この例では、SheetViewオブジェクトのRowAxisModelの先頭行のサイズを返します。
FarPoint.Web.Spread.SheetView sv = FpSpread1.ActiveSheetView;
intsize = sv.RowAxisModel.GetSize(0);
ListBox1.Items.Add(size.ToString());
Dim sv As FarPoint.Web.Spread.SheetView
Dim size As Integer
sv = FpSpread1.ActiveSheetView
size = sv.RowAxisModel.GetSize(0)
ListBox1.Items.Add(size)