Yurttas/PL/OOL/CS/F/07/00/A01.cs

  1/**
  2 *  Copyright(C) 2004
  3 *  All Rights Reserved. Salih Yurttas, ZCubes, BitsOfCode Software Systems, Inc..
  4 *
  5 *  Permission to use, copy, modify, and distribute this
  6 *  software and its documentation for EDUCATIONAL purposes
  7 *  and without fee is hereby granted provided that this
  8 *  copyright notice appears in all copies.
  9 *
 10 *  @date   : August 1, 2004.
 11 *  @author : Salih Yurttas, Yi Yang.
 12 */
 13
 14
 15using System;
 16using System.Reflection;
 17
 18namespace Attribute00
 19{
 20
 21  // create custom attribute to be assigned to class members
 22  [AttributeUsage(AttributeTargets.Class |
 23     AttributeTargets.Constructor        |
 24     AttributeTargets.Field              |
 25     AttributeTargets.Method             |
 26     AttributeTargets.Property,
 27     AllowMultiple = true)]
 28  public class BugFixAttribute : System.Attribute
 29  {
 30    // private member data
 31    private int bugID;
 32    private string programmer;
 33    private string date;
 34
 35    // attribute constructor for 
 36    // positional parameters
 37    public BugFixAttribute(int bugID,
 38                           string programmer,
 39                           string date)
 40    {
 41      this.bugID = bugID;
 42      this.programmer = programmer;
 43      this.date = date;
 44    }
 45
 46    // accessor
 47    public int BugID
 48    {
 49      get
 50      {
 51        return bugID;
 52      }
 53    }
 54
 55    // accessor
 56    public string Programmer
 57    {
 58      get
 59      {
 60        return programmer;
 61      }
 62    }
 63
 64   // accessor
 65    public string Date
 66    {
 67      get
 68      {
 69        return date;
 70      }
 71    }
 72  }
 73
 74  // ********* assign the attributes to the class ********
 75  [BugFixAttribute(100,"SY","01/03/03")]
 76  [BugFixAttribute(107,"Haiwen","01/04/04")]
 77  [BugFixAttribute(103,"Yi","07/31/04")]
 78  public class A01
 79  {
 80    [BugFixAttribute(103,"Yi","08/01/04")]
 81    public double DoFunc1(double p1)
 82    {
 83      return p1 + DoFunc2(p1);
 84    }
 85
 86    public double DoFunc2(double p1)
 87    {
 88      return p1/3;
 89    }
 90  }
 91
 92  public class Test00
 93  {
 94    public static void PrintAttributes(BugFixAttribute bfa)
 95    {
 96      Console.WriteLine("BugID: {0}", bfa.BugID);
 97      Console.WriteLine("Programmer: {0}", bfa.Programmer);
 98      Console.WriteLine("Date: {0}", bfa.Date);
 99    }
100
101    public static void Main(string[] args)
102    {
103      // get the member information and use it to
104      // retrieve the custom attributes
105      MemberInfo inf = typeof(A01);
106    
107      object[] attributes;
108  
109      attributes = inf.GetCustomAttributes(typeof(BugFixAttribute),
110                                           false);
111
112      //print out the attributes for class
113      Console.WriteLine("printing class attributes");
114      foreach(Object attribute in attributes)
115        PrintAttributes((BugFixAttribute)attribute);
116
117      //get the customer attributes for the methods 
118      Type theType = Type.GetType("Attibute00.A01");
119      MemberInfo[] methodInfo = theType.GetMembers();
120
121      //print out the attributes for member if have
122      Console.WriteLine("\nprinting member attributes");
123      foreach(MemberInfo info in methodInfo)
124      {
125        attributes = info.GetCustomAttributes(false);
126        foreach(object attribute in attributes)
127          PrintAttributes((BugFixAttribute)attribute);
128      }
129    }
130  }
131
132}