IsValid Method (CellFooter)
Checks whether the specified view row and column indexes are valid coordinates in the sheet's data model, and if so sets the row and column fields to the model row and column indexes.
Parameters
- viewrow
- Row index (in the view)
- viewcolumn
- Column index (in the view)
Return Value
True if view row and view column are defined in the data model for the sheet; otherwise, false