反射，遍历类的属性

 public class Tester
    {

    public int? A
    {
        get;
        set;
    }
    public int? B
    {
        get;
        set;
    }
        public static void Main()
        {
            Tester t = new Tester();
            Type tp = typeof(Tester);
            PropertyInfo[] pinfo = tp.GetProperties();
            foreach (PropertyInfo info in pinfo)
            {
                Console.WriteLine(info.Name);
            }
            Console.ReadLine();
        }
    }