.Net 两个对像之间的映射

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Net;
using System.Reflection;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            UserModel u = new UserModel();

            u.UserName = "jinshuai";
            u.Age = 1200;

           IdentityModel im = new IdentityModel();





          im=  ConvertType<PropertyMapAttribute,IdentityModel,UserModel>(u,im); 

          Console.WriteLine(im.userName);

          Console.WriteLine(im.age); 

          Console.Read();

        }

        static T2  ConvertType<T1,T2,T3>(T3 SourceObj,T2 DestObj)
        {
            Type imt = DestObj.GetType();
            Type ut = SourceObj.GetType();

            PropertyInfo[] Parray = imt.GetProperties();

            PropertyInfo[] UParray = ut.GetProperties();

            foreach (PropertyInfo p in Parray)
            {
                PropertyInfo propert = imt.GetProperty(p.Name);

                object[] atarray = p.GetCustomAttributes(typeof(T1), true);

                var data = atarray.FirstOrDefault();

                dynamic a = (T1)data;

                if (a != null)
                {
                    foreach (PropertyInfo Up in UParray)
                    {
                        if (a.DestName == propert.Name && Up.Name == a.SourceName)
                        {
                            propert.SetValue(DestObj, Up.GetValue(SourceObj, null), null);
                        }
                    }
                }
            }

            return DestObj;
        

        }
    }




    public class UserModel {

        public string UserName { get; set; }
        public int Age { get; set; }
    
    }

    public class IdentityModel
    {
        [PropertyMapAttribute(SourceName = "UserName", DestName = "userName")]
        public string userName { get; set; }

        [PropertyMapAttribute(SourceName = "Age", DestName = "age")]
        public int age { get; set; }    
    
    }

    [AttributeUsage( AttributeTargets.Property )]
    public class PropertyMapAttribute:Attribute
    {
        public string SourceName { get; set; }
        public string DestName { get; set; }
    
    }
}