构造方法调用另一个构造方法，用this

 using System;
 class Person
 {
     public int age;
     public string name;
     public Person(int age, string name){
         this.age = age;
         this.name = name;
     }
     /*构造方法调用另一个构造方法，使用this*/
     public Person():this(,""){}
 }
 public class Test
 {
     public static void Main( string [] args )
     {
        Person p = new Person();
        Console.WriteLine(p.age);
        Person p1 = new Person(,"Li Li");
        Console.WriteLine(p1.name);
     }
 }