C# - keywords

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C# keywords

In C#, keywords are reserved words that have a special meaning and cannot be used as identifiers (such as variable or method names). if we want to use the keywords as identifiers, we may prefix the keyword with @ character.

Example

@if is a valid identifier, but if isn't because if is a keyword.

public class @class
{
public static int salary { get; set; }
}
@class.salary = 100000;

Reserved Keywords in C#

The following are the keywords in C# language to define the syntax and structure.

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

Contextual keywords

A contextual keyword is used to provide a specific meaning in the code, but it isn't a reserved word in C#. Some contextual keywords, such as partial and where, have special meanings in two or more contexts.

public class @class
{
  public static int var{ get; set; }
  public static int var{ get; set; }
}

The above example var is a contextual keyword. This is a reserver keyword.

The following are the some contextual keywords in C# language.

var	group	ascending	descending	dynamic	from	get
global	alias	into	join	let	select	set
scoped	nameof	remove	join	record	remove	required
notnull	nuint	on	or	orderby	partial (type)	partial (method)

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C# - keywords

Reserved Keywords in C#

Contextual keywords

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