C# 将包含图片的信息导出到excle中

意：这里借助到了两个第三方的插件。

见附件地址：https://files.cnblogs.com/files/JackZhangcom/NPOI_DLL.zip

1.注册按钮：

  ((ScriptManager)Master.FindControl("ScriptManager1")).RegisterPostBackControl(btnExport);

 

2.在刚才的注册的进行导出excle代码

    protected void btnExport_Click(object sender, EventArgs e)

{

　　

downLoadExcle（；）

}

代码如下：

      public void downLoadExcle()
        {
            HSSFWorkbook workbook = new HSSFWorkbook();
            //创建一个sheet
            ISheet sheet1 = workbook.CreateSheet("sheet1");
            // 设置列宽,excel列宽每个像素是1/256
            sheet1.SetColumnWidth(0, 18 * 256);
            sheet1.SetColumnWidth(1, 18 * 256);
            sheet1.SetColumnWidth(2, 18 * 256);
            sheet1.SetColumnWidth(3, 18 * 256);
            sheet1.SetColumnWidth(4, 18 * 256);
            IRow rowHeader = sheet1.CreateRow(0);//创建表头行
            rowHeader.CreateCell(0, CellType.String).SetCellValue("咨询类别");
            rowHeader.CreateCell(1, CellType.String).SetCellValue("咨询名称");
            rowHeader.CreateCell(2, CellType.String).SetCellValue("咨询内容");
            rowHeader.CreateCell(3, CellType.String).SetCellValue("提交时间");
            rowHeader.CreateCell(4, CellType.String).SetCellValue("图片");

            string strWhere = "";//兼顾sql与oracle

            int TotalNum = 0;

            DataTable MyDataTable = new BaseCode.DataBizlogic().GetDLJListPage(DataGrid1.PageSize, DataGrid1.CurrentPageIndex + 1, out TotalNum, strWhere);

            //MyDataTable.Columns.Add(new DataColumn("Pic", typeof(string)));

            DataTable dt = MyDataTable;
            if (DataGrid1.GetCheckedRows().Count == 0)
            {
                dt = new BaseCode.DataBizlogic().GetDLJAllListPage();
            }
            if (DataGrid1.GetCheckedRows().Count <= DataGrid1.PageSize && DataGrid1.GetCheckedRows().Count!=0)  //导出本页选中的数据 
            {
                int iRow = 0;
                foreach (string RowGuid in DataGrid1.GetCheckedRows())
                {
                    for (int i = 0; i < dt.Rows.Count; i++)
                    {
                        if (RowGuid == dt.Rows[i]["RowGuid"].ToString())
                        {

                            IRow row = sheet1.CreateRow(iRow + 1);
                            //设置行高 ,excel行高度每个像素点是1/20
                            row.Height = 80 * 20;
                            //填入生产单号
                            row.CreateCell(0, CellType.String).SetCellValue(dt.Rows[i]["zxType"].ToString());
                            row.CreateCell(1, CellType.String).SetCellValue(dt.Rows[i]["zxName"].ToString());
                            row.CreateCell(2, CellType.String).SetCellValue(dt.Rows[i]["zxContent"].ToString());
                            row.CreateCell(3, CellType.String).SetCellValue(dt.Rows[i]["InfoDate"].ToString());
                            //将图片文件读入一个字符串
                            //byte[] bytes = System.IO.File.ReadAllBytes(datarow["KTL_PIC"].ToString());


                            string strPicPath = "";

                            strPicPath += ConfigurationManager.AppSettings["PicPath"].ToString();

                            string InfoRowGuid = dt.Rows[i]["RowGuid"].ToString(); //获得该条信息的RowGuid
                            DataTable dTableInfoUpfile = new DataBizlogic().GetInfoUpfile(InfoRowGuid);

                            if (dTableInfoUpfile != null && dTableInfoUpfile.Rows.Count > 0)
                            {
                                string AttachID = dTableInfoUpfile.Rows[0]["AttachID"].ToString();
                                strPicPath += (@"/" + AttachID + @"/" + dTableInfoUpfile.Rows[0]["filename"].ToString());

                                Uri url = new Uri(strPicPath);
                                WebRequest webRequest = WebRequest.Create(url);
                                WebResponse webResponse = webRequest.GetResponse();

                                if (webResponse != null)
                                {
                                    Bitmap myImage = new Bitmap(webResponse.GetResponseStream());

                                    MemoryStream mestr = new MemoryStream();
                                    myImage.Save(mestr, System.Drawing.Imaging.ImageFormat.Jpeg);
                                    byte[] bytes = mestr.ToArray();

                                    //byte[] bytes = System.IO.File.ReadAllBytes(@"F:\Job\test\01.JPG");


                                    int pictureIdx = workbook.AddPicture(bytes, PictureType.JPEG);
                                    HSSFPatriarch patriarch = (HSSFPatriarch)sheet1.CreateDrawingPatriarch();
                                    // 插图片的位置  HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2) 后面再作解释
                                    HSSFClientAnchor anchor = new HSSFClientAnchor(70, 10, 0, 0, 4, iRow + 1, 5, (iRow + 1) + 1);
                                    //把图片插到相应的位置
                                    HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);

                                }
                               
                            }
                            iRow++;
                        }

                    }
                }
            }
            else  //导出所有的数据
            {
                if (dt.Rows.Count > 0)
                {
                    int rowline = 1;//从第二行开始(索引从0开始)
                    foreach (DataRow datarow in dt.Rows)
                    {
                        IRow row = sheet1.CreateRow(rowline);
                        //设置行高 ,excel行高度每个像素点是1/20
                        row.Height = 80 * 20;
                        //填入生产单号
                        row.CreateCell(0, CellType.String).SetCellValue(datarow["zxType"].ToString());
                        row.CreateCell(1, CellType.String).SetCellValue(datarow["zxName"].ToString());
                        row.CreateCell(2, CellType.String).SetCellValue(datarow["zxContent"].ToString());
                        row.CreateCell(3, CellType.String).SetCellValue(datarow["InfoDate"].ToString());
                        //将图片文件读入一个字符串
                        //byte[] bytes = System.IO.File.ReadAllBytes(datarow["KTL_PIC"].ToString());


                        string strPicPath = "";

                        strPicPath += ConfigurationManager.AppSettings["PicPath"].ToString();

                        string InfoRowGuid = datarow["RowGuid"].ToString(); //获得该条信息的RowGuid
                        DataTable dTableInfoUpfile = new DataBizlogic().GetInfoUpfile(InfoRowGuid);

                        if (dTableInfoUpfile != null && dTableInfoUpfile.Rows.Count > 0)
                        {
                            string AttachID = dTableInfoUpfile.Rows[0]["AttachID"].ToString();
                            strPicPath += (@"/" + AttachID + @"/" + dTableInfoUpfile.Rows[0]["filename"].ToString());

                            //byte[] bytes = System.IO.File.ReadAllBytes(@"F:\Job\test\01.JPG");
                            byte[] bytes = System.IO.File.ReadAllBytes(strPicPath);

                            int pictureIdx = workbook.AddPicture(bytes, PictureType.JPEG);
                            HSSFPatriarch patriarch = (HSSFPatriarch)sheet1.CreateDrawingPatriarch();
                            // 插图片的位置  HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2) 后面再作解释
                            HSSFClientAnchor anchor = new HSSFClientAnchor(70, 10, 0, 0, 4, rowline, 5, rowline + 1);
                            //把图片插到相应的位置
                            HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);
                        }

                        rowline++;
                    }
                }

            }




            ////把文件保存到d:\aaa.xls，注意扩展名是.xls不要写成.xlsx
            //using (Stream stream = File.OpenWrite(@"F:\aaa.xls"))
            //{
            //    workbook.Write(stream);
            //}

            //使用文件流保存
            MemoryStream ms = new MemoryStream();

            workbook.Write(ms);

            string ExclePath = System.Configuration.ConfigurationManager.AppSettings["ExclePath"].ToString();

            string tempExcel = Path.Combine(ExclePath, @"ExcelExport\TestExcel.xls");

            using (FileStream fs = new FileStream(tempExcel, FileMode.Create, FileAccess.ReadWrite))
            {
                ms.WriteTo(fs);
            }

            Response.Clear();
            Response.ClearHeaders();
            Response.ContentType = "application/octet-stream";
            Response.AddHeader("Content-Disposition", "attachent;filename=" + HttpUtility.UrlDecode(@"TestExcel.xls"));//TestExcel.xls可修改
            Response.WriteFile(tempExcel, true);
            Response.Flush();
            Response.Close();

            if (File.Exists(tempExcel))
            {
                File.Delete(tempExcel);
            }

            Response.End();

        }