Public Overridable ReadOnly Default Property Item( _
   ByVal index As Integer _
) As CellRange

Dim instance As BaseSheetSelectionModel
Dim index As Integer
Dim value As CellRange
 
value = instance.Item(index)

public virtual CellRange this[ 
   int index
]; {get;}

private void menuItem1_Click(object sender, System.EventArgs e)
{
FarPoint.Win.Spread.Model.BaseSheetSelectionModel selModel;
FarPoint.Win.Spread.Model.CellRange cr;
selModel = (FarPoint.Win.Spread.Model.BaseSheetSelectionModel)fpSpread1.ActiveSheet.Models.Selection;
selModel.SetSelection(0, 0, 3, 3);
cr = selModel[0];
listBox1.Items.Add(cr.ToString());
}

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
Dim cr As FarPoint.Win.Spread.Model.CellRange
selModel = FpSpread1.ActiveSheet.Models.Selection
selModel.SetSelection(0, 0, 3, 3)
cr = selModel.Item(0)
ListBox1.Items.Add(cr.ToString())
End Sub