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02 December 2007
LINQ: Sequence contains no elements. InvalidOperationException when calling Single

If you call Single to get an object from your DB and the object doesn't exist you will get an InvalidOperationException. return this .DataContext.MemberDaos.Single(m => m.MemberID == id); Instead of Single, use SingleOrDefault, which will return null Read More...

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Filed under: solution, c#, linq

 

01 December 2007
LINQ: "Add" renamed to "InsertOnSubmit"

If you are using LINQ to insert data with RTM bits you won't find the Add method on the DataContext post Beta2. Use the InsertOnSubmit method instead. Read More...

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Filed under: solution, c#, linq