The NextRow method retrieves the next row of data from the database into internal buffers.

This method handles break processing before data is loaded into target variables by the Load method.

If the NextRow method is not successful, it returns -1. If it is successful, it returns the break level or zero for no breaks applicable. If no breaks have been added, only zero or -1 are returned. To determine whether lack of success indicates an error or no more rows in the query, check the value of the ErrorNo attribute.