c#调用excel模板页，然后套用模板页导出单个sheet

        protected void btn_Export_Click(object sender, EventArgs e)
        {
            ////删除保存在服务器的数据
            //string path1 = Server.MapPath(Request.ApplicationPath) + @"ShoesPic\报价单导出.xls";
            //System.IO.File.Delete(path1);
            string filepath=null;
            GC.Collect();
            //获得模板页的路径
            string strFileName = Server.MapPath(Request.ApplicationPath) + @"ShoesPic\template.xls";
            //string strSaveFileName = Environment.CurrentDirectory + @"\excel\" + System.DateTime.Now.ToString().Replace(":", "").Replace("-", "").Replace(" ", "") + @".xls";
            Application excel = new Application();
            Workbook xBk;
            object missing = System.Reflection.Missing.Value;
            if (excel == null)
            {
                Response.Write("<script>alert('Can't access excel')</script>");
            }
            else
            {
                try
                {
                    excel.Visible = true;
                    excel.UserControl = true;
                    //加载Excel模板文件
                    xBk = excel.Application.Workbooks.Open(strFileName, missing, true, missing, missing, missing, missing, missing, missing, true, missing, missing, missing, missing, missing);
                    Worksheet xSt = (Worksheet)xBk.Sheets[1];//第一个sheet页
                    //xSt.Name = "报价单导出"; //这里修改sheet名称
                    //xSt.Copy(Type.Missing, xBk.Sheets[1]); //复制xSt成一个新的sheet页
                    //去读取数据放入xSt
                    string quoteno = Request["c"].ToString();//获得报价单编号
                    Basic.QuoteManager manager = new Basic.QuoteManager();
                    Model.Quote quote = manager.getQuotevalueByNo(quoteno);
                    string providername = quote.ProviderName;
                    string brand = quote.Brand;
                    string colthnob = quote.Colthnob;
                    string q_user = quote.Q_User;
                    string phone = quote.Phone;
                    string mobile = quote.Mobile;
                    string c_user = quote.C_User;
                    string principal = quote.Principal;
                    string leader = quote.Leader;
                    string picurl = quote.PicUrl;
                    string user = quote.User;
                    string remark = quote.Remark;
                    string q_date = quote.Q_Date.ToString();
                    string contract_price = quote.Contract_Price.ToString();
                    //报价单位
                    xSt.get_Range("B2", missing).Value2 = providername;
                    //品牌
                    xSt.get_Range("B3", missing).Value2 = brand;
                    //款号/工厂货号
                    xSt.get_Range("B4", missing).Value2 = colthnob;
                    //报价人
                    xSt.get_Range("B5", missing).Value2 = q_user;
                    //联系电话
                    xSt.get_Range("B6", missing).Value2 = phone;
                    //移动电话
                    xSt.get_Range("B7", missing).Value2 = mobile;
                    //日期/报价日期
                    xSt.get_Range("D2", missing).Value2 = q_date;
                    //核价人员
                    xSt.get_Range("D3", missing).Value2 = c_user;
                    //品牌负责人
                    xSt.get_Range("D4", missing).Value2 = principal;
                    //分管领导
                    xSt.get_Range("D5", missing).Value2 = leader;
                    //图片/图片地址
                    xSt.get_Range("D6", missing).Value2 = picurl;
                    //制单人
                    xSt.get_Range("D7", missing).Value2 = user;
                    //合同价
                    xSt.get_Range("F2", missing).Value2 = contract_price;
                    //备注
                    xSt.get_Range("F3", missing).Value2 = remark;

                    ////明细表数据
                    Basic.QuoteManager manager1 = new Basic.QuoteManager();
                    Model.QuoteDetail[] quotedetail = manager1.getQuoteDetailvalueByNo(quoteno);
                    int count = quotedetail.Length;
                    int rowsint = 10;
                    foreach (Model.QuoteDetail i in quotedetail)
                    {
                        //item 项目
                        xSt.Cells.get_Range("A" + rowsint, missing).Value2 = i.Item;
                        //itemname 名称
                        xSt.Cells.get_Range("B" + rowsint, missing).Value2 = i.Itemname;
                        //unit 单位
                        xSt.Cells.get_Range("C" + rowsint, missing).Value2 = i.Unit;
                        //q_dosage 单用量
                        xSt.Cells.get_Range("D" + rowsint, missing).Value2 = i.Q_Dosage;
                        // q_unitprice 单价
                        xSt.Cells.get_Range("E" + rowsint, missing).Value2 = i.Q_UnitPrice;
                        //q_price 金额
                        xSt.Cells.get_Range("F" + rowsint, missing).Value2 = i.Q_Price;
                        rowsint++;
                    }
                    //保存的时候会先保存在服务器上，然后再从服务器下载下来。
                   filepath = Server.MapPath(Request.ApplicationPath) + @"ShoesPic\报价单导出.xls";
                    xBk.Saved = true;
                    xBk.SaveCopyAs(filepath);
                    //退出excel

                    excel.Quit();
                    excel = null;
                    xBk = null;
                    xSt = null;
                    Process[] procs = Process.GetProcessesByName("excel");

                    foreach (Process pro in procs)
                    {
                        pro.Kill();//没有更好的方法,只有杀掉进程
                    }
                    GC.Collect();

                    System.IO.FileInfo file = new System.IO.FileInfo(filepath);
                    Response.Clear();
                    Response.Charset = "GB2312";
                    Response.ContentEncoding = System.Text.Encoding.UTF8;
                    // 添加头信息，为"文件下载/另存为"对话框指定默认文件名
                    Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name));
                    // 添加头信息，指定文件大小，让浏览器能够显示下载进度
                    Response.AddHeader("Content-Length", file.Length.ToString());

                    // 指定返回的是一个不能被客户端读取的流，必须被下载
                    Response.ContentType = "application/ms-excel";

                    // 把文件流发送到客户端
                    Response.WriteFile(file.FullName);
                    Response.Flush();//这个语句必须有，否则就不回弹出保存的对话框，搞了N久
                    // 停止页面的执行
                    Response.End();
                }
                catch (Exception ex)
                {
                }
                finally
                {
                    if (File.Exists(filepath))
                    {
                        File.Delete(filepath);
                    }
                }
            }
          
        }