C#链式编程

一、基本链式格式

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            Db person = new Db { Name = "Tom" }
              .Run()
              .Sing()
              .Swim();
        }
        public class Db
        {
            public string Name { get; set; }
            public Db Run()
            {
                Console.WriteLine("Run");
                return this;
            }
            public Db Swim()
            {
                Console.WriteLine("Swim");
                return this;
            }
            public Db Sing()
            {
                Console.WriteLine("Sing");
                return this;
            }
        }
    }

链式编程是将多个操作（多行代码）通过点号"."链接在一起成为一句代码。(定义不严密，表达能力好的请给修正一下)以下为常规代码与链式代码的比较：

/// <summary>
        /// 链式编程示例3  对比
        /// </summary>
        private void Example3()
        {
            //链式代码
            Person person = new Person { Name = "Tom" }
                .Run()
                .Sing()
                .Swim()
                .Run()
                .Sing()
                .Swim();
            //常规代码
            Person person2 = new Person();
            person2.Run();
            person2.Sing();
            person2.Swim();
            person2.Run();
            person2.Sing();
            person2.Swim();
        }

二、