Anyone know the rule for naming fields with the abbreviation "ID?"

I notice that MS is inconsistent, they have "PlatformID" and "ApplicationId."

I thought the rule was is the abbreviation was 3 characters or more, only the first letter is capitalized. Like Guid instead of GUID?

There are no strict rules, but more conventions.
You can follow them or not.
The only convention that is followed, with as far as I know, no exception, is that the name of an interface class starts with a capital I.

Edited 5 Years Ago by ddanbe: typo

There are no strict rules, but more conventions.
You can follow them or not.
The only convention that is followed, with as far as I know, no exception, is that the name of an interface class starts with a capital I.

True. I guess I was asking what the popular convention is?

True. I guess I was asking what the popular convention is?

There are a variety of conventions, none of which is overwhelmingly popular over all the others... since we're talking about C#, you could use Microsoft's official guidelines. Wikipedia has a more general discussion of various styles.

With respect to the inconsistency you mention, the Microsoft standard says:

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.

By their own standard, PlatformID is incorrect, but I prefer it over PlatformId because the latter always reminds me of the id monster.

Edited 5 Years Ago by gusano79: typo

This question has already been answered. Start a new discussion instead.