using System;

using System.Reflection;

​

namespace BugFixApplication {

   //a custom attribute BugFix to be assigned to a class and its members

   [AttributeUsage(

      AttributeTargets.Class |

      AttributeTargets.Constructor |

      AttributeTargets.Field |

      AttributeTargets.Method |

      AttributeTargets.Property,

      AllowMultiple = true)]

​

   public class DeBugInfo : System.Attribute {

      private int bugNo;

      private string developer;

      private string lastReview;

      public string message;

      public DeBugInfo(int bg, string dev, string d) {

         this.bugNo = bg;

         this.developer = dev;

         this.lastReview = d;

      }

      public int BugNo {

         get {

            return bugNo;

         }

      }

      public string Developer {

         get {

            return developer;

         }

      }

      public string LastReview {

         get {

            return lastReview;

         }

      }

      public string Message {

         get {

            return message;

         }

         set {

            message = value;

         }

      }

   }

   [DeBugInfo(45, "Zara Ali", "12/8/2012", Message = "Return type mismatch")]

   [DeBugInfo(49, "Nuha Ali", "10/10/2012", Message = "Unused variable")]

   class Rectangle {

      //member variables

      protected double length;

      protected double width;

      public Rectangle(double l, double w) {

         length = l;

         width = w;

      }

      [DeBugInfo(55, "Zara Ali", "19/10/2012", Message = "Return type mismatch")]

      public double GetArea() {

         return length * width;

      }

      [DeBugInfo(56, "Zara Ali", "19/10/2012")]

      public void Display() {

         Console.WriteLine("Length: {0}", length);

         Console.WriteLine("Width: {0}", width);

         Console.WriteLine("Area: {0}", GetArea());

      }

   }//end class Rectangle

 public  class ExecuteRectangle {

    public   static void Main(string[] args) {

         Rectangle r = new Rectangle(4.5, 7.5);

         r.Display();

         Type type = typeof(Rectangle);

         //iterating through the attribtues of the Rectangle class

         foreach (Object attributes in type.GetCustomAttributes(false)) {

            DeBugInfo dbi = (DeBugInfo)attributes;

            if (null != dbi) {

               Console.WriteLine("Bug no: {0}", dbi.BugNo);

               Console.WriteLine("Developer: {0}", dbi.Developer);

               Console.WriteLine("Last Reviewed: {0}", dbi.LastReview);

               Console.WriteLine("Remarks: {0}", dbi.Message);

            }

         }

         //iterating through the method attribtues

         foreach (MethodInfo m in type.GetMethods()) {

            foreach (Attribute a in m.GetCustomAttributes(true)) {

               DeBugInfo dbi = (DeBugInfo)a;

               if (null != dbi) {

                  Console.WriteLine("Bug no: {0}, for Method: {1}", dbi.BugNo, m.Name);

                  Console.WriteLine("Developer: {0}", dbi.Developer);

                  Console.WriteLine("Last Reviewed: {0}", dbi.LastReview);

                  Console.WriteLine("Remarks: {0}", dbi.Message);

               }

            }

         }

         Console.ReadLine();

      }

   }

}