Public Overridable Sub AddSelection( _
   ByVal row As Integer, _
   ByVal column As Integer, _
   ByVal rowCount As Integer, _
   ByVal columnCount As Integer _
) 

Dim instance As BaseSheetSelectionModel
Dim row As Integer
Dim column As Integer
Dim rowCount As Integer
Dim columnCount As Integer
 
instance.AddSelection(row, column, rowCount, columnCount)

public virtual void AddSelection( 
   int row,
   int column,
   int rowCount,
   int columnCount
)

private void menuItem1_Click(object sender, System.EventArgs e)
{
FarPoint.Win.Spread.Model.BaseSheetSelectionModel selModel;
selModel = (FarPoint.Win.Spread.Model.BaseSheetSelectionModel)fpSpread1.ActiveSheet.Models.Selection;
selModel.AddSelection(0,0,3,4);
}

private void menuItem2_Click(object sender, System.EventArgs e)
{
FarPoint.Win.Spread.Model.BaseSheetSelectionModel selModel;
selModel = (FarPoint.Win.Spread.Model.BaseSheetSelectionModel)fpSpread1.ActiveSheet.Models.Selection;
selModel.ExtendSelection(4, 5);
}

Private Sub MenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem1.Click
Dim selModel As FarPoint.Win.Spread.Model.BaseSheetSelectionModel
selModel = FpSpread1.ActiveSheet.Models.Selection
selModel.AddSelection(0, 0, 3, 4)
End Sub

Private Sub MenuItem2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem2.Click
Dim selModel As FarPoint.Win.Spread.Model.BaseSheetSelectionModel
selModel = FpSpread1.ActiveSheet.Models.Selection
selModel.ExtendSelection(4, 5)
End Sub