C# Keywords

C# > Keywords

Keywords are reserved identifiers used by compiler. 

• cannot be used as identifiers in your program unless they include @ as a prefix (@then is a valid identifier)
• contextual keywords have special meaning only in a limited program context and can be used as identifiers outside that context

Literal keywords

• null
• default

Access keywords

• base
• this

Access modifiers

• public
• protected
• internal
• abstract

Operator

• typeof

Method

• ref

Contextual

• yield