线程的学习

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace ConsoleApplication1
{
    /// <summary>
    /// 声明一个委托
    /// </summary>
    /// <param name="Diameter"></param>
    /// <returns></returns>
    delegate double CalculateMethod(double Diameter);
    class Program
    {
        /// <summary>
        /// 定义委托对象
        /// </summary>
        public static CalculateMethod calcMethod;
        /// <summary>
        /// 计算结果
        /// </summary>
        public static double result = 0;
        static void Main(string[] args)
        {
            /***********一、简单线程***********/
            //ThreadStart threadStart = new ThreadStart(Calculate);
            //Thread thread = new Thread(threadStart);
            //thread.Start();

            /***********二、线程传递单个参数******************/
            //使用这个这个委托定义的线程的启动函数可以接受一个输入参数
            //ParameterizedThreadStart threadStart = new ParameterizedThreadStart(Calculate);
            //Thread thread = new Thread(threadStart);
            //thread.Start(0.9);

            /***********三、线程使用线程类调用方法******************/
            //MyThread t = new MyThread(5.0);
            //ThreadStart threadStart = new ThreadStart(t.Calculate);
            //Thread thread = new Thread(threadStart);
            //thread.Start();

            /***********四、把参数传递变成了属性共享，把逻辑和逻辑涉及的数据封装在一起（匿名方法）******************/
            //double Diameter = 0.9d;
            //Thread thread = new Thread(new ThreadStart(delegate()
            //{
            //    Console.WriteLine("Calculate Start");
            //    Thread.Sleep(2000);
            //    Console.WriteLine("匿名方法: The perimeter Of Circle with a Diameter of {0} is {1}", Diameter, Diameter * Math.PI); ;
            //    Console.Read();
            //}));
            //thread.Start();

            /***********王、线程池******************/
            WaitCallback w = new WaitCallback(Calculate);
            ThreadPool.QueueUserWorkItem(w, 1.0);
            ThreadPool.QueueUserWorkItem(w, 2.0);
            ThreadPool.QueueUserWorkItem(w, 3.0);
            ThreadPool.QueueUserWorkItem(w, 4.0);
        }
        /// <summary>
        /// 简单线程调用方法
        /// </summary>
        /// <param name="arg"></param>
        public static void Calculate()
        {
            double Diameter = 0.9d;
            Console.WriteLine("Calculate Start");
            Thread.Sleep(2000);//睡2秒
            Console.Write("简单线程：The perimeter Of Circle with a Diameter of {0} is {1}", Diameter, Diameter * Math.PI);
            Console.Read();
        }
        /// <summary>
        /// 传递单个参数线程启用方法
        /// </summary>
        /// <param name="arg"></param>
        public static void Calculate(object arg)
        {
            double Diameter = (double)arg;
            Console.WriteLine("Calculate Start");
            Thread.Sleep(2000);//睡2秒
            Console.Write("线程传递单个参数：The perimeter Of Circle with a Diameter of {0} is {1}", Diameter, Diameter * Math.PI);
            Console.Read();
        }
        /// <summary>
        /// 线程池调用方法
        /// </summary>
        /// <param name="Diameter"></param>
        /// <returns></returns>
        public static void Calculate(double Diameter)
        {
            Console.WriteLine("Calculate Start");
            Thread.Sleep(2000);//睡2秒            
            Console.Write("线程传递单个参数：The perimeter Of Circle with a Diameter of {0} is {1}", Diameter, Diameter * Math.PI);
            Console.Read();
        }
    }
    /// <summary>
    /// 线程类(将线程要执行的方法和它需要的参数封装到类)
    /// </summary>
    public class MyThread
    {
        public double Diameter = 10;
        public double Result = 0;
        public MyThread(double Diameter)
        {
            this.Diameter = Diameter;
        }
        public void Calculate()
        {
            Console.WriteLine("Calculate Start");
            Thread.Sleep(2000);//睡2秒
            Console.WriteLine("Calculate End, Diameter is {0},Result is {1}", this.Diameter, Diameter * Math.PI);
            Console.Read();
        }
    }
}