对象存放到Object后保持的数据类型

using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;

namespace Test
{
    class Program
    {
        static void Main()
        {
            int userId = 43672;
            string userName = "f1234";
            DateTime addTime = DateTime.Now;
            Guid guid = Guid.NewGuid();

            object objUserId = userId;
            object objUserName = userName;
            object objAddTime = addTime;
            object objGuid = guid;

            Console.WriteLine("\nObject：");
            Console.WriteLine("objUserId \t：" + objUserId.GetType().ToString());
            Console.WriteLine("objUserName \t：" + objUserName.GetType().ToString());
            Console.WriteLine("objAddTime \t：" + objAddTime.GetType().ToString());
            Console.WriteLine("objGuid \t：" + objGuid.GetType().ToString());



            Console.WriteLine("\nHashtable：");
            Hashtable ht = new Hashtable();
            ht.Add("objUserId", userId);
            ht.Add("objUserName", userName);
            ht["objAddTime"] = objAddTime;
            ht["objGuid"] = objGuid;

            Console.WriteLine("objUserId \t：" + ht["objUserId"].GetType().ToString());
            Console.WriteLine("objUserName \t：" + ht["objUserName"].GetType().ToString());
            Console.WriteLine("objAddTime \t：" + ht["objAddTime"].GetType().ToString());
            Console.WriteLine("objGuid \t：" + ht["objGuid"].GetType().ToString());



            Console.WriteLine("\nDictionary<string, object>：");
            Dictionary<string, object> dict = new Dictionary<string, object>();
            dict.Add("objUserId", userId);
            dict.Add("objUserName", userName);
            dict["objAddTime"] = objAddTime;
            dict["objGuid"] = objGuid;

            Console.WriteLine("objUserId \t：" + dict["objUserId"].GetType().ToString());
            Console.WriteLine("objUserName \t：" + dict["objUserName"].GetType().ToString());
            Console.WriteLine("objAddTime \t：" + dict["objAddTime"].GetType().ToString());
            Console.WriteLine("objGuid \t：" + dict["objGuid"].GetType().ToString());


            Console.WriteLine("\n执行完成");
            Console.ReadLine();
        }
    }
}

 

/*

Object：
objUserId       ：System.Int32
objUserName     ：System.String
objAddTime      ：System.DateTime
objGuid         ：System.Guid

Hashtable：
objUserId       ：System.Int32
objUserName     ：System.String
objAddTime      ：System.DateTime
objGuid         ：System.Guid

Dictionary<string, object>：
objUserId       ：System.Int32
objUserName     ：System.String
objAddTime      ：System.DateTime
objGuid         ：System.Guid

执行完成
 
*/