title: Nullable GUID
body: <p>In my database, in one of the table I have a GUID column with allow nulls. I have a method  with a Guid? parameter that inserts a new data row in the table. However when I say myNewRow.myGuidColumn = myGuid I get the following error: "Cannot implicitly convert type 'System.Guid?' to 'System.Guid'." </p>