C#遍历类的属性 PropertyInfo.Attributes

Posted 2022-11-24

.Attributes 属性

此属性表示与成员关联的特性。 所有成员都具有相对于特定成员类型定义的特性集。 属性特性使用户能够知道此属性是否是默认属性、SpecialName

若要获取 Attributes 从 Type 获取 PropertyInfo。 从 PropertyInfo

官方示例：获取类的特性

1 using System;
 2 using System.Reflection;
 3 
 4 public class Myproperty
 5 
 6     private string caption = "Default caption";
 7     public string Caption
 8     
 9         getreturn caption;
10         set if(caption!=value) caption = value;
11         
12     
13 
14 
15 class Mypropertyinfo
16 
17     public static int Main(string[] args)
18     
19         Console.WriteLine("\\nReflection.PropertyInfo");
20 
21         // Define a property.
22         Myproperty Myproperty = new Myproperty();
23         Console.Write("\\nMyproperty.Caption = " + Myproperty.Caption);
24 
25         // Get the type and PropertyInfo.
26         Type MyType = Type.GetType("Myproperty");
27         PropertyInfo Mypropertyinfo = MyType.GetProperty("Caption");
28 
29         // Get and display the attributes property.
30         PropertyAttributes Myattributes = Mypropertyinfo.Attributes;
31 
32         Console.Write("\\nPropertyAttributes - " + Myattributes.ToString());
33 
34         return 0;
35     
36 

官方参考：​​http://msdn.microsoft.com/zh-cn/library/system.reflection.propertyinfo.attributes​​

一个例子： 注意：貌似对字段无效

先建一个类User

1 namespace ClassLibrary1
 2 
 3     public class User    
 4            
 5         private int userid = 1;
 6         public int Userid
 7          
 8             get  return userid; 
 9             set  userid = value; 
10           
11         private string userName = "jghg";       
12         public string UserName
13             get  return userName;  
14             set  userName = value; 
15         
16         private string address = "ghjghj";
17         public string Address 
18             get  return address;  
19             set  address = value; 
20                 
21         private string email = "jhgjhg";
22         public string Email
23             get  return email; 
24             set  email = value; 
25         
26         private string phone = "ghjgjg";
27         public string Phone
28          
29             get  return phone; 
30             set  phone = value; 
31         
32     
33 

接着在主程序中获取类的属性，看代码

1 namespace ConsoleApplication2  
 2     class Program  
 3         static void Main(string[] args) 
 4          
 5             Type type = typeof(ClassLibrary1.User); 
 6             object obj = Activator.CreateInstance(type); 
 7             PropertyInfo[] props = type.GetProperties(BindingFlags.Public | BindingFlags.Instance); 
 8             foreach (PropertyInfo p in props)  
 9                 Console.WriteLine(p.Name); 
10              
11             Console.ReadLine(); 
12         
13      
14 

需要引入命名空间：

using System.Reflection;