使用NPOI将多张图片导入execl

 protected void btn_Export_Click(object sender, EventArgs e)
    {
        List<BNXX_SJXJ_XJSJ> list = ViewState["data"] as List<BNXX_SJXJ_XJSJ>;

        string[] AppPaths = HttpRuntime.AppDomainAppPath.ToString().Split('\\');
        string PicPath = string.Empty;
        for (int i = ; i < AppPaths.Length - ; i++)
        {
            PicPath = PicPath + "/" + AppPaths[i];
        }
        PicPath = PicPath.Substring() + "/mytest/Photos";
        ///调用模板，先保存，后下载
        string path = Server.MapPath("../../template/SJingSJ.xls");
        using (FileStream fs = File.OpenRead(path))
        {
            using (Workbook wk = new HSSFWorkbook(fs))
            {
                int pictureIndex1 = AddPictureToWorkbook(list[].XQSY, PicPath, wk);
                int pictureIndex2 = AddPictureToWorkbook(list[].XZSY, PicPath, wk);
                int pictureIndex3 = AddPictureToWorkbook(list[].XHSY, PicPath, wk);

                using (Sheet sheet = wk.GetSheetAt())
                {
                    sheet.GetRow().GetCell().SetCellValue(list[].JH);
                    sheet.GetRow().GetCell().SetCellValue(list[].FZR);
                    sheet.GetRow().GetCell().SetCellValue(list[].XJRQ);
                    sheet.GetRow().GetCell().SetCellValue(list[].GCZSQDYL1);
                    sheet.GetRow().GetCell().SetCellValue(list[].GCZSQDYL2);
                    sheet.GetRow().GetCell().SetCellValue(list[].GCZSQDYL3);
                    sheet.GetRow().GetCell().SetCellValue(list[].GY);
                    sheet.GetRow().GetCell().SetCellValue(list[].YY);
                    sheet.GetRow().GetCell().SetCellValue(list[].PZ);
                    sheet.GetRow().GetCell().SetCellValue(list[].SZ);
                    sheet.GetRow().GetCell().SetCellValue(list[].XJYYJMB);
                    sheet.GetRow().GetCell().SetCellValue(list[].LC);
                    sheet.GetRow().GetCell().SetCellValue(list[].XJYB);
                    sheet.GetRow().GetCell().SetCellValue(list[].JYGX);
                    sheet.GetRow().GetCell().SetCellValue(list[].XQ);
                    sheet.GetRow().GetCell().SetCellValue(list[].GCXJ);

                    sheet.GetRow().GetCell().SetCellValue(list[].YXJSJ);
                    sheet.GetRow().GetCell().SetCellValue(list[].YXJYL);
                    sheet.GetRow().GetCell().SetCellValue(list[].YXJPL);

                    sheet.GetRow().GetCell().SetCellValue(list[].EXJSJ);
                    sheet.GetRow().GetCell().SetCellValue(list[].EXJYL);
                    sheet.GetRow().GetCell().SetCellValue(list[].EXJPL);

                    sheet.GetRow().GetCell().SetCellValue(list[].SXJSJ);
                    sheet.GetRow().GetCell().SetCellValue(list[].SXJYL);
                    sheet.GetRow().GetCell().SetCellValue(list[].SXJPL);

                    sheet.GetRow().GetCell().SetCellValue(list[].YXJSJ2);
                    sheet.GetRow().GetCell().SetCellValue(list[].YXJYL2);
                    sheet.GetRow().GetCell().SetCellValue(list[].YJKPL);
                    sheet.GetRow().GetCell().SetCellValue(list[].YCKPL);

                    sheet.GetRow().GetCell().SetCellValue(list[].EXJSJ2);
                    sheet.GetRow().GetCell().SetCellValue(list[].EXJYL2);
                    sheet.GetRow().GetCell().SetCellValue(list[].EJKPL);
                    sheet.GetRow().GetCell().SetCellValue(list[].ECKPL);

                    sheet.GetRow().GetCell().SetCellValue(list[].SXJSJ2);
                    sheet.GetRow().GetCell().SetCellValue(list[].SXJYL2);
                    sheet.GetRow().GetCell().SetCellValue(list[].SJKPL);
                    sheet.GetRow().GetCell().SetCellValue(list[].SCKPL);

                    sheet.GetRow().GetCell().SetCellValue(list[].XJCH);
                    sheet.GetRow().GetCell().SetCellValue(list[].XJXG);

                    sheet.GetRow().GetCell().SetCellValue(list[].XQSYSJ);
                    sheet.GetRow().GetCell().SetCellValue(list[].XZSYSJ);
                    sheet.GetRow().GetCell().SetCellValue(list[].XHSYSJ);

                    InsertPictureToSheet(sheet, pictureIndex1, , , , );
                    InsertPictureToSheet(sheet, pictureIndex2, , , , );
                    InsertPictureToSheet(sheet, pictureIndex3, , , , );

                    //AddPictureToExecl(list[0].XQSY, PicPath, wk, sheet, 2, 24, 4, 24);
                    //AddPictureToExecl(list[0].XZSY, PicPath, wk, sheet, 5, 24, 11, 24);
                    //AddPictureToExecl(list[0].XHSY, PicPath, wk, sheet, 12, 24, 16, 24);
                    string outputPath = Server.MapPath("../../OutPut/注水井洗井设计报表.xls");
                    using (FileStream files = new FileStream(outputPath, FileMode.Create))
                    {
                        wk.Write(files);
                    }

                    Response.Clear();
                    Response.Buffer = true;
                    Response.Charset = "utf-8";
                    Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode("注水井洗井设计报表", System.Text.Encoding.UTF8) + ".xls");
                    Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");     //设置输出流为简体中文
                    Response.ContentType = "application/ms-execl";    //设置输出文件类型为excel文件。
                    Response.WriteFile(outputPath);
                    Response.End();
                }
            }
        }
    }

 //2, 24, 4, 24
    private int AddPictureToWorkbook(string picName, string PicPath, Workbook wk)
    {
        bool isExists = true;
        if (!string.IsNullOrEmpty(picName))
        {
            PicPath = PicPath + "/" + picName;
            isExists = Directory.Exists(PicPath);
        }
        else
        {
            isExists = false;
        }
        if (!isExists)
        {
            PicPath = Server.MapPath("../../Images/Button/Defalut .jpg");
        }
        byte[] bytes = System.IO.File.ReadAllBytes(PicPath);
        int pictureIdx = wk.AddPicture(bytes, PictureType.JPEG);
        return pictureIdx;
    }

private void InsertPictureToSheet(Sheet sheet, int pictureIdx, int StartX, int StartY, int EndX, int EndY)
    {
        Drawing patriarch = sheet.CreateDrawingPatriarch();
        HSSFClientAnchor anchor = new HSSFClientAnchor(, , , , StartX, StartY, EndX, EndY);
        Picture pict = patriarch.CreatePicture(anchor, pictureIdx);
        pict.Resize();
    }