Link for csharp, asp.net, ado.net, dotnet basics, mvc and sql server video tutorial playlists www.youtube.com/user/kudvenkat/playlists My Blog: www.csharp-video-tutorials.blogspot.co.uk In this video, we will discuss 1. Basic structure of a C# program. 2. What is a Namespace. 3. Purpose of Main method. Sample program used in the demo // Namespace Declaration using System; class Pragim { public static void Main() { // Write to console Console.WriteLine ("Welcome to PRAGIM Technologies!"); } } The namespace declaration, using System, indicates that you are using the System namespace. A namespace is used to organize your code and is collection of classes, interfaces, structs, enums and delegates. Main method is the entry point into your application.