Listing 7-3 extracted from chapter Reflection, late binding, attributes

Listing 7-2<     > Listing 7-4

This listing can be compiled with the command line:
csc.exe /out:Foo.dll /target:library Example_7_3_to_rename_Foo.cs
Errors: 0 Warnings: 0

using System;
namespace NMFoo {
   public class Calc {
      public Calc() {
         Console.WriteLine("Calc.Constructor called!");
      }
      public int Sum(int a, int b) {
         Console.WriteLine("Mathod Calc.Sum() called!");
         return a + b;
      }
   }
}