#region 创建 Word 文档

        string templatePath = Server.MapPath("template.docx");
        // 只创建一个Document（关键优化）
        Document doc = new Document(templatePath);
        //清空模板内容（如果模板只是占位用）
        doc.RemoveAllChildren();
        //用Builder写入（核心：避免AppendDocument）
        DocumentBuilder builder = new DocumentBuilder(doc);
        #endregion

        #region 数据       
        if (ds.Tables[0].Rows.Count > 0)
        {
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            {
                var row = ds.Tables[0].Rows[i];

                // 获取图片路径
                string xys = getimg1(row["xys"].ToString(), obj);
                string[] pic = Fun.splitstr(xys, "、");

                if (string.IsNullOrEmpty(pic[0]))
                    continue;

                if (pic[0] == "/templates/default/images/icon/pdf.gif")
                    continue;

                if (Fun.GetStrRight(pic[0], 1) == ".")
                    pic[0] = pic[0] + "jpg";

                string imagePath = Server.MapPath(pic[0]);

                // ===== 1. 标题 =====
                builder.ParagraphFormat.Alignment = ParagraphAlignment.Center;
                builder.Font.Size = 16;
                builder.Font.Bold = true;
                builder.Writeln(row["hzqymc"].ToString());

                builder.Font.ClearFormatting();
                builder.ParagraphFormat.ClearFormatting();

                // ===== 2. 图片（限制尺寸避免OOM）=====
                try
                {
                    using (var img = System.Drawing.Image.FromFile(imagePath))
                    {
                        int width = 800;
                        int height = (int)(img.Height * (800.0 / img.Width));

                        using (var bmp = new Bitmap(img, new Size(width, height)))
                        {
                            string temp = Path.Combine(Path.GetTempPath(), Guid.NewGuid() + ".jpg");
                            bmp.Save(temp, System.Drawing.Imaging.ImageFormat.Jpeg);

                            builder.InsertImage(temp, 0, 600);

                            File.Delete(temp);
                        }
                    }

                  
                }
                catch
                {
                    FileObj.FileAdd(Server.MapPath("1.txt"),
                        row["hzqymc"] + "----" + pic[0] + "\r\n");
                }

                // ===== 3. 分页 =====
                if (i < ds.Tables[0].Rows.Count - 1)
                {
                    builder.InsertBreak(BreakType.PageBreak);
                }
            }
        }

        #endregion

        #region 下载

        Response.Clear();
        Response.ContentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
        Response.AddHeader("Content-Disposition", "attachment; filename=协议书.docx");

        using (var ms = new MemoryStream())
        {
            doc.Save(ms, SaveFormat.Docx);

            ms.Position = 0;

            byte[] buffer = new byte[81920]; // 80KB 缓冲（推荐）
            int bytesRead;

            while ((bytesRead = ms.Read(buffer, 0, buffer.Length)) > 0)
            {
                Response.OutputStream.Write(buffer, 0, bytesRead);
            }

            Response.Flush();
            Response.End();
        }


       
        #endregion