Attribute整理

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime;

namespace reflect1
{
    using System;
    using System.Reflection;

    // Define a custom attribute with one named parameter.
    [AttributeUsage(AttributeTargets.All)]
    public class MyAttribute : Attribute
    {
        private string myName;
        public MyAttribute(string name)
        {
            myName = name;
        }
        public string Name
        {
            get
            {
                return myName;
            }
        }
    }

    // Define a class that has the custom attribute associated with one of its members.
    public class MyClass1 : MyclassFather
    {
        [My("This is an example attribute.")]
        public void MyMethod(int i)
        {
            return;
        }
    }

    public class MyclassFather
    {
        public int _a;
        public int A { 
            get{return this._a;}
            set{this._a=value;}
            }

        protected virtual MyAttribute DataGridTypeInfo
        {
            get
            {
                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
                if (typeInfos.Length != 1) throw new Exception("Missing DataGridTypeInfo attribute for " + GetType());
                return typeInfos[0];
            }
        }
    }

    public class MemberInfo_GetCustomAttributes
    {
        public static void Main()
        {
            //MyClass1 my = new MyClass1();
            //my.Equals();
            //my.GetHashCode();
            //my.GetType();
            try
            {
                
                // Get the type of MyClass1.
                Type myType = typeof(MyClass1);
                // Get the members associated with MyClass1.
                MemberInfo[] myMembers = myType.GetMembers();

                // Display the attributes for each of the members of MyClass1.
                for (int i = 0; i < myMembers.Length; i++)
                {
                    Object[] myAttributes = myMembers[i].GetCustomAttributes(typeof(System.Security.SecuritySafeCriticalAttribute), true);
                    if (myAttributes.Length > 0)
                    {
                        Console.WriteLine("\nThe attributes for the member {0} are: \n", myMembers[i]);
                        for (int j = 0; j < myAttributes.Length; j++)
                            Console.WriteLine("The type of the attribute is {0}.", myAttributes[j]);
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("An exception occurred: {0}", e.Message);
            }
            Console.Read();
        }
    }
}

定义的attribute 加后缀Attribute，使用的时候名字可以不用带Attribute的后缀，如声明时候交MyAttribute用的时候只用My或者MyAttribute都可以。