Are nullable types reference types?

by

No, a nullable is a struct. What is happening is that the nullable struct has two values:

  1. The value of the data type (int for int?, DateTime for DateTime?, etc.).
  2. A boolean value which tells if the data type value has been set. (HasValue is the property.)

When you set the value of the data type, the struct changes HasValue to true.

Nullable types (C# Programming Guide)

More Related Contents:

  1. What is the difference between String and string in C#?
  2. How to create a new object instance from a Type
  3. What is the difference between String and string in C#?
  4. Convert String to Type in C# [duplicate]
  5. How to check if an object is nullable?
  6. What is the difference between Nullable.HasValue or Nullable != null?
  7. Generics in C#, using type of a variable as parameter [duplicate]
  8. Testing if object is of generic type in C#
  9. Nullable type is not a nullable type?
  10. .NET: Determine the type of “this” class in its static method
  11. What does “DateTime?” mean in C#?
  12. How to parse a string into a nullable int
  13. .NET Integer vs Int16?
  14. What are lifted operators?
  15. How to call generic method with a given Type object? [duplicate]
  16. Getting a System.Type from type’s partial name
  17. .NET : How do you get the Type of a null object?
  18. C# – how to determine whether a Type is a number
  19. Why GetType returns System.Int32 instead of Nullable? [duplicate]
  20. Determine if a type is static
  21. Invalid cast from ‘System.Int32’ to ‘System.Nullable`1[[System.Int32, mscorlib]]
  22. Optional return in C#.Net
  23. How to switch between “possible” type of an object? [duplicate]
  24. How is the boxing/unboxing behavior of Nullable possible?
  25. Checking if an object is a number
  26. Boxing / Unboxing Nullable Types – Why this implementation?
  27. What’s the difference between ‘int?’ and ‘int’ in C#?
  28. Why doesn’t the conditional operator correctly allow the use of “null” for assignment to nullable types? [duplicate]
  29. how are nullable types implemented under the hood in .net?
  30. What is the “base class” for numeric value types?

Leave a Comment