Question

Pretty simple question: When i have a persistable object, it usually has a property called ID (for abstract classes).

So .. is the naming convention ID or Id?

eg.

public int ID { get; set; } 

or

public int Id { get; set; } 

cheers 🙂

PS. This is for .NET btw. FXCop conformat would be a bonus.

Answer 1

I usually go with Identifier. If I really want to keep it short (as part of a longer identifier, for example), I use Id, unless it’s a parameter or private member.

The .NET Framework Naming Guidelines say this:

An acronym is a word that is formed from the letters of words in a term or phrase. For example, HTML is an acronym for Hypertext Markup Language. You should include acronyms in identifiers only when they are widely known and well understood. Acronyms differ from abbreviations in that an abbreviation shortens a single word. For example, ID is an abbreviation for identifier. In general, library names should not use abbreviations.

The two abbreviations that can be used in identifiers are ID and OK. In Pascal-cased identifiers they should appear as Id, and Ok. If used as the first word in a camel-cased identifier, they should appear as id and ok, respectively.