StreamWriter sw = null;            try            {                //string sql = "SELECT ProductID,ProductMode,ProductName,Warranty,Weight,ParentMode,NetWeight,WeightUnit FROM Product";                //DataSet ds = DBHelper.RunSQLReturnDS(sql);                string filePath = Server.MapPath("/csv");                if (!Directory.Exists(filePath))                {                    Directory.CreateDirectory(filePath);                }                string name = filePath + "/labelprint_template.csv";                if (File.Exists(name))                {                    File.Delete(name);                }                sw = new StreamWriter(name, true, System.Text.Encoding.UTF8, 200);                StringBuilder sbTitle = new StringBuilder();                sbTitle.Append("Check,Status,Bill NO,Download Batch NO,Order Time,E-source,");                sbTitle.Append("Print Date,Warehouse Name,Item #,Item Name,Listing Item Name,");                sbTitle.Append("ebayTransactionID,ebayItemID,Company Name,Contact,Address 1,Address 2,");                sbTitle.Append("City,State,Zip,Phone,Email,Quantity,Weight,Length,Width,Height,");                sbTitle.Append("Price,Signature,ServiceType,Sender_company,Sender_contact,Sender_email,");                sbTitle.Append("Sender_code,Sender_address1,Sender_address2,Sender_city,Sender_zip,Sender_state");                sw.WriteLine(sbTitle.ToString());                StringBuilder sbContent = new StringBuilder();                sbContent.Append(",Normal,Jasya Siliceo-Kellman,,,,");                sbContent.Append(",,Jan-64,Wooden Playpen Recall Parts,,");                sbContent.Append(",,Aosom,Aosom,21447 SW 108th Ave,,");                sbContent.Append("Tualatin,OR,97062,5036120860,service@aosom.com,1,12,39,27,3,");                sbContent.Append(",No,GND,,Jasya Siliceo-Kellman,jbsiliceo@gmail.com,");                sbContent.Append(",75 West End Avenue,R-34D,New York,10023,NY");                sw.WriteLine(sbContent.ToString());                Response.Write("生成成功");            }            catch (Exception ex)            {                Response.Write(ex.Message);            }            finally            {                sw.Close();            }