ShuangHui_API/codegit/CallCenterCo.../CallCenter.U.../NPOI/NPOIHelper.cs


using System;
using System.Data;
using System.IO;
using System.Text;
using System.Web;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.XSSF.UserModel;
using CallCenterApi.DB;
using System.Collections.Generic;

namespace CallCenter.Utility
{
    public class NPOIHelper
    {
        private string _title;
        private string _sheetName;
        private string _filePath;

        /// <summary>
        /// 导出到Excel
        /// </summary>
        /// <param name="table"></param>
        /// <returns></returns>
        public bool ToExcel(DataTable table, string[] columns = null)
        {
            FileStream fs = new FileStream(this._filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);
            IWorkbook workBook = new HSSFWorkbook();
            if (string.IsNullOrWhiteSpace(this._sheetName))
            {
                this._sheetName = "sheet1";
            }

            ISheet sheet = workBook.CreateSheet(this._sheetName);

            //处理表格标题
            IRow row = sheet.CreateRow(0);
            row.CreateCell(0).SetCellValue(this._title);
            sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, table.Columns.Count - 1));
            row.Height = 500;

            ICellStyle cellStyle = workBook.CreateCellStyle();
            IFont font = workBook.CreateFont();
            font.FontName = "微软雅黑";
            font.FontHeightInPoints = 17;
            cellStyle.SetFont(font);
            cellStyle.VerticalAlignment = VerticalAlignment.Center;
            cellStyle.Alignment = HorizontalAlignment.Center;
            row.Cells[0].CellStyle = cellStyle;

            //处理表格列头
            row = sheet.CreateRow(1);
            if (columns == null)
            {
                for (int i = 0; i < table.Columns.Count; i++)
                {
                    row.CreateCell(i).SetCellValue(table.Columns[i].ColumnName);
                    row.Height = 350;
                    sheet.AutoSizeColumn(i);
                }
            }
            else
            {
                for (int i = 0; i < columns.Length; i++)
                {
                    row.CreateCell(i).SetCellValue(columns[i]);
                    row.Height = 350;
                    sheet.AutoSizeColumn(i);
                }
            }




            //处理数据内容
            for (int i = 0; i < table.Rows.Count; i++)
            {
                row = sheet.CreateRow(2 + i);
                row.Height = 250;
                for (int j = 0; j < table.Columns.Count; j++)
                {
                    row.CreateCell(j).SetCellValue(table.Rows[i][j].ToString());
                    sheet.SetColumnWidth(j, 256 * 15);
                }
            }

            //写入数据流
            workBook.Write(fs);
            fs.Flush();
            fs.Close();

            return true;
        }

        /// <summary>
        /// 导出到Excel
        /// </summary>
        /// <param name="table"></param>
        /// <param name="title"></param>
        /// <param name="sheetName">空字符串或null的话默认sheet1</param>
        /// <param name="columns">自定义表格列头，默认null</param>
        /// <returns></returns>
        public bool ToExcel(DataTable table, string title, string sheetName, string filePath, string[] columns = null)
        {
            this._title = title;
            this._sheetName = sheetName;
            this._filePath = filePath;
            return ToExcel(table, columns);
        }

        /// <summary>
        /// 弹出下载框导出excel
        /// </summary>
        /// <param name="Name"></param>
        /// <param name="dt"></param>
        /// <returns></returns>
        public string ExportToExcel(string Name, DataTable dt, string[] cols = null,int iswork=0)
        {
            try
            {
                //if (dt.Rows.Count > 0)
                //{
                HSSFWorkbook workbook = new HSSFWorkbook();
                ISheet sheet = workbook.CreateSheet("Sheet1");

                ICellStyle HeadercellStyle = workbook.CreateCellStyle();
                HeadercellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.Alignment = HorizontalAlignment.Center;
                HeadercellStyle.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.SkyBlue.Index;
                HeadercellStyle.FillPattern = FillPattern.SolidForeground;
                HeadercellStyle.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.SkyBlue.Index;
                //字体
               
                if (iswork>0)
                {
                   IDataFormat format = workbook.CreateDataFormat();
                   HeadercellStyle.DataFormat = format.GetFormat("[DbNum2][$-804]0");
                }
                NPOI.SS.UserModel.IFont headerfont = workbook.CreateFont();
                headerfont.Boldweight = (short)FontBoldWeight.Bold;
                headerfont.FontHeightInPoints = 12;
                HeadercellStyle.SetFont(headerfont);
                //用column name 作为列名
                int icolIndex = 0;
                IRow headerRow = sheet.CreateRow(0);
                if (cols == null || (cols != null && cols.Length == 0))
                {
                    foreach (DataColumn dc in dt.Columns)
                    {
                        ICell cell = headerRow.CreateCell(icolIndex);
                        cell.SetCellValue(dc.ColumnName);
                        cell.CellStyle = HeadercellStyle;
                        icolIndex++;
                    }
                }
                else
                {
                    foreach (string dc in cols)
                    {
                        ICell cell = headerRow.CreateCell(icolIndex);
                        cell.SetCellValue(dc);
                        cell.CellStyle = HeadercellStyle;
                        icolIndex++;
                    }
                }
                ICellStyle cellStyle = workbook.CreateCellStyle();

                //为避免日期格式被Excel自动替换，所以设定 format 为 『@』 表示一率当成text來看
                cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("@");
                cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;


                NPOI.SS.UserModel.IFont cellfont = workbook.CreateFont();
                cellfont.Boldweight = (short)FontBoldWeight.Normal;
                cellStyle.SetFont(cellfont);

                //建立内容行
                int iRowIndex = 0;
                foreach (DataRow dr in dt.Rows)
                {
                    int iCellIndex = 0;
                    IRow irow = sheet.CreateRow(iRowIndex + 1);
                    for (int i = 0; i < dt.Columns.Count; i++)
                    {
                        string strsj = string.Empty;
                        if (dr[i] != null)
                        {
                            strsj = dr[i].ToString();
                        }
                        ICell cell = irow.CreateCell(iCellIndex);
                        cell.SetCellValue(strsj);
                        cell.CellStyle = cellStyle;
                        iCellIndex++;
                    }
                    iRowIndex++;
                }

                //自适应列宽度
                for (int i = 0; i < icolIndex; i++)
                {
                    sheet.AutoSizeColumn(i);
                }

                using (MemoryStream ms = new MemoryStream())
                {
                    workbook.Write(ms);

                    HttpContext curContext = HttpContext.Current;


                    // 设置编码和附件格式
                    curContext.Response.ContentType = "application/vnd.ms-excel";
                    curContext.Response.ContentEncoding = Encoding.UTF8;
                    curContext.Response.Charset = "";
                    curContext.Response.AppendHeader("Content-Disposition",
                        "attachment;filename=" + HttpUtility.UrlEncode(Name + ".xls", Encoding.UTF8));

                    curContext.Response.BinaryWrite(ms.GetBuffer());

                    workbook = null;
                    ms.Close();
                    ms.Dispose();

                    curContext.Response.End();
                }
                //}
                return "";
            }
            catch
            {
                return "导出失败！";
            }
        }

        /// <summary>
        /// 合并单元格
        /// </summary>
        /// <param name="sheet">要合并单元格所在的sheet</param>
        /// <param name="rowstart">开始行的索引</param>
        /// <param name="rowend">结束行的索引</param>
        /// <param name="colstart">开始列的索引</param>
        /// <param name="colend">结束列的索引</param>
        public static void SetCellRangeAddress(ISheet sheet, int rowstart, int rowend, int colstart, int colend)
        {
            CellRangeAddress cellRangeAddress = new CellRangeAddress(rowstart, rowend, colstart, colend);
            sheet.AddMergedRegion(cellRangeAddress);
        }

        /// <summary>
        /// 工单类型弹出下载框导出excel
        /// </summary>
        /// <param name="Name"></param>
        /// <param name="dt"></param>
        /// <param name="typeclass">仪器或试剂</param>
        /// <returns></returns>
        public string ExportToExcelForGDLX(string Name, DataTable dt, string typeclass, List<string> colnames, List<int> erows, List<string> secolnames)
        {
            try
            {
                HSSFWorkbook workbook = new HSSFWorkbook();
                ISheet sheet = workbook.CreateSheet("Sheet1");

                ICellStyle HeadercellStyle = workbook.CreateCellStyle();
                HeadercellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
                HeadercellStyle.Alignment = HorizontalAlignment.Center;
                HeadercellStyle.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.SkyBlue.Index;
                HeadercellStyle.FillPattern = FillPattern.SolidForeground;
                HeadercellStyle.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.SkyBlue.Index;

                //字体
                NPOI.SS.UserModel.IFont headerfont = workbook.CreateFont();
                headerfont.Boldweight = (short)FontBoldWeight.Bold;
                headerfont.FontHeightInPoints = 12;
                HeadercellStyle.SetFont(headerfont);


                //用column name 作为列名
                int icolIndex = 0;
                IRow headerRow = sheet.CreateRow(0);
                
                for (int i = 0; i < colnames.Count; i++)
                {
                    ICell cell = headerRow.CreateCell(i);
                    cell.SetCellValue(colnames[i]);
                    cell.CellStyle = HeadercellStyle;
                    //SetCellRangeAddress(sheet, 0, 0, erows[i * 2], erows[i * 2 + 1]);
                }
                
                for (int k = 0; k < erows.Count / 2; k++)
                {
                    SetCellRangeAddress(sheet, 0, 0, erows[k * 2], erows[k * 2 + 1]);
                }
                //添加第二行标题
                IRow SecRow = sheet.CreateRow(1);
                for (int i = 0; i < secolnames.Count; i++)
                {
                    ICell cell = SecRow.CreateCell(i);
                    cell.SetCellValue(secolnames[i].ToString());
                }

                ICellStyle cellStyle = workbook.CreateCellStyle();

                //为避免日期格式被Excel自动替换，所以设定 format 为 『@』 表示一率当成text來看
                cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("@");
                cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;


                NPOI.SS.UserModel.IFont cellfont = workbook.CreateFont();
                cellfont.Boldweight = (short)FontBoldWeight.Normal;
                cellStyle.SetFont(cellfont);

                //建立内容行
                int iRowIndex = 0;
                foreach (DataRow dr in dt.Rows)
                {
                    int iCellIndex = 0;
                    IRow irow = sheet.CreateRow(iRowIndex + 2);
                    for (int i = 0; i < dt.Columns.Count; i++)
                    {
                        string strsj = string.Empty;
                        if (dr[i] != null)
                        {
                            strsj = dr[i].ToString();
                        }
                        ICell cell = irow.CreateCell(iCellIndex);
                        cell.SetCellValue(strsj);
                        cell.CellStyle = cellStyle;
                        iCellIndex++;
                    }
                    iRowIndex++;
                }
                //自适应列宽度
                for (int i = 0; i < icolIndex; i++)
                {
                    sheet.AutoSizeColumn(i);
                }

                using (MemoryStream ms = new MemoryStream())
                {
                    workbook.Write(ms);

                    HttpContext curContext = HttpContext.Current;


                    // 设置编码和附件格式
                    curContext.Response.ContentType = "application/vnd.ms-excel";
                    curContext.Response.ContentEncoding = Encoding.UTF8;
                    curContext.Response.Charset = "";
                    curContext.Response.AppendHeader("Content-Disposition",
                        "attachment;filename=" + HttpUtility.UrlEncode(Name + ".xls", Encoding.UTF8));

                    curContext.Response.BinaryWrite(ms.GetBuffer());

                    workbook = null;
                    ms.Close();
                    ms.Dispose();

                    curContext.Response.End();
                }
                
                return "";
            }
            catch (Exception e)
            {
                return "导出失败！" + e.Message;
            }
        }

        /// <summary>
        /// 导入excel转换为datatable
        /// </summary>
        /// <param name="upfile"></param>
        /// <param name="headrow"></param>
        /// <returns></returns>
        public DataTable ExcelToTable(HttpPostedFile upfile, int headrow)
        {
            DataTable dt = new DataTable();

            IWorkbook workbook = null;

            Stream stream = upfile.InputStream;

            string suffix = upfile.FileName.Substring(upfile.FileName.LastIndexOf(".") + 1).ToLower();
            if (suffix == "xlsx") // 2007版本
            {
                workbook = new XSSFWorkbook(stream);
            }
            else if (suffix == "xls") // 2003版本
            {
                workbook = new HSSFWorkbook(stream);
            }

            //获取excel的第一个sheet
            ISheet sheet = workbook.GetSheetAt(0);

            //获取sheet的第一行
            IRow headerRow = sheet.GetRow(headrow);

            //一行最后一个方格的编号 即总的列数
            int cellCount = headerRow.LastCellNum;
            //最后一列的标号  即总的行数
            int rowCount = sheet.LastRowNum;
            //列名
            for (int i = 0; i < cellCount; i++)
            {
                dt.Columns.Add(headerRow.GetCell(i).ToString());
            }

            for (int i = (sheet.FirstRowNum + headrow + 1); i <= sheet.LastRowNum; i++)
            {
                DataRow dr = dt.NewRow();

                IRow row = sheet.GetRow(i);
                for (int j = row.FirstCellNum; j < cellCount; j++)
                {
                    if (row.GetCell(j) != null)
                    {
                        dr[j] = row.GetCell(j).ToString();
                    }
                }

                dt.Rows.Add(dr);
            }

            sheet = null;
            workbook = null;

            return dt;
        }

        /// <summary>
        /// 导入excel转换为datatable
        /// </summary>
        /// <param name="upfile"></param>
        /// <param name="headrow"></param>
        /// <returns></returns>
        public DataTable ExcelToTable(string fileName, int headrow)
        {
            DataTable dt = new DataTable();

            IWorkbook workbook = null;

            Stream stream = new FileStream(fileName, FileMode.OpenOrCreate);

            string suffix = fileName.Substring(fileName.LastIndexOf(".") + 1).ToLower();
            if (suffix == "xlsx") // 2007版本
            {
                workbook = new XSSFWorkbook(stream);
            }
            else if (suffix == "xls") // 2003版本
            {
                workbook = new HSSFWorkbook(stream);
            }

            //获取excel的第一个sheet
            ISheet sheet = workbook.GetSheetAt(0);

            //获取sheet的第一行
            IRow headerRow = sheet.GetRow(headrow);

            //一行最后一个方格的编号 即总的列数
            int cellCount = headerRow.LastCellNum;
            //最后一列的标号  即总的行数
            int rowCount = sheet.LastRowNum;
            //列名
            for (int i = 0; i < cellCount; i++)
            {
                dt.Columns.Add(headerRow.GetCell(i).ToString());
            }

            for (int i = (sheet.FirstRowNum + headrow + 1); i <= sheet.LastRowNum; i++)
            {
                DataRow dr = dt.NewRow();

                IRow row = sheet.GetRow(i);
                for (int j = row.FirstCellNum; j < cellCount; j++)
                {
                    if (row.GetCell(j) != null)
                    {
                        dr[j] = row.GetCell(j).ToString();
                    }
                }

                dt.Rows.Add(dr);
            }

            sheet = null;
            workbook = null;

            return dt;
        }
        /// <summary>
        /// 简报导出
        /// </summary>
        /// <param name="ds"></param>
        /// <returns></returns>
        public string MarketExportToExcel(string stime,string etime,Market market )
        {
            try
            {
                HSSFWorkbook workbook = new HSSFWorkbook();
                ISheet sheet = workbook.CreateSheet("Sheet1");
                ICellStyle cellStyle = workbook.CreateCellStyle();

                //为避免日期格式被Excel自动替换，所以设定 format 为 『@』 表示一率当成text來看
                //cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("@");
                //cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                //cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                //cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                //cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;


                NPOI.SS.UserModel.IFont cellfont = workbook.CreateFont();
                cellfont.Boldweight = (short)FontBoldWeight.Normal;
                cellStyle.SetFont(cellfont);

                ICellStyle cellStylebt = workbook.CreateCellStyle();
                NPOI.SS.UserModel.IFont cellfontbt = workbook.CreateFont();
                cellfontbt.Boldweight = (short)FontBoldWeight.Bold;
                cellStylebt.SetFont(cellfontbt);
                cellStylebt.VerticalAlignment = VerticalAlignment.Center;
                cellStylebt.Alignment = HorizontalAlignment.Center;

                IRow irow1 = sheet.CreateRow(1);
                ICell cell1 = irow1.CreateCell(0);
                cell1.SetCellValue("时间：" + stime + " 至 " + etime);
                cell1.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(1, 1, 0, 7));
                //((HSSFSheet)sheet).SetEnclosedBorderOfRegion(new CellRangeAddress(1, 1, 0, 7), BorderStyle.Thin, NPOI.HSSF.Util.HSSFColor.Black.Index);

                #region 产品投诉情况
                List<Ification>    dt1 = market.product ;
                IRow irow2 = sheet.CreateRow(2);
                ICell cell2 = irow2.CreateCell(0);
                cell2.SetCellValue("产品投诉情况");
                cell2.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(2, 2, 0, 7));
               int dtrow = 3;
                 if (dt1.Count >0)
                {
                    int dt = 0;
                    int  a = dt1.Count / 3;
                    float b = dt1.Count % 3;
                    if (b >0)
                        a = a + 1;
                    dtrow += a;
                    List<IRow> irow3list = new List<IRow>();
                      for (int i =0;i <a;i++)
                      {
                        IRow irow3 = sheet.CreateRow(3 + i);
                        irow3list.Add(irow3);
                      }
                    int td = 0;
                        foreach (var it in dt1)
                        {
                            dt++;
                            if (dt <4)
                            {
                                ICell cell101 = irow3list[td].CreateCell(3 * dt  - 3);
                                cell101.SetCellValue(it.name );
                                cell101.CellStyle = cellStylebt;
                                ICell cell102 = irow3list[td].CreateCell(3 * dt  - 2);
                                cell102.SetCellValue(it .number );
                                cell102.CellStyle = cellStylebt;
                               ICell cell103= irow3list[td].CreateCell(3 * dt-1 );
                               cell103.SetCellValue(it.Proportion );
                               cell103.CellStyle = cellStylebt;
                        }
                            else
                            {
                                dt = 1;
                                td++;
                                ICell cell101 = irow3list[td].CreateCell(3 * dt - 3);
                                cell101.SetCellValue(it.name);
                                cell101.CellStyle = cellStylebt;
                                ICell cell102 = irow3list[td].CreateCell(3 * dt - 2);
                                cell102.SetCellValue(it.number);
                                cell102.CellStyle = cellStylebt;
                               ICell cell103 = irow3list[td].CreateCell(3 * dt-1);
                                cell103.SetCellValue(it.Proportion);
                                cell103.CellStyle = cellStylebt;
                        }
                        }
                   
                }

                #endregion

                #region 服务投诉情况
                Ification dt2 = market.service;
                dtrow++;
                IRow irow4 = sheet.CreateRow(dtrow);
                ICell cell4 = irow4.CreateCell(0);
                cell4.SetCellValue("服务投诉情况");
                cell4.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(dtrow, dtrow, 0, 7));
                if (dt2!=null )
                {
                    dtrow++;
                    IRow irow5 = sheet.CreateRow(dtrow);
                    ICell cell51 = irow5.CreateCell(0);
                    cell51.SetCellValue(dt2.name);
                    cell51.CellStyle = cellStylebt;
                    ICell cell52 = irow5.CreateCell(1);
                    cell52.SetCellValue(dt2.number);
                    cell52.CellStyle = cellStylebt;
                    ICell cell53 = irow5.CreateCell(2);
                    cell53.SetCellValue(dt2.Proportion);
                    cell53.CellStyle = cellStylebt;
                }
               
                #endregion
                #region 涉媒投诉
                Ification dt3 = market.sediainvolved;
                dtrow++;
                IRow irow9 = sheet.CreateRow(dtrow);
                ICell cell9 = irow9.CreateCell(0);
                cell9.SetCellValue("涉媒投诉");
                cell9.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(dtrow, dtrow, 0, 7));
                if (dt3!=null )
                {
                    dtrow++;
                    IRow irow10 = sheet.CreateRow(dtrow);
                    ICell cell53 = irow10.CreateCell(0);
                    cell53.SetCellValue(dt3.name);
                    cell53.CellStyle = cellStylebt;
                    ICell cell54 = irow10.CreateCell(1);
                    cell54.SetCellValue(dt3.number);
                    cell54.CellStyle = cellStylebt;
                    ICell cell55 = irow10.CreateCell(2);
                    cell55.SetCellValue(dt3.Proportion);
                    cell55.CellStyle = cellStylebt;
                }
               
                #endregion

                #region 市场抽检
                Ification dt4 = market.spotcheck;
                dtrow++;
                IRow irow11 = sheet.CreateRow(dtrow);
                ICell cell12 = irow11.CreateCell(0);
                cell12.SetCellValue("市场抽检");
                cell12.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(dtrow, dtrow, 0, 7));
                if (dt4!=null )
                {
                    dtrow++;
                    IRow irow12 = sheet.CreateRow(dtrow);
                    ICell cell55 = irow12.CreateCell(0);
                    cell55.SetCellValue(dt4.name);
                    cell55.CellStyle = cellStylebt;
                    ICell cell56 = irow12.CreateCell(1);
                    cell56.SetCellValue(dt4.number);
                    cell56.CellStyle = cellStylebt;
                    ICell cell57 = irow12.CreateCell(2);
                    cell57.SetCellValue(dt4.Proportion);
                    cell57.CellStyle = cellStylebt;
                }
             

                #endregion

                #region 其他信息
                Ification dt5 = market.other;
                dtrow++;
                IRow irow13 = sheet.CreateRow(dtrow);
                ICell cell13 = irow13.CreateCell(0);
                cell13.SetCellValue("其他信息");
                cell13.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(dtrow, dtrow, 0, 7));
                if (dt5!=null )
                {
                    dtrow++;
                    IRow irow15 = sheet.CreateRow(dtrow);
                    ICell cell57 = irow15.CreateCell(0);
                    cell57.SetCellValue(dt4.name);
                    cell57.CellStyle = cellStylebt;
                    ICell cell58 = irow15.CreateCell(1);
                    cell58.SetCellValue(dt4.number);
                    cell58.CellStyle = cellStylebt;
                    ICell cell59 = irow15.CreateCell(2);
                    cell59.SetCellValue(dt5.Proportion);
                    cell59.CellStyle = cellStylebt;
                }
               
                #endregion
                //自适应列宽度
                for (int i = 0; i < 8; i++)
                {
                    // sheet.AutoSizeColumn(i);
                    sheet.SetColumnWidth(i, 12 * 256);
                }

                using (MemoryStream ms = new MemoryStream())
                {
                    workbook.Write(ms);

                    HttpContext curContext = HttpContext.Current;


                    // 设置编码和附件格式
                    curContext.Response.ContentType = "application/vnd.ms-excel";
                    curContext.Response.ContentEncoding = Encoding.UTF8;
                    curContext.Response.Charset = "";
                    curContext.Response.AppendHeader("Content-Disposition",
                        "attachment;filename=" + HttpUtility.UrlEncode("市场信息简报"  + ".xls", Encoding.UTF8));

                    curContext.Response.BinaryWrite(ms.GetBuffer());

                    workbook = null;
                    ms.Close();
                    ms.Dispose();

                    curContext.Response.End();
                }
                return "";
            }
            catch
            {
                return "导出失败！";
            }
        }

        private void Columnwidth(int number, ISheet ffSheet)
        {
            for (int columnNum = 0; columnNum <= number; columnNum++)
            {
                int columnWidth = ffSheet.GetColumnWidth(columnNum) / 256;//获取当前列宽度  
                for (int rowNum = 1; rowNum <= ffSheet.LastRowNum; rowNum++)//在这一列上循环行  
                {
                    IRow currentRow = ffSheet.GetRow(rowNum);
                    ICell currentCell = currentRow.GetCell(columnNum);
                    int length = Encoding.UTF8.GetBytes(currentCell.ToString()).Length;//获取当前单元格的内容宽度  
                    if (columnWidth < length + 1)
                    {
                        columnWidth = length + 1;
                    }//若当前单元格内容宽度大于列宽，则调整列宽为当前单元格宽度，后面的+1是我人为的将宽度增加一个字符  
                }
            }
        }
        private string ReturnMsg(int j, int i, List<Factory> Factory1)
        {
            string msg = "";
            switch (j)
            {
                case 0:
                    msg = Factory1[i * 2].name;
                    break;
                case 1:
                    msg = Factory1[i * 2].number.ToString();
                    break;
                case 2:
                    msg = Factory1[i * 2].proportion;
                    break;
                case 3:
                    msg = Factory1[i * 2 + 1].name;
                    break;
                case 4:
                    msg = Factory1[i * 2 + 1].number.ToString();
                    break;
                case 5:
                    msg = Factory1[i * 2 + 1].proportion;
                    break;
            }
            return msg;
        }
        /// <summary>
        /// 投诉产品日期分布表
        /// </summary>
        /// <param name="ds"></param>
        /// <returns></returns>
        public string DistributionToExcel(DateTime datetime, Product product)
        {
            try
            {
                HSSFWorkbook workbook = new HSSFWorkbook();
                ISheet sheet = workbook.CreateSheet("Sheet1");
                ICellStyle cellStyle = workbook.CreateCellStyle();
              
                NPOI.SS.UserModel.IFont cellfont = workbook.CreateFont();
                cellfont.Boldweight = (short)FontBoldWeight.Normal;
                cellStyle.SetFont(cellfont);
               
                ICellStyle cellStylebt = workbook.CreateCellStyle();
                cellStylebt.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStylebt.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStylebt.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStylebt.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
                NPOI.SS.UserModel.IFont cellfontbt = workbook.CreateFont();
                cellfontbt.Boldweight = (short)FontBoldWeight.Bold;
               
                cellStylebt.SetFont(cellfontbt);
                cellStylebt.VerticalAlignment = VerticalAlignment.Center;
                cellStylebt.Alignment = HorizontalAlignment.Center;
                IRow irow1 = sheet.CreateRow(0);
                ICell cell1 = irow1.CreateCell(0);
                cell1.SetCellValue(datetime.Year +"年"+datetime .Month +"月份投诉产品日期分布情况表");
                cell1.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, 13));
                #region 产品投诉情况
                ICellStyle cellStylebt1 = workbook.CreateCellStyle();
                cellStylebt1.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                cellStylebt1.SetFont(cellfontbt);
                cellStylebt1.VerticalAlignment = VerticalAlignment.Center;
                cellStylebt1.Alignment = HorizontalAlignment.Center;
                IRow irow2 = sheet.CreateRow(1);
                ICell cell2 = irow2.CreateCell(0);
                ICellStyle style13 = workbook.CreateCellStyle();
                style13.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
                style13.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
                style13.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
                style13.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
                style13.BorderDiagonalLineStyle = BorderStyle.Thin;
                style13.BorderDiagonal = BorderDiagonal.Backward;
                style13.BorderDiagonalColor = IndexedColors.Black .Index;
                string sb = "                  数量\n日期";
              //  StringBuilder sb = new StringBuilder();
              //  sb.AppendLine("数量".PadLeft(15));//该行不足长度10在左侧填空格
              //  sb.AppendLine("日期".PadRight(15));//该行不足长度10在右侧填空格
                cell2.SetCellValue(sb);
                cell2.CellStyle = cellStylebt;
                style13.WrapText = true;
                irow2.GetCell(0).CellStyle = style13;
                sheet.AddMergedRegion(new CellRangeAddress(1, 2, 0,0 ));
                ICell cell6 = irow2.CreateCell(1);
                cell6.SetCellValue("投诉产品");
                cell6.CellStyle = cellStylebt;
                sheet.AddMergedRegion(new CellRangeAddress(1, 1, 1, 1));
                for (int i=0;i<5;i ++)
                {
                    string msg = "";
                    switch (i)
                    {
                        case 0:
                            msg = datetime.AddMonths(-11).Month + "-" + datetime.AddMonths(-3).Month + "月份日期";
                            break;
                        case 1:
                            msg = datetime.AddMonths(-2).Month + "月份日期";
                            break;
                        case 2:
                            msg = datetime.AddMonths(-1).Month + "月份日期";
                            break;
                        case 3:
                            msg = datetime.Month + "月份日期";
                            break;
                        case 4:
                            msg = "不清楚日期";
                            break;
                    }
                    ICell cell3 = irow2.CreateCell(i *2+ 2 );
                    cell3.SetCellValue(msg);
                    cell3.CellStyle = cellStylebt;
                    ICell cell4 = irow2.CreateCell(i * 2 + 3);
                    cell4.CellStyle = cellStylebt;
                    sheet.AddMergedRegion(new CellRangeAddress(1, 1, i * 2 + 2, i * 2 + 3));
                }
                 IRow irow3 = sheet.CreateRow(2);
                for (int i = 0; i < 11; i++)
                {

                    string msg = "";
                    if (i ==0)
                    {
                        msg = "数量";
                    }
                    else
                    {
                        if (i % 2 == 0)
                        {
                            msg = "占比";
                        }
                        else
                        {
                            msg = "数量";
                        }
                    }
                    ICell cell4 = irow3.CreateCell(i+1);
                    cell4.SetCellValue(msg);
                    cell4.CellStyle = cellStylebt;
                    
                }
                List<Date> dt1 = product.dates;
                if (dt1!=null )
                {
                    for (int i=0;i < dt1.Count;i ++)
                    {
                        IRow irow4 = sheet.CreateRow(3 + i);
                        string msg = "";
                        for (int j = 0; j < 12; j ++)
                        {
                            switch (j )
                            {
                                case 0:
                                    msg = dt1[i].name;
                                    break;
                                case 1:
                                    msg = dt1[i].total.ToString();
                                    break;
                                case 2:
                                    msg = dt1[i].MonthCount1 .ToString ();
                                    break;
                                case 3:
                                    msg = dt1[i].MonthCountmix1 .ToString();
                                    break;
                                case 4:
                                    msg = dt1[i].MonthCount2.ToString();
                                    break;
                                case 5:
                                    msg = dt1[i].MonthCountmix2.ToString();
                                    break;
                                case 6:
                                    msg = dt1[i].MonthCount3.ToString();
                                    break;
                                case 7:
                                    msg = dt1[i].MonthCountmix3.ToString();
                                    break;
                                case 8:
                                    msg = dt1[i].MonthCount4.ToString();
                                    break;
                                case 9:
                                    msg = dt1[i].MonthCountmix4.ToString();
                                    break;
                                case 10:
                                    msg = dt1[i].MonthCount5.ToString();
                                    break;
                                case 11:
                                    msg = dt1[i].MonthCountmix5.ToString();
                                    break;
                                   
                            }
                            ICell cell5 = irow4.CreateCell(j);
                            cell5.SetCellValue(msg);
                            cell5.CellStyle = cellStylebt;
                        }
                    }
                }
                int t = dt1.Count + 2;int count = 0;
                List<Factory> Factory1 = product.factory;
                List<Factory> Factory2 = product.problem;
                List<Factory> Factory3 = product.product;
                int factory = 0, problem = 0, productcode = 0;
                if (Factory1 != null)
                    factory = (Factory1.Count / 2) + (0 == Factory1.Count % 2 ? 0 : 1);  
                if (Factory2 != null)
                    problem = Factory2.Count;
                if (Factory3 != null)
                    productcode = Factory3.Count;
                bool istrue = true; int a = 0, total = problem + productcode;
                if (factory>(total))
                {
                    count = factory;
                   a = factory - total;
                }
                else
                {
                    istrue = false;
                    count = total;
                }
                IRow irow5 = sheet.CreateRow(t+1);
                ICell cell7 = irow5.CreateCell(0);
                cell7.SetCellValue("工\n厂\n投\n诉\n占\n比\n");
                cell7.CellStyle = cellStylebt;
                cell7.CellStyle.WrapText=true ;
                sheet.AddMergedRegion(new CellRangeAddress(t+1, t+ count, 0, 0));
                ICell cell10 = irow5.CreateCell(7);
                cell10.SetCellValue("各\n质\n量\n问\n题\n占\n比\n");
                cell10.CellStyle = cellStylebt;
                cell10.CellStyle.WrapText = true;
                int structure = t + problem;
                if (istrue)
                {
                  if (a >1)
                    {
                        structure = t + problem + a / 2;
                        sheet.AddMergedRegion(new CellRangeAddress(t+1, t + problem + a / 2, 7, 7));
                    }
                       
                  else
                    {
                        structure = t + problem;
                        sheet.AddMergedRegion(new CellRangeAddress(t+1, t + problem, 7, 7));
                    }
                }
                    else 
                sheet.AddMergedRegion(new CellRangeAddress(t+1, t + problem, 7, 7));
                IRow irow7 = sheet.CreateRow(structure+1);
                ICell cell11 = irow7.CreateCell(7);
                cell11.SetCellValue("结\n构\n占\n比\n");
                cell11.CellStyle = cellStylebt;
                cell11.CellStyle.WrapText = true;
                if (istrue)
                {
                    if (a > 1)
                        sheet.AddMergedRegion(new CellRangeAddress(structure + 1, structure+ productcode+a/2, 7, 7));
                    else
                        sheet.AddMergedRegion(new CellRangeAddress(structure + 1, structure + productcode+a, 7, 7));
                }
                    else
                    sheet.AddMergedRegion(new CellRangeAddress(structure + 1, structure + productcode, 7, 7));
                if (Factory1 != null)
                {
                    for (int i = 0; i < count; i++)
                    {
                        if (i ==0 || t + i== structure)
                        {
                             if (Factory1.Count > i*2)
                            {
                                for (int j = 0; j < 6; j++)
                                {
                                    string msg = ReturnMsg(j, i, Factory1);
                                    if (i == 0)
                                    {
                                        ICell cell8 = irow5.CreateCell(j + 1);
                                        cell8.SetCellValue(msg);
                                        cell8.CellStyle = cellStylebt;
                                    }
                                    else
                                    {
                                        ICell cell9 = irow7.CreateCell(j + 1);
                                        cell9.SetCellValue(msg);
                                        cell9.CellStyle = cellStylebt;
                                    }
                                }
                            }
                               
                            if (i ==0)
                            {
                                for (int z = 0; z < 3; z++)
                                {
                                    switch (z)
                                    {
                                        case 0:
                                            ICell cell12 = irow5.CreateCell(8);
                                            cell12.SetCellValue(Factory2[0].name );
                                            cell12.CellStyle = cellStylebt;
                                            sheet.AddMergedRegion(new CellRangeAddress(t+1, t+1 , 8, 9));
                                            ICell cell22 = irow5.CreateCell(9);
                                            cell22.CellStyle = cellStylebt;
                                            break;
                                        case 1:
                                            ICell cell13 = irow5.CreateCell(10);
                                            cell13.SetCellValue(Factory2[0].number .ToString ());
                                            cell13.CellStyle = cellStylebt;
                                           
                                            break;
                                        case 2:
                                            ICell cell14 = irow5.CreateCell(11);
                                            cell14.SetCellValue(Factory2[0].proportion);
                                            cell14.CellStyle = cellStylebt;
                                            break;
                                    }
                                    
                                }
                            }
                            else 
                            {
                                ICell cell119 = irow7.CreateCell(0);
                                cell119.CellStyle = cellStylebt;
                                for (int z = 0; z < 3; z++)
                                {
                                    switch (z)
                                    {
                                        case 0:
                                            ICell cell15 = irow7.CreateCell(8);
                                            cell15.SetCellValue(Factory3[0].name);
                                            cell15.CellStyle = cellStylebt;
                                            sheet.AddMergedRegion(new CellRangeAddress(structure+1, structure+1, 8, 9));
                                            ICell cell31 = irow7.CreateCell(9);
                                            cell15.CellStyle = cellStylebt;
                                            break;
                                        case 1:
                                            ICell cell16 = irow7.CreateCell(10);
                                            cell16.SetCellValue(Factory3[0].number.ToString());
                                            cell16.CellStyle = cellStylebt;

                                            break;
                                        case 2:
                                            ICell cell17= irow7.CreateCell(11);
                                            cell17.SetCellValue(Factory3[0].proportion);
                                            cell17.CellStyle = cellStylebt;
                                            break;
                                    }

                                }
                            }
                           
                        }
                        else
                        {
                            
                            IRow irow6 = sheet.CreateRow(t+1 + i);
                            if (Factory1.Count %2!=0)
                            {
                                if (i * 2+1 < Factory1.Count)
                                {
                                    for (int j = 0; j < 6; j++)
                                    {
                                        string msg = ReturnMsg(j, i, Factory1);
                                        ICell cell18 = irow6.CreateCell(j + 1);
                                        cell18.SetCellValue(msg);
                                        cell18.CellStyle = cellStylebt;
                                    }
                                }
                                else if (i * 2 + 1 == Factory1.Count)
                                {
                                    for (int j = 0; j < 3; j++)
                                    {
                                        string msg = ReturnMsg(j, i, Factory1);
                                        ICell cell18 = irow6.CreateCell(j + 1);
                                        cell18.SetCellValue(msg);
                                        cell18.CellStyle = cellStylebt;
                                    }
                                }

                            }
                            else
                            {
                                if (i * 2 < Factory1.Count)
                                {
                                    for (int j = 0; j < 6; j++)
                                    {
                                        string msg = ReturnMsg(j, i, Factory1);
                                        ICell cell18 = irow6.CreateCell(j + 1);
                                        cell18.SetCellValue(msg);
                                        cell18.CellStyle = cellStylebt;
                                    }
                                }
                            }
                           
                                int b = 0;
                                if (a >1)
                                {
                                    b= (a / 2) + (0 == a % 2 ? 0 : 1);
                                }
                                if (i < Factory2.Count -1)
                                {
                                    for (int z = 0; z < 3; z++)
                                    {
                                        switch (z)
                                        {
                                            case 0:
                                                ICell cell8 = irow6.CreateCell(8);
                                                cell8.SetCellValue(Factory2[i].name);
                                                cell8.CellStyle = cellStylebt;
                                                sheet.AddMergedRegion(new CellRangeAddress(t+1 + i, t+1 + i, 8, 9));
                                                ICell cell22 = irow6.CreateCell(9);
                                                cell22.CellStyle = cellStylebt;
                                                break;
                                            case 1:
                                                ICell cell9 = irow6.CreateCell(10);
                                                cell9.SetCellValue(Factory2[i].number.ToString());
                                                cell9.CellStyle = cellStylebt;

                                                break;
                                            case 2:
                                                ICell cell12 = irow6.CreateCell(11);
                                                cell12.SetCellValue(Factory2[i].proportion);
                                                cell12.CellStyle = cellStylebt;
                                                break;
                                        }
                                    }
                                }
                               else  if (i == Factory2.Count-1 )
                                {
                                    for (int z = 0; z < 3; z++)
                                    {
                                        string msg = "";
                                        switch (z)
                                        {
                                            case 0:
                                                ICell cell8 = irow6.CreateCell(8);
                                                cell8.SetCellValue(Factory2[i].name);
                                                cell8.CellStyle = cellStylebt;
                                                sheet.AddMergedRegion(new CellRangeAddress(t +1+ i, t+1 + i+b , 8, 9));
                                            if (istrue )
                                            {
                                                ICell cell22 = irow6.CreateCell(9);
                                                cell22.CellStyle = cellStylebt;
                                            }
                                                break;
                                            case 1:
                                                ICell cell9 = irow6.CreateCell(10);
                                                cell9.SetCellValue(Factory2[i].number.ToString());
                                                cell9.CellStyle = cellStylebt;
                                                sheet.AddMergedRegion(new CellRangeAddress(t+1 + i, t+1 + i + b, 10, 10));

                                                break;
                                            case 2:
                                                ICell cell12 = irow6.CreateCell(11);
                                                cell12.SetCellValue(Factory2[i].proportion);
                                                cell12.CellStyle = cellStylebt;
                                                sheet.AddMergedRegion(new CellRangeAddress(t+1 + i, t+1 + i + b, 11, 11));
                                                break;
                                        }
                                    
                                    }
                                }
                                if (i <( Factory3.Count + Factory2.Count+b -1)&& i>= Factory2.Count + b)
                                {
                                    for (int z = 0; z < 3; z++)
                                    {
                                       
                                        switch (z)
                                        {
                                            case 0:
                                                ICell cell8 = irow6.CreateCell(8);
                                                cell8.SetCellValue(Factory3[i- Factory2.Count -b ].name);

                                                cell8.CellStyle = cellStylebt;
                                                sheet.AddMergedRegion(new CellRangeAddress(t +1+ i, t +1+ i, 8, 9));
                                                ICell cel27 = irow6.CreateCell(9);
                                                cel27.CellStyle = cellStylebt;
                                                break;
                                            case 1:
                                                ICell cell9 = irow6.CreateCell(10);
                                                cell9.SetCellValue(Factory3[i - Factory2.Count - b ].number.ToString());
                                                cell9.CellStyle = cellStylebt;

                                                break;
                                            case 2:
                                                ICell cell12 = irow6.CreateCell(11);
                                                cell12.SetCellValue(Factory3[i - Factory2.Count - b ].proportion);
                                                cell12.CellStyle = cellStylebt;
                                                break;
                                        }
                                    }
                                }
                                else  if ( i== Factory2.Count + b+ Factory3.Count-1 )
                                {
                                    for (int z = 0; z < 3; z++)
                                    {
                                        switch (z)
                                        {
                                            case 0:
                                                ICell cell8 = irow6.CreateCell(8);
                                                cell8.SetCellValue(Factory3[i - Factory2.Count - b].name);
                                                cell8.CellStyle = cellStylebt;
                                          
                                                sheet.AddMergedRegion(new CellRangeAddress(t +1+ i, t+1 + i + b, 8, 9));
                                                break;
                                            case 1:
                                                ICell cell9 = irow6.CreateCell(10);
                                                cell9.SetCellValue(Factory3[i - Factory2.Count - b].number.ToString());
                                                cell9.CellStyle = cellStylebt;
                                          
                                            sheet.AddMergedRegion(new CellRangeAddress(t + 1 + i, t + 1 + i + b, 10, 10));

                                                break;
                                            case 2:
                                                ICell cell12 = irow6.CreateCell(11);
                                                cell12.SetCellValue(Factory3[i - Factory2.Count - b].proportion);
                                                cell12.CellStyle = cellStylebt;
                                           
                                            sheet.AddMergedRegion(new CellRangeAddress(t + 1 + i, t + 1 + i + b, 11, 11));
                                                break;
                                        }
                                    }
                                }

                            
                            if ( i == Factory2.Count)
                            {
                                ICell cell120 = irow6.CreateCell(7);
                                cell120.CellStyle = cellStylebt;
                                ICell cell124 = irow6.CreateCell(9);
                                cell124.CellStyle = cellStylebt;
                                    ICell cell125 = irow6.CreateCell(10);
                                    cell125.CellStyle = cellStylebt;
                                    ICell cell126 = irow6.CreateCell(11);
                                    cell126.CellStyle = cellStylebt;
                                
                            }
                            if (!istrue )
                            {
                                if (i * 2>= Factory1.Count)
                                {
                                    ICell cell119 = irow6.CreateCell(0);
                                    cell119.CellStyle = cellStylebt;
                                   
                                }
                                if (i *2 +1>= Factory1.Count&i < Factory2.Count)
                                {
                                    ICell cell119 = irow6.CreateCell(7);
                                    cell119.CellStyle = cellStylebt;
                                }
                                if (i > Factory2.Count)
                                {
                                    ICell cell119 = irow6.CreateCell(7);
                                    cell119.CellStyle = cellStylebt;
                                }
                                if (i == count - 1)
                                {
                                    ICell cell119 = irow6.CreateCell(1);
                                    cell119.CellStyle = cellStylebt1;
                                    ICell cell121 = irow6.CreateCell(2);
                                    cell121.CellStyle = cellStylebt1;
                                    ICell cell132 = irow6.CreateCell(3);
                                    cell132.CellStyle = cellStylebt1;
                                    ICell cell128 = irow6.CreateCell(4);
                                    cell128.CellStyle = cellStylebt1;
                                    ICell cell129 = irow6.CreateCell(5);
                                    cell129.CellStyle = cellStylebt1;
                                    ICell cell130 = irow6.CreateCell(6);
                                    cell130.CellStyle = cellStylebt1;
                                    ICell cell131 = irow6.CreateCell(9);
                                    cell131.CellStyle = cellStylebt1;
                                }
                            }
                            else  if (i == count - 1)
                            {
                                ICell cell119 = irow6.CreateCell(0);
                                cell119.CellStyle = cellStylebt;
                                ICell cell121 = irow6.CreateCell(7);
                                cell121.CellStyle = cellStylebt;
                                ICell cell122 = irow6.CreateCell(4);
                                cell122.CellStyle = cellStylebt;
                                ICell cell123 = irow6.CreateCell(5);
                                cell123.CellStyle = cellStylebt;
                                ICell cell124 = irow6.CreateCell(6);
                                cell124.CellStyle = cellStylebt;
                                sheet.AddMergedRegion(new CellRangeAddress(t + 1 + i, t + 1 + i, 4, 6));
                                ICell cell132 = irow6.CreateCell(8);
                                cell132.CellStyle = cellStylebt;
                                ICell cell128 = irow6.CreateCell(9);
                                cell128.CellStyle = cellStylebt;
                                ICell cell129 = irow6.CreateCell(10);
                                cell129.CellStyle = cellStylebt;
                                ICell cell130 = irow6.CreateCell(11);
                                cell130.CellStyle = cellStylebt;
                             //   sheet.AddMergedRegion(new CellRangeAddress(t + 1 + i, t + 1 + i, 8, 11));
                            }
                        }

                    }
                }
            




                #endregion



                //自适应列宽度
                for (int i = 0; i < 12; i++)
                {
                 //  sheet.AutoSizeColumn(i);
                    sheet.SetColumnWidth(i, 15 * 256);
                }

                using (MemoryStream ms = new MemoryStream())
                {
                    workbook.Write(ms);

                    HttpContext curContext = HttpContext.Current;


                    // 设置编码和附件格式
                    curContext.Response.ContentType = "application/vnd.ms-excel";
                    curContext.Response.ContentEncoding = Encoding.UTF8;
                    curContext.Response.Charset = "";
                    curContext.Response.AppendHeader("Content-Disposition",
                        "attachment;filename=" + HttpUtility.UrlEncode("投诉产品日期分布表" + ".xls", Encoding.UTF8));

                    curContext.Response.BinaryWrite(ms.GetBuffer());

                    workbook = null;
                    ms.Close();
                    ms.Dispose();

                    curContext.Response.End();
                }
                return "";
            }
            catch
            {
              return "导出失败！";
              
            }
        }


    }
}