Attribute整理

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Runtime;
 6 
 7 namespace reflect1
 8 {
 9     using System;
10     using System.Reflection;
11 
12     // Define a custom attribute with one named parameter.
13     [AttributeUsage(AttributeTargets.All)]
14     public class MyAttribute : Attribute
15     {
16         private string myName;
17         public MyAttribute(string name)
18         {
19             myName = name;
20         }
21         public string Name
22         {
23             get
24             {
25                 return myName;
26             }
27         }
28     }
29 
30     // Define a class that has the custom attribute associated with one of its members.
31     public class MyClass1 : MyclassFather
32     {
33         [My("This is an example attribute.")]
34         public void MyMethod(int i)
35         {
36             return;
37         }
38     }
39 
40     public class MyclassFather
41     {
42         public int _a;
43         public int A { 
44             get{return this._a;}
45             set{this._a=value;}
46             }
47 
48         protected virtual MyAttribute DataGridTypeInfo
49         {
50             get
51             {
52                 var typeInfos = (MyAttribute[])GetType().GetCustomAttributes(typeof(MyAttribute), false);//取当前类，类型为MyAttribute的特性，取到MyAttribute类放入类型为MyAttribute[]数组中
53                 if (typeInfos.Length != 1) throw new Exception("Missing DataGridTypeInfo attribute for " + GetType());
54                 return typeInfos[0];
55             }
56         }
57     }
58 
59     public class MemberInfo_GetCustomAttributes
60     {
61         public static void Main()
62         {
63             //MyClass1 my = new MyClass1();
64             //my.Equals();
65             //my.GetHashCode();
66             //my.GetType();
67             try
68             {
69                 
70                 // Get the type of MyClass1.
71                 Type myType = typeof(MyClass1);
72                 // Get the members associated with MyClass1.
73                 MemberInfo[] myMembers = myType.GetMembers();
74 
75                 // Display the attributes for each of the members of MyClass1.
76                 for (int i = 0; i < myMembers.Length; i++)
77                 {
78                     Object[] myAttributes = myMembers[i].GetCustomAttributes(typeof(System.Security.SecuritySafeCriticalAttribute), true);
79                     if (myAttributes.Length > 0)
80                     {
81                         Console.WriteLine("\nThe attributes for the member {0} are: \n", myMembers[i]);
82                         for (int j = 0; j < myAttributes.Length; j++)
83                             Console.WriteLine("The type of the attribute is {0}.", myAttributes[j]);
84                     }
85                 }
86             }
87             catch (Exception e)
88             {
89                 Console.WriteLine("An exception occurred: {0}", e.Message);
90             }
91             Console.Read();
92         }
93     }
94 }