Use the below code to get the Dynamics CRM Version number using CRM SDK and Console Application C#.
RetrieveVersionRequest request = new RetrieveVersionRequest();
RetrieveVersionResponse response = (RetrieveVersionResponse)organizationService.Execute(request);Version version = new Version(response.Version);
This feature was released in Microsoft Dynamics CRM 2015 Online Update 1(v7.1) and will work perfectly in the below CRM versionsDynamics 365 (online), Dynamics 365 (on-premises), Dynamics CRM 2016,
Dynamics CRM Online