Operator Keywords (C# Reference)

Used to perform miscellaneous actions such as creating objects, checking the run-time type of an object, obtaining the size of a type, and other actions. This section introduces the following keywords:

  • as Converts an object to a compatible type.

  • await Suspends an async method until an awaited task is completed.

  • is Checks the run-time type of an object.

  • new

  • nameof Obtains the simple (unqualified) string name of a variable, type, or member.

  • sizeof Obtains the size of a type.

  • typeof Obtains the System.Type object for a type.

  • true

    • true Operator Returns the boolean value true to indicate true and returns false otherwise.

    • true Literal Represents the boolean value true.

  • false

    • false Operator Returns the Boolean value true to indicate false and returns false otherwise.

    • false Literal Represents the boolean value false.

  • stackalloc Allocates a block of memory on the stack.

The following keywords, which can be used as operators and as statements, are covered in the Statements section:

See Also