Create your own attribute and use reflection to read metadata in the Rectangle class

Description

using System;
using System.Reflection;

   [AttributeUsage(AttributeTargets.Class |
   AttributeTargets.Constructor |
   AttributeTargets.Field |
   AttributeTargets.Method |
   AttributeTargets.Property,
   AllowMultiple = true)]

   public class CodeTester : System.Attribute {
      private int bugNo;
      private string developer;
      private string lastReview;
      public string message;

      public CodeTester(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;
         }
      }
   }
   [CodeTester(45, "Z", "12/8/2020", Message = "test")]
   [CodeTester(49, "N", "10/10/2020", Message = "test 1")]

   class Rectangle {
      protected double length;
      protected double width;
      public Rectangle(double l, double w) {
         length = l;
         width = w;
      }

      [CodeTester(55, "A", "19/10/2020", Message = "test")]
      public double GetArea() {
         return length * width;
      }

      [CodeTester(56, "Z", "19/10/2020")]
      public void Display() {
         Console.WriteLine("Length: {0}", length);
         Console.WriteLine("Width: {0}", width);
         Console.WriteLine("Area: {0}", GetArea());
      }
   }

   class ExecuteRectangle {
      static void Main(string[] args) {
         Rectangle r = new Rectangle(4.5, 7.5);
         r.Display();
         Type type = typeof(Rectangle);

         foreach (Object attributes in type.GetCustomAttributes(false)) {
            CodeTester dbi = (CodeTester)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);
            }
         }

         foreach (MethodInfo m in type.GetMethods()) {
            foreach (Attribute a in m.GetCustomAttributes(true)) {
               CodeTester dbi = (CodeTester)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);
               }
            }
         }
      }
   }
Create your own attribute and use reflection to read metadata in the Rectangle class - CSharp Custom Type

Description

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