Attributes(2): Displaying attributes for a class.(显示类属性)

输出类属性

 

using System; using System.Reflection;   namespace Attribute02 { //用于Class和Struct类型 [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct)] class Creator : Attribute { private string date; private string name; private double version;   public Creator(string name, string date) { this.name = name; this.date = date; this.version = 0.1; }   public Double Version { get { return this.version; } set { this.version = value; } }   //输出 public void Dump() { Console.WriteLine("Name: {0} Date: {1} Version: {2}", this.name, this.date, this.version); } } [Creator("PSM", "2013-09-01", Version=1.0)] class ATestClass01 { public ATestClass01() { } } [Creator("PSM", "2013-09-01", Version = 2.0)] class ATestClass02 { public ATestClass02() { } } [Creator("PSM", "2013-09-01", Version = 3.0)] class ATestClass03 { public ATestClass03() { } }   class Program { static void Main(string[] args) { PrintAttributeInformation(typeof(ATestClass01)); PrintAttributeInformation(typeof(ATestClass02)); PrintAttributeInformation(typeof(ATestClass03)); Console.ReadLine(); }   static void PrintAttributeInformation(Type typeName) { Console.WriteLine("Attributes for class {0}", typeName); object[] attr = typeName.GetCustomAttributes(true); foreach (object o in attr) { Console.WriteLine("Attribute {0}", 0); if (o is Creator) { ((Creator)o).Dump(); } } } } }