Information about the .cls (cls) file type

This is one of three possibilities that we have on file for the .cls file extension, follow this link to view all three possibilities.

Below is all the information we have available on file about the .cls (cls) file type.

VB 6 class file. File contains the source file definition of a VB 6 class (possibly also used by VB 4 and VB 5).

Where this is available we would like to include file format information on .cls files, as well as information on how to view or open files of type .cls. If you know of any information which we have missed then please let us know.