C#多线程间传入值和返回值问题

不喜欢说那么多废话，直接上代码，不懂看注释！站在代码面前，一切问题将不再是问题！

一、不带参数的线程

class main
    {
       public static void main(string[] args)
        {
            Thread th1 = new Thread(DoWork);
            th1.Start();

            Thread th2 = new Thread(new ParameterizedThreadStart(DoWorkWithParam));
            object data = null;
            th2.Start(data);
        }

        private void DoWork()
        {
            //do something
        }

        private void DoWorkWithParam(object param)
        {
            string data = param.ToString();
            //do something
        }

    }

二、带一个参数

class main
    {
       public static void main(string[] args)
        {
            Thread th2 = new Thread(new ParameterizedThreadStart(DoWorkWithParam));
            object data = null;
            th2.Start(data);
        }

        private void DoWorkWithParam(object param)
        {
            string data = param.ToString();
            //do something
        }

    }

三、带两个及两个以上的参数

public   class   ThreadWithParams   { 
        private   string   param1; 
        private   int   param2; 

        public   ThreadWithParams(string   param1,   int   param2   )   
        { 
               this. param1   =   param1   ; 
               this. param2   =   param2; 
        } 

        public   void   ThreadProc()   
        { 
                Console.WriteLine(param1,   param2);   
        } 
} 

public   class   Main{ 
        public   static   void   Main()   
        { 

　　　　　　　　　　//初始化两个参数
                ThreadWithParams   twp   =   new   ThreadWithState( "i am param1",   2);
                Thread   t   =   new   Thread(new   ThreadStart(twp.ThreadProc)); 
                t.Start();    
        } 
}