void __fastcall Next();
Moves to the next record in the dataset.
Fetches the next record and makes it the active record.
If the dataset is not unidirectional, fetches any additional records required for display, such as those needed to fill out a grid control.
Sets the Eof property to true if the last record in the dataset was already active.
Broadcasts the record change so that data controls and linked detail sets can update.
Note: TDataSet uses internal, protected methods to move the active record and to fetch additional records required for display. In TDataSet, these internal methods are empty stubs. Descendant classes implement these methods to enable the Next method to work.