向线程传递参数

参考<<C#多线程编程实战>>

using System;
using System.Threading;

namespace Chapter1.Recipe8
{
    class Program
    {
        static void Main(string[] args)
        {
            var sample = new ThreadSample(10);

            var threadOne = new Thread(sample.CountNumbers);
            threadOne.Name = "ThreadOne";
            threadOne.Start();
            threadOne.Join();

            Console.WriteLine("--------------------------");

            var threadTwo = new Thread(Count);
            threadTwo.Name = "ThreadTwo";
            threadTwo.Start(8);  //传递object类型的单个参数
            threadTwo.Join();

            Console.WriteLine("--------------------------");

            var threadThree = new Thread(() => CountNumbers(12));
            threadThree.Name = "ThreadThree";
            threadThree.Start();
            threadThree.Join();
            Console.WriteLine("--------------------------");

            //在多个lambda表达式中使用相同变量，会共享变量的值
            int i = 10;
            var threadFour = new Thread(() => PrintNumber(i));  //20
            i = 20;
            var threadFive = new Thread(() => PrintNumber(i)); //20
            threadFour.Start();
            threadFive.Start();
            
        }

        static void Count(object iterations)
        {
            CountNumbers((int)iterations);
        }

        static void CountNumbers(int iterations)
        {
            for (int i = 1; i <= iterations; i++)
            {
                Thread.Sleep(TimeSpan.FromSeconds(0.5));
                Console.WriteLine("{0} prints {1}", Thread.CurrentThread.Name, i);
            }
        }

        static void PrintNumber(int number)
        {
            Console.WriteLine(number);
        }

        class ThreadSample
        {
            private readonly int _iterations;

            public ThreadSample(int iterations)
            {
                _iterations = iterations;
            }
            public void CountNumbers()
            {
                for (int i = 1; i <= _iterations; i++)
                {
                    Thread.Sleep(TimeSpan.FromSeconds(0.5));
                    Console.WriteLine("{0} prints {1}", Thread.CurrentThread.Name, i);
                }
            }
        }
    }


}