Task.Run() 异步多线程

 public class Student
        {
            public string name { get; set; }
            public string sex { get; set; }
        }
        public static void Show01()
        {
            int r = new Random().Next(3, 4);
            System.Threading.Thread.Sleep(r * 1000);
            Console.WriteLine("线程01 不带参数，不带返回值");
        }
        public static void Show02(int a,int b)
        {
            int r = new Random().Next(3, 4);
            System.Threading.Thread.Sleep(r * 1000);
            Console.WriteLine("线程02 带参数，不带返回值");
        }
        public static Student Show03(int a, int b)
        {
            int r = new Random().Next(3, 4);
            System.Threading.Thread.Sleep(r * 1000);
            Console.WriteLine("线程03 带参数， 带返回值");
            a = b;
            return new Student() { name="张三", sex="男" };
        }
        static void Main(string[] args)
        {
            Task.Run(() => Show01());
            Task.Run(() => Show02(1,2));
            var s=  Task.Run(() => Show03(1, 4));
            
            Console.WriteLine("Hello World!");
            Console.WriteLine("姓名："+s.Result.name+"; 性别："+s.Result.sex );
            Console.ReadLine();
        }