What is the most reliable way to determine which version of SharePoint is installed. Whether it is WSS or MOSS. If MOSS, whether it is standard or enterprise.
I want to programmatically detect the exact SharePoint version installed..
PS: I already have posted this question at SharePoint.SE but could not find a convincing answer.
You could try to use SPFarm.Local.BuildVersion or SPWebService.ContentService.Farm.BuildVersion (from this previous question) and to build a lookup table based on this: How to find the level of SharePoint you are running?
Another option is to read directly from ConfigDB database, on Versions table; you can find more information here.