Make sure you define a primary key in your MS-SQL tables.
Most often the cause is that the table does not have a primary key defined or there is at least no column in the table where the contents is all unique.After calling Post fields change their value in the db but that may not be detected by your dataset Actually, all the dbcomponents are thrown away now. Recreated the gui using regular components, made a middleware with objects, and handling the object to database transition - It sure was faster than messing with adonis... Some values may have been changed since it was last read. Sometimes editing my data in a grid, I get an error described above: "Row cannot be located for updating.Does anybody have a clue of why this is happening and how it can be easily solved ?