Net 6 nullable not giving warning for all types-CodePudding

Using Net 6's <Nullable>enable</Nullable> I have the class:

public class File {
  public Int32 Id { get; set; }
  public Byte[] Content { get; set; }
  public DateTime Created { get; set; }
  public Guid Key { get; set; }
  public String Name { get; set; }
  
  public FileType FileType { get; set; }
}

Why do I get the warning

Non-nullable property '...' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

in all properties but not in:

Int32 Id
DateTime Created
Guid Key

CodePudding user response：

Nullable reference types only affect reference types. Value types can never be null and so there is no need to check or warn against them being null.