I\'m generating business objects from this schema using Enterprise Architect.
The schema has the following enumeration specification:
A C# identifier must start with an underscore, a character in the Unicode class Lu, Ll, Lt, Lm, Lo, or Nl, or an escape for one of those. All other characters must be from Unicode class Lu, Ll, Lt, Lm, Lo, Nl, Mn, Mc, Nd, Pc or Cf, or an escape for one of those.
Hyphen-minus is of category Pd.
If C# did allow it, you still couldn't use it on a public identifier if you needed to be CLS compliant, as it wouldn't fit its rules either.
This is just as well, as how are you meant to distinguish CD-ROM
meaning a particular item in the enum
from CD-ROM
meaning to apply the -
operator with CD
as the left hand operand and ROM
as the right hand operand?
If that list of possibilities is hard-coded, I'd just remove the hyphen-minus and have CDROM
as the label. If it's not hard-coded I'd use a dictionary, as it's resiliant in the face of even more cases where something can't be an identifier.