// file2.cs
using System;
namespace vijay
{
    class DC : BC
    {
        internal void Method2()
        {
            Console.WriteLine("I'm from File 2 Derived Class");
        }
    }


    class Program
    {
        static void Main()
        {
            DC ob = new DC();
            ob.Method1();
            ob.Method2();

            Console.ReadKey();
        }
    }
}                            

' file2.vb
Namespace vijay
	Class DC
		Inherits BC
		Friend Sub Method2()
			Console.WriteLine("I'm from File 2 Derived Class")
		End Sub
	End Class


	Class Program
		Private Shared Sub Main()
			Dim ob As New DC()
			ob.Method1()
			ob.Method2()

			Console.ReadKey()
		End Sub
	End Class
End Namespace