COM Interoperability in .NET Part 2

To illustrate COM type communication with managed code, Let us see an example
in which I create a C# class library which has a class named Calculatorwhich supports three methods named Add(),Subtract()and Hello(). Notice that we define another interface named Imuldiv.

namespace Simpleclasslib
{
  using System;
  using System.Runtime.InteropServices;

  public interface Imuldiv
  {
    int Multiply(int x,int y);
    int Division(int x,int y);
  }
  
  public class Calculator:Imuldiv
  {
    public Calculator(){}
    public int Add(int x,int y) {
      return x+y;
    }
    public int Subtract(int x,int y)
    {
      return x-y;
    }
    int Imuldiv.Multiply(int x,int y)
    {
      return x*y;
    }
    int Imuldiv.Division(int x,int y)
    {
      return x/y;
    }
    public string Hello(string strName)
    {
      string str ;
      str = "Hello " + strName ;
      return str ;
    }
  }
}

Once the managed code is written, the compilation process is the same as it would be for any other piece of managed code.

csc /out:Server.dll /target:library Calculator.cs

Now let us see the Server.dll in the ILDasm.exe.In that you can see the calculator class members and Imuldiv Interface members.