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error in LINQ query "Object reference not set to an instance of an object"

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Posted on by Community Member Microsoft Employee

this query gives error:

 Contact party =
                       (from c in myContext.cav_configurationSet
                        join p in myContext.ContactSet.DefaultIfEmpty()
                        on c.mm_name equals p.FullName
                        where c.mm_name == "TransactionPerformedBy" &&
                        c.StateCode == cav_configurationState.Active
                        select p).FirstOrDefault().ToEntity<Contact>();

I have checked it is due to there is no record or match for c.mm_name. please tell me how to fix it ?

thanks

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Haansi 1,431 on at

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RE: error in LINQ query "Object reference not set to an instance of an object"

Not having data do not through the error. Error probably is happening when you are using methods on null. Consider checking null before doing other operations.