C# code snipped: Create Excel instance using the dynamic keyword

The code below creates dynamic Excel.Application object without referencing the Excel COM server dll.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {

            dynamic excel = Activator.CreateInstance(Type.GetTypeFromProgID("Excel.Application"));
            excel.Visible = true;
            Console.Read();

        }
    }
}