how to compile

[merhaba]

hi,
I wanted to compile and run thee following C# program using "DOS SHELL window"
as described...but it did not work .All I can see is a blank notpad page..Which program should I
need to get it run...? What compiler need I use for C# program...?

> md C:\learncs
> cd C:\learncs
> C:
Then I create my first C# program, typeing"notepad hello.cs" and type (in the notepad)

    using System;
      public class Hello
    {
        public static void Main()
        {
            Console.WriteLine("Hello C# World :-)");
        }
    }

Is this how they compile C# programs?
Thanks