1. class Test : System.Dynamic.DynamicObject  
2.         {  
3.             public override bool TryGetMember(System.Dynamic.GetMemberBinder binder, out object result)  
4.             {  
5.                 if (map != null)  
6.                 {  
7.                     string name = binder.Name;  
8.                     object value;  
9.                     if (map.TryGetValue(name, out value))  
10.                     {  
11.                         result = value;  
12.                         return true;  
13.                     }  
14.                 }  
15.                 return base.TryGetMember(binder, out result);  
16.             }  
17.   
18.             System.Collections.Generic.Dictionary<string, object> map;  
19.   
20.             public override bool TryInvokeMember(System.Dynamic.InvokeMemberBinder binder, object[] args, out object result)  
21.             {  
22.                 if (binder.Name == "set" && binder.CallInfo.ArgumentCount == 2)  
23.                 {  
24.                     string name = args[0] as string;  
25.                     if (name == null)  
26.                     {  
27.                         //throw new ArgumentException("name");  
28.                         result = null;  
29.                         return false;  
30.                     }  
31.                     if (map == null)  
32.                     {  
33.                         map = new System.Collections.Generic.Dictionary<string, object>();  
34.                     }  
35.                     object value = args[1];  
36.                     map.Add(name, value);  
37.                     result = value;  
38.                     return true;  
39.   
40.                 }  
41.                 return base.TryInvokeMember(binder, args, out result);  
42.             }  
43.         }  
44.         static void Main(string[] args)  
45.         {  
46.             dynamic t = new Test();  
47.             string @a = "gg";  
48.             t.set(@a,"galrj");  
49.             Console.WriteLine(t.gg);  
50.         }  

http://blog.csdn.net/cqims21/article/details/17613733

https://q.cnblogs.com/q/15970/

.net dynamic动态加属性