInvoke("btnAsyncAdvanced_Click", callback, null);
    Console.WriteLine($"****************btnAsyncAdvanced_Click End {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
 }

private void btnAsyncAdvanced_Click(object sender, EventArgs e)
{
            // 需求：異步多線程執(zhí)行完之后再打印出下面這句
            Console.WriteLine($"****************btnAsyncAdvanced_Click Start {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
            Action<string> action = this.DoSomethingLong;
            // 無(wú)序的
            //action.BeginInvoke("btnAsyncAdvanced_Click", null, null);

            IAsyncResult asyncResult = null;
            // 定義一個(gè)回調(diào)
            AsyncCallback callback = p =>
            {
                // 比較兩個(gè)變量是否是同一個(gè)
                Console.WriteLine(object.ReferenceEquals(p,asyncResult));
                Console.WriteLine($"到這里計(jì)算已經(jīng)完成了。{Thread.CurrentThread.ManagedThreadId.ToString("00")}。");
            };
            // 回調(diào)作為參數(shù)
            asyncResult= action.BeginInvoke("btnAsyncAdvanced_Click", callback, null);
            Console.WriteLine($"****************btnAsyncAdvanced_Click End {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
}

private void btnAsyncReturnVlaue_Click(object sender, EventArgs e)
{
       // 定義一個(gè)無(wú)參數(shù)、int類型返回值的委托
       Func<int> func = () =>
       {
             Thread.Sleep(2000);
             return DateTime.Now.Day;
       };
       // 輸出委托同步調(diào)用的返回值
       Console.WriteLine($"func.Invoke()={func.Invoke()}");
       // 委托的異步調(diào)用
       IAsyncResult asyncResult = func.BeginInvoke(p =>
       {
            Console.WriteLine(p.AsyncState);
       },"異步調(diào)用返回值");
       // 輸出委托異步調(diào)用的返回值
       Console.WriteLine($"func.EndInvoke(asyncResult)={func.EndInvoke(asyncResult)}");
}