null (C# Reference)
The null keyword is a literal that represents a null reference, one that does not refer to any object. null is the default value of reference-type variables.
C# 2.0 introduces nullable types, which are data types that may be set to an undefined value. See Nullable Types (C# Programming Guide).
C# Language Specification
For more information, see the following sections in the C# Language Specification:
- 2.4.4.6 The null literal
See Also
Reference
C# Keywords
Literal Keywords (C# Reference)