public    class Program
 {
      
       public  static void Main(string[] args)
        {
            Pair<int, string> p = new Pair<int, string>(12,"name");
            Console.WriteLine(p.First+","+p.Second);
            Console.ReadLine();
        }
    }
 public interface IPair<T1, T2>
 {
     T1 First { get; set; }
     T2 Second { get; set; }

 }
 public struct Pair<T1, T2> : IPair<T1, T2>
 {
     public Pair(T1 first, T2 second)
         : this()//结构体的构造参数需要加上这个。
     {
         this.First = first;
         this.Second = second;

     }
     public T1 First { get; set; }
     public T2 Second { get; set; }
 }