C#多线程的Join()方法

class Program
    {
        static void Main(string[] args)
        {
            Thread threadA = new Thread(ThreadMethod);      
            threadA.Name = "線程A";
            Thread threadB = new Thread(ThreadMethod);      
            threadB.Name = "線程B";
            threadA.Start();　　　　　　　
            //threadA.Join();　     
            threadB.Start();　　　　　　　
            //threadB.Join();

            for (int i = 1; i <=3; i++)
            {
                Console.WriteLine("我是:主線程,我循環{1}次", Thread.CurrentThread.Name, i);
                Thread.Sleep(300);          //休眠300毫秒                                                
            }
            Console.ReadKey();
        }
        public static void ThreadMethod(object parameter)
        {
            for (int i = 1; i <=3; i++)
            {
                Console.WriteLine("我是:{0},我循環{1}次", Thread.CurrentThread.Name, i);
                Thread.Sleep(300);         //休眠300毫秒              
            }
        }
    }