Names in C#

To name the variables of your program, you must follow strict rules. In fact, everything else in your program must have a name. C# uses a series of words, called keywords, for its internal use. This means that you must avoid naming your objects using one of these keywords. They are:

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

Besides these keywords, C# has other words that should be reserved only depending on how and where they are used. These are referred to as contextual keywords and they are:

get

partial

set

value

where

yield

Once you avoid these words, there are rules you must follow when naming your objects. On this site, here are the rules we will follow: The name must start with a letter or an underscore After the first letter or underscore, the name can have letters, digits, and/or underscores The name must not have any special characters other than the underscore The name cannot have a space Besides these rules, you can also create your own but that abide by the above. C# is case-sensitive. This means that the names Case, case, and CASE are completely different. For example, main is always written Main.