A keyword is an identifier-like sequence of characters that is reserved, and cannot be used as an identifier except when prefaced by the @ character.

abstract as base bool break

byte case catch char checked

class const continue decimal default

delegate do double else enum

event explicit extern false finally

fixed float for foreach goto

if implicit in int interface

internal is lock long namespace

new null object operator out

override params private protected public

readonly ref return sbyte sealed

short sizeof stackalloc static string

struct switch this throw true

try typeof uint ulong unchecked

unsafe ushort using virtual void

volatile while

In some places in the grammar, specific identifiers have special meaning, but are not keywords. [Note: For example, within a property declaration, the "get" and "set" identifiers have special meaning (17.6.2). An identifier other than get or set is never permitted in these locations, so this use does not conflict with a use of these words as identifiers. end note]