RowColChange PropertySee Also
Grid Control | AfterRowColChange Event | BeforeRowColChange Event

Applies To: Grid
Contains a value that identifies the type of cell movement made in a grid. Readonly at design and run-time.

Grid.RowColChange
Remarks
The value of RowColChange is 0 at opening and after refresh of a grid. You can query this property in AfterRowColChange and BeforeRowColChange events to determine the type of change that triggered the event, according to the following table.

Value Description
0 (default) No change.
1 Row change
2 Column change
3 Row and column change

По поводу полей. Если неизвестен алиас таблицы, такое бывает когда проектируешь класс,поступаешь так
local lcAlias
lcAlias = this.RecordSource
MessageBox(&lcAlias..MyField)