Phone:
(698) 574-4777
Address:
45454, Willemstad, Curacao, 16100, Netherlands Antilles
The errors you’re encountering occur because the LINQ query references ph, ua, and up outside their declared scope. In LINQ queries with Group Join, variables like ph, ua, and up are defined only within the From ... In scope that follows DefaultIfEmpty().
Here’s the corrected version of your query: