C#(ASP.NET)隐藏或显示Excel中指定列

今天写的一个方法,实现Excel指定列的隐藏和显示:

环境:VS2010,OFFICE 2010

代码:#region 隐藏和显示Excel中的一列
        /// <summary>
        /// Author:闵向阳
        /// 隐藏Excel中的一列
        /// </summary>
        /// <param name="fileName">Excel路径名</param>
        /// <param name="columnIndex">隐藏的是第几列数</param>
        /// <param name="flag">是否隐藏</param>
        public void HiddenColumn(string fileName,int columnIndex,bool flag)
        {
            Excel._Application xlapp;
            Excel.Workbook xlwbk;
            Excel.Worksheet xlwst;
            xlapp = new Excel.Application();
            //打开Excel
            xlwbk = xlapp.Workbooks.Open(fileName);
            //获得要操作的工作表
            xlwst = (Worksheet)xlwbk.Worksheets[1];
            //★获得要隐藏的列,并且隐藏
            xlwst.get_Range(xlwst.Cells[1,columnIndex], xlwst.Cells[xlwst.Rows.Count, columnIndex]).EntireColumn.Hidden = flag;
            //保存
            xlwbk.Save();
            //退出
            xlwbk.Close();
            xlapp.Quit();
            //释放多余的Excel进程
            System.Runtime.InteropServices.Marshal.ReleaseComObject(xlapp);
            xlapp = null;
        }
        #endregion