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Question

I have this query and I get the error in this function:

var accounts = from account in context.Accounts
               from guranteer in account.Gurantors
           


        

Answer 1

This is extracted from a real world scenario:

• Code works well in a Stage environment with MultipleActiveResultSets is set in the connection string
• Code published to Production environment without MultipleActiveResultSets=true
• So many pages/calls work while a single one is failing
• Looking closer at the call, there is an unnecessary call made to the db and needs to be removed
• Set MultipleActiveResultSets=true in Production and publish cleaned up code, everything works well and, efficiently

In conclusion, without forgetting about MultipleActiveResultSets, the code might have run for a long time before discovering a redundant db call that could be very costly, and I suggest not to fully depend on setting the MultipleActiveResultSets attribute but also find out why the code needs it where it failed.