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72 Microsoft Visual Studio 2010: A Beginner’s Guide
Just type in the class name in the field and press ENTER. The carat will locate to the
inside of the class block. Now that you know how to create classes, you’ll need to know
how to add members, starting with methods.
Writing Methods
You can divide your algorithms into blocks of code called methods. In different programming
languages, methods are called functions, procedures, or subroutines. I’ll use the term method
as a generic term, except when I need to be more specific. You’ve already used methods
when coding Console.WriteLine, where WriteLine is a method of the Console class. A
method contains one or more statements. Reasons for creating methods include the ability to
modularize your code, isolate complex operations in one place, or group a common operation
that can be reused in multiple places. The following sections show you how to declare and
use methods.
Declaring and Using a Method
To start off, I’ll show you a very simple method so that you can see the syntax and
understand the program flow. Listing 3-5 will move the Console.Writeline statement from
the Main method discussed in Chapter 2 into a new containing method and then add a
statement to the Main method that calls the new method.
Listing 3-5 Declaring and calling a method
C# (Program.cs)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace FirstProgram
{
class Program
{
static void Main(string[] args)
{
MessagePrinter msgPrint = new MessagePrinter();
msgPrint.PrintMessageInstance();
}
}