ASP.NET 2.0 All-In-One Desk Reference For Dummies®

Chapter 1. C# Programming Basics

In This Chapter

✓	Examining keywords
✓	Inspecting statements
✓	Perusing blocks
✓	Reviewing comments
✓	Surveying classes
✓	Investigating variables
✓	Considering data types
✓	Observing operators
✓	Experiencing expressions

In this chapter, you find the basics of writing C# code. If you’ve been browsing around in the book, you’ve already seen plenty of C# code examples, so I won’t start with a basic “Hello World!” program (the way most introductory C# programming books do). Instead, I’ll dive right into the building blocks of C# programs, such as keywords, statements, blocks, and so on.

So jump in and hang on!

Dealing with Keywords

A keyword is a word that has special meaning defined by the C# programming language. In all, C# has 77 keywords. They’re listed in alphabetical order in Table 1-1.

Table 1-1. The C# Keywords

abstract	event	new	struct
as	explicit	null	switch
base	extern	object	this
bool	false	operator	throw
break	finally	out	true
byte	fixed	override	try
case	float	params	typeof
catch	for	private	uint
char	foreach	protected	ulong
checked	goto	public	unchecked
class	if	readonly	unsafe
const	implicit	ref	ushort
continue	in	return	using
decimal	int	sbyte	virtual
default	interface	sealed	volatile
delegate	internal	short	void
do	is	sizeof	while
double	lock	stackalloc
else	long	static
enum	namespace	string

Like everything else in C#, keywords are case-sensitive. Thus, if you type If instead of if or For instead of for, the compiler complains about ...