FarPoint.Win.Spread.Model.DefaultSheetSelectionModel defselModel = new FarPoint.Win.Spread.Model.DefaultSheetSelectionModel();
fpSpread1.ActiveSheet.Models.Selection = defselModel;
defselModel.AddSelection(0, 0, 3, 3);
bool b;
b = defselModel.IsEmpty();
listBox1.Items.Add(b.ToString());
Dim defselModel As New FarPoint.Win.Spread.Model.DefaultSheetSelectionModel()
FpSpread1.ActiveSheet.Models.Selection = defselModel
defselModel.AddSelection(0, 0, 3, 3)
Dim b As Boolean
b = defselModel.IsEmpty()
ListBox1.Items.Add(b.ToString())