.NET Programming: A Practical Guide Using C#

A Simple “Hello User” Program

Let's get right down to business. The following program displays a greeting to the console:

// Project HelloUser

class MyApp
{
     public static void Main() {
       System.String userName = "Jay";
       System.Console.WriteLine("Hello " + userName);
     }
}

This simple application defines a class called MyApp that has a single static public method called Main. Under .NET, methods must generally be members of a class or a struct. A class or a struct form the basic unit of organization under .NET and are generally referred to as types. We explore the differences between a class and a struct in detail in Chapter 4.

Static method Main is considered the entry point for the program. When the program is run, the .NET runtime starts executing ...