用NPOI操作EXCEL－锁定列CreateFreezePane()

 public void ExportPermissionRoleData(string search, int roleStatus)
        {
            var workbook = new HSSFWorkbook();
            string random = DateTime.Now.ToString("yyyyMMddHHmmss") + new Random().Next(100);
            string fileName = HttpUtility.UrlEncode("sheet" + random + ".xls", System.Text.Encoding.UTF8);

            #region 表头
            ISheet worksheet = workbook.CreateSheet("sheet");
            IRow headerRow = worksheet.CreateRow(0);
            ICell cell = headerRow.CreateCell(0);
            cell.SetCellValue("test1");
            ICell cellType = headerRow.CreateCell(1);
            cellType.SetCellValue("test2");
            ICell cellOper = headerRow.CreateCell(2);
            cellOper.SetCellValue("test3");
            //设置颜色
            ICellStyle style = workbook.CreateCellStyle();
            style.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.Yellow.Index;
            style.FillPattern = FillPattern.SolidForeground;
            cell.CellStyle = style;
            cellType.CellStyle = style;
            cellOper.CellStyle = style;
            //设置宽度
            worksheet.SetColumnWidth(0, 13 * 256);
            worksheet.SetColumnWidth(1, 20 * 256);
            worksheet.SetColumnWidth(2, 30*256);
            //冻结前3列
            worksheet.CreateFreezePane(3, 0, 3, 0);
            //动态加载所有的角色名称,创建时间倒序排列
            var predicate = PredicateBuilder.True<Role>();
            if (!string.IsNullOrWhiteSpace(search))
            {
                predicate = predicate.And(r => r.Name.ToLower().Contains(search) || (r.Description != null && r.Description.ToLower().Contains(search)));
            }
            if (roleStatus != -1)
            {
                bool status = roleStatus ==1? true : false;
                predicate = predicate.And(c => c.Status == status);
            }
            var roleList = RoleService.Find(predicate).OrderByDescending(t => t.CreateDateTime).ToList();
            var roleCount = roleList.Count();
            int headIndex = 3;
            for (int head = 0; head < roleCount; head++)
            {
                //headerRow.CreateCell(headIndex + head).SetCellValue(roleList[head].Name);
                ICell cellRole = headerRow.CreateCell(headIndex + head);
                cellRole.SetCellValue(roleList[head].Name);
                //设置颜色
                ICellStyle styleRole = workbook.CreateCellStyle();
                styleRole.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.LightGreen.Index;
                styleRole.FillPattern = FillPattern.SolidForeground;
                cellRole.CellStyle = styleRole;
            }
            #endregion

            #region 填充表头数据
            int rowIndex = 0;
            var configService = DependencyResolver.Current.GetService<IConfigAppService>();
            var configs = configService.GetOnlyPermissionConfig().ToAllPermissionList();
            int bodyCount = configs.Count;
            for (int body = 0; body < bodyCount; body++)
            {
                try
                {
                    IRow dataRow = worksheet.CreateRow(rowIndex + 1);
                    dataRow.CreateCell(0).SetCellValue(configs[body].Moudle);
                    dataRow.CreateCell(1).SetCellValue(configs[body].Type);
                    dataRow.CreateCell(2).SetCellValue(configs[body].Name);

                    //根据角色表权限Code找对应的权限Code
                    //匹配相应的【权限行】 对应的 【角色列】
                    for (int head = 0; head < roleCount; head++)
                    {
                        var RoleCodes = roleList[head].PermissionCodes.Split(‘,‘);
                        foreach (var roleCode in RoleCodes)
                        {
                            if (roleCode == configs[body].Code)
                            {
                                dataRow.CreateCell(headIndex + head).SetCellValue("√");
                            }
                        }
                    }
                    rowIndex++;
                }
                catch (Exception ex)
                {
                    throw new OnlyException("导出出错！详细信息："+ex.Message);
                }
            }
            #endregion

            using (MemoryStream ms = new MemoryStream())
            {
                workbook.Write(ms);
                ms.Flush();
                ms.Position = 0;
                Response.Charset = "UTF-8";
                Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);
                Response.ContentType = "application/ms-excel";
                ms.WriteTo(Response.OutputStream);
            }
        }