ADO.NET :: How To Verify A Record Was Returned Before Trying To Use
Dec 12, 2010
[Code]....
so I have code like above, I need to assure a record was actually returned before trying to use it... I assumed I could test for null, but that doesn't appear to work.
I tried: if (task != null) {yada yada yada}
but if I put an ID that doesn't exist in my querystring it throws an exception 'sequence contains no elements'. I realize I can catch the exception but I want to understand how I should be checking for a returned record. The .Single method intellisense says it returns exactly one record or throws an exception if more than one is found... is it also throwing the exception when zero are found I'm not sure if the issue is my check for null or that line that calls .single itself? Now I'm guessing I'm supposed to just catch the exception on the line that's calling .Single... yes?
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