C#实现类似jQuery的方法连缀功能

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
 namespace CSharpMethodLikeJQuery
 {
   public class jQPerson
   {
     string Id { set; get; }
     string Name { set; get; }
     int Age { set; get; }
     string Sex { set; get; }
     string Info { set; get; }
 
     public jQPerson()
     {
 
     }
     /// <summary>
     /// 设置ID,返回this,即jQPerson实例
     /// </summary>
     /// <param name="Id"></param>
     /// <returns></returns>
     public jQPerson setId(string Id)
     {
       this.Id = Id;
       return this;
     }
     /// <summary>
     /// 返回this,即jQPerson实例
     /// </summary>
     /// <param name="name"></param>
     /// <returns></returns>
     public jQPerson setName(string name)
     {
 
       this.Name = name;
       return this;
     }
     /// <summary>
     /// 返回this,即jQPerson实例
     /// </summary>
     /// <param name="age"></param>
     /// <returns></returns>
     public jQPerson setAge(int age)
     {
 
       this.Age = age;
       return this;
     }
     /// <summary>
     /// 返回this,即jQPerson实例
     /// </summary>
     /// <param name="sex"></param>
     /// <returns></returns>
     public jQPerson setSex(string sex)
     {
 
       this.Sex = sex;
       return this;
     }
     /// <summary>
     /// 返回this,即jQPerson实例
     /// </summary>
     /// <param name="info"></param>
     /// <returns></returns>
     public jQPerson setInfo(string info)
     {
 
       this.Info = info;
       return this;
     }
     /// <summary>
     /// tostring输出键值对信息
     /// </summary>
     /// <returns></returns>
     public string toString()
     {
 
       return string.Format("Id:{0},Name:{1},Age:{2},Sex:{3},Info:{4}", this.Id, this.Name, this.Age, this.Sex, this.Info);
 
 
     }
 
   }
 }　

/// <summary>
     ///toString 的测试
     ///</summary>
     [TestMethod()]
     public void toStringTest()
     {
       jQPerson target = new jQPerson();
       target.setId("2")
          .setName("jack")
          .setAge(26)
          .setSex("man")
          .setInfo("ok");
       string expected = "Id:2,Name:jack,Age:26,Sex:man,Info:ok";
       string actual;
       actual = target.toString();
       Assert.AreEqual(expected, actual);
       //Assert.Inconclusive("验证此测试方法的正确性。");
     }