C#中實現對象間的更新操作

      最近工作的時候遇到一個問題，根據Web端接收到的對象obj1，更新對應的對象值ogj2。先判斷obj1中屬性值是否為null，

若不等於null，則更新obj2中對應屬性值；若等於null，則保持obj2中對應屬性值不變。

      先創建Student Class:

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 namespace Property
 7 {
 8     public class Student
 9     {
10         public string Name { get; set; }
11 
12         public string  number { get; set; }
13 
14         public string School {get;set;}
15 
16         public string  Score { get; set; }
17     }
18 }

      方法實現：

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 namespace Property
 7 {
 8     class Program
 9     {
10         static void Main(string[] args)
11         {
12             Student std1 = new Student();
13             std1.Name = "Zhang San";
14             std1.number = "1001";
15             std1.School = "Jiangnan University";
16             std1.Score = "87.98";
17 
18             Student std2 = new Student();
19             std2.Name = "Li Si";
20             std2.Score = "98.98";
21 
22             Console.WriteLine("Before:");
23             foreach (System.Reflection.PropertyInfo p in std1.GetType().GetProperties())
24             {
25                 Console.WriteLine("{0}:   {1}", p.Name, p.GetValue(std1,null));
26  
27             }
28 
29             foreach (System.Reflection.PropertyInfo p in std2.GetType().GetProperties())
30             {
31                 //Console.WriteLine("{0}:   {1}", p.Name, p.GetValue(std2, null));
32                 if (p.GetValue(std2, null) != null)
33                     p.SetValue(std1, p.GetValue(std2, null), null);
34             }
35             Console.WriteLine("After:");
36             foreach (System.Reflection.PropertyInfo p in std1.GetType().GetProperties())
37             {
38                 Console.WriteLine("{0}:   {1}", p.Name, p.GetValue(std1, null));
39 
40             }
41             Console.ReadKey();
42 
43         }
44     }
45 }

        結果：

2016-04-30