Spread 可以设置图形类单元格显示模式，下面我们就通过 ComboBoxCellType 展示仅在活跃行显示ComboBoxCellType 单元格类型。
效果截图：

参考代码：
 
FarPoint.Win.Spread.CellType.ComboBoxCellType comboBoxType = new FarPoint.Win.Spread.CellType.ComboBoxCellType();

            string[] items = new string[] { "a","b","c","d","e"};

            comboBoxType.Items = items;



            this.fpSpread1.Sheets[0].Columns[0].CellType = comboBoxType;

            this.fpSpread1.ButtonDrawMode = FarPoint.Win.Spread.ButtonDrawModes.CurrentRow;

复制代码
Demo 下载：
测试环境：VS 2010 && Spread for WinForm 5.0