C# 线程传参

传参方式有两种：

1、创建带参构造方法类传参

2、利用Thread.start（8）直接传参，该方法会接收一个对象，并将该对象传递给线程，因此在线程中启动的方法

必须接收object类型的单个参数。

3、闭包传参该方法使用lambda表达式。

3.1 lambda表达式中使用任何局部变量时 ,C# 会自动生成一个类，并将该变量作为该类的一个属性。实际上与第一种方式基本一样，但是我们无需定义类，C#会自动编译实现该类。

3.2 使用lambda表达式会导致一些问题，如使用多个lambda表达式中使用相同的变量，他们会共享该变量值

using System;

using System.Threading;

namespace testThread_Transferparameters

{

    class Program

    {

        static void Main(string[] args)

        {

            //

            var sample = new ThreadSample();

            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();

            threadtwo.Join();

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

             //

            var threadthree = new Thread(() => CountNumbers());

            threadthree.Name = "threadthree";

            threadthree.Start();

            threadthree.Join();

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

            int i = ;

            var threadfour = new Thread(() => PrintNumber(i));

            i = ;

            var threadfive = new Thread(() => PrintNumber(i));

            threadfour.Start();

            threadfive.Start();

        }

        static void count(object iterations)

        {

            CountNumbers((int)iterations);

        }

        static void CountNumbers(int iterations)

        {

            for (int i = ; 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 = ; i <= _iterations; i++)

            {

                Thread.Sleep(TimeSpan.FromSeconds(0.5));

                Console.WriteLine("{0} prints {1}", Thread.CurrentThread.Name, i);

            }

        }

    }

}

结果如下：

巴特西

C# 线程传参

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