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C# Reserve Keyword

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C# has reserved keywords that have specific meanings and cannot be used as identifiers (like variable or method names) in your code because they are already used by the C# language. 

 

Here's a list of reserved keywords in C# group by categories.

 

Modifier Keywords

abstract async const event extern new override 
partial readonly sealed static unsafe virtual volatile

 

Access Modifier Keywords

public private internal protected

 

Method Parameter Keywords

params ref out

 

Statement Keywords

if else switch case do for foreach in while break continue
default goto return yield throw try catch finally checked
unchecked fixed lock

 

Access Keywords

base this

 

Operator Keywords

as await is new sizeof typeof stackalloc
checked unchecked

 

Namespace Keywords

using . operator :: operator extern alias

 

Literal Keywords

null false true value void

 

Type Keywords

bool byte char class decimal double enum float
int long sbyte short string struct uint ulong ushort

 

Query Keywords

from where select group into orderby join let
in on equals by ascending descending

 

Contextual Keyword

add var dynamic global set value
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