public int data { get; set; } Console.WriteLine("{0}",obj.data);

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;namespace ConsoleApplication8
 {
     class AAA
     {
         public int data { get; set; }
     }
     class Program
     {
         static void Main(string[] args)
         {
             AAA obj = new AAA();
             Console.WriteLine("{0}",obj.data);
         }
 //        0
 //请按任意键继续. . .
     }
 }