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C# Keywords 

Keywords are predefined reserved identifiers that have special meanings to the compiler. They cannot be used as identifiers in your program unless they include @ as a prefix. For example, @if is a legal identifier but if is not because it is a keyword.

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

 

Contextual Keywords

get

partial

set

value

where

yield

See Also

Concepts

C# Programming Guide

Other Resources

C# Reference