I'm a bit new to CRM C# Developement, but I have successfully run the CrmSvcUtil.exe utility to generate the C# file containing all of our Entity classes and used that file in code.
Some of the SDK sample code includes a OptionSet.cs file that is also generated and contains option set enumerations for the default CRM entities.
My question is, how is this file generated as we need one that includes our custom option sets (enumerations).