この例では、アクティブシートから先頭列を削除します。
FarPoint.Web.Spread.Column col;
fpSpread1.ActiveSheetView.ColumnCount = 3;
col = fpSpread1.ActiveSheetView.Columns[0];
col.Remove();
Dim col As FarPoint.Web.Spread.Column
FpSpread1.ActiveSheetView.ColumnCount = 3
col = FpSpread1.ActiveSheetView.Columns(0)
col.Remove()