次のサンプルコードでは、このメンバを使用して、Columnオブジェクトのインデックスを返しています。
FarPoint.Win.Spread.Column col;
fpSpread1.ActiveSheet.Cells[0, 0].Text = "Alignment";
col = fpSpread1.ActiveSheet.Columns[0];
col.HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Right;
col.VerticalAlignment = FarPoint.Win.Spread.CellVerticalAlignment.Center;
col.Width = 120;
fpSpread1.ActiveSheet.Rows[0].Height = 60;
Dim col As FarPoint.Win.Spread.Column
Dim i, i1 As Integer
col = FpSpread1.ActiveSheet.Columns(0, 2)
i = col.Index
i1 = col.Index2
ListBox1.Items.AddRange(New Object() {i.ToString, i1.ToString})