Operator Keywords (C# Reference)


Updated: July 20, 2015

For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.

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

  • 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:

C# Reference
C# Programming Guide
C# Keywords
C# Operators