C#泛型

    看到泛型都感觉无从入手，其实不然..

泛型指的的泛指的类型，话句话说就是类型可以是任意的，但一旦确定了某一种类型之后，那么类型确定，不能在换之。  List<T> :可以把T换成任何的类型。从而减少了装箱和拆箱的操作。
  定义一个泛型类。
 看段练习吧...

using System;
 public class studyGeneric
 {
     public static void Main()
     {
        People<string,int> p = new People<string,int>("张三",25);
        People<int,string> p1 = new People<int,string>(23,"lishi");
    Console.WriteLine(p);
    Console.WriteLine(p1);
     }
 }
public class People<S,I>
{
    private I age ;
    public I Age
    {
      get{return this.age;}
      set{this.age = value;}
    }
    public S Name
    {
     get;set;
    }
    public People(){}
    public People(S s,I i)
    {
      this.Name = s;
      this.age = i;
    }
}