My service move my file Location but doesn't upload the data in sql server... here is my code

<pre>using System;
using System.ServiceProcess;
using System.Data.SqlClient;
using System.IO;
using System.Timers;
using System.Configuration;
using System.Data.OleDb;
using System.Data;
 

 

namespace MoveToDesiredDest
{
    publicpartialclass Service1 : ServiceBase
    {
        long delay = 5000;
        protectedstring LogPath = ConfigurationManager.AppSettings["LogPath"];
        protectedstring MoveFilePathPath = ConfigurationManager.AppSettings["MovePath"];
 
        public Service1()
        {
            InitializeComponent();
 

            Timer timer1 = new Timer();
            timer1.Elapsed += new ElapsedEventHandler(OnElapsedTime);
            timer1.Interval = delay;
            timer1.Enabled = true;
            timer1.Start();
        }
 
        protectedoverridevoid OnStart(string[] args)
        {
            WriteLog("Service started");
 

            if (!Directory.Exists(LogPath))
            {
                Directory.CreateDirectory(LogPath);
            }
 
            try
            {
 
                delay = Int32.Parse(ConfigurationManager.AppSettings["IntervalInSeconds"]) * 1000;
            }
            catch
            {
                WriteLog("IntervalInSeconds key/value incorrect.");
            }
 

            if (delay <5000)
            {
                WriteLog("Sleep time too short: Changed to default(5 secs).");
                delay = 5000;
            }
 
            //Timer timer1 = new Timer();//timer1.Elapsed += new ElapsedEventHandler(OnElapsedTime);//timer1.Interval = delay;//timer1.Enabled = true; 

        }
 
        privatevoid OnElapsedTime(object source, ElapsedEventArgs e)
        {
            write();
            Upload();
        }
      
        privatevoid write() 
        {
 
            string sourcepath = ConfigurationManager.AppSettings["sourcepath"];
            WriteLog("Set source path");
            string[] sourcefiles = Directory.GetFiles(sourcepath);
            WriteLog("Get soutce path file");
 
            foreach (string childfile in sourcefiles)
            {
                WriteLog("Start to find file from loop");
                string sourceFileName = new FileInfo(childfile).Name;
                string destinationPath = ConfigurationManager.AppSettings["destinationPath"];
 
                string destinationFileName = sourceFileName;
                string sourceFile = Path.Combine(sourcepath, sourceFileName);
                WriteLog("Get file from source to destination");
                string destinationFile = Path.Combine(destinationPath, destinationFileName);
                WriteLog("Ready to copy");
                File.Copy(sourceFile, destinationFile, true);
                WriteLog("File copied");
                File.Delete(sourceFile);
                WriteLog("File deleted");
            }
        }
        protectedvoid Upload()
        {
            string excelPath = ConfigurationManager.AppSettings["ExcelPath"];
            DirectoryInfo d = new DirectoryInfo(excelPath);
            FileInfo[] Files = d.GetFiles("*.xls");
 

 
            string str = "";
            WriteLog("ready to enter into loop");
            foreach (FileInfo file in Files)
            {
                str = file.Name;
                string sourceFilePath = ConfigurationManager.AppSettings["SourceFilePath"];
                string SourceFileName = Path.Combine(sourceFilePath, str);
 
                string destinationFilePath = ConfigurationManager.AppSettings["MovePath"];
 
                string destinationFileName = destinationFilePath + str;
 

 

                WriteLog("get file :" + str);
                String strConnection = ConfigurationManager.AppSettings["constr"];
                WriteLog("declare database connection");
                string path = excelPath + str;
 
                // string excelConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 8.0;HDR =YES;Persist Security Info=False";string excelConnectionString = @"Microsoft.Jet.OLEDB.4.0;Data Source=" + path +";Extended Properties=Excel 8.0;HDR =YES;Persist Security Info=False";
                WriteLog("declare excel oledb connection");
                OleDbConnection excelConnection = new OleDbConnection(excelConnectionString);
 
                OleDbCommand cmd = new OleDbCommand("Select [ID],[Name] from [Sheet1$]", excelConnection);
 
                    //("Select [Department No],[Department],[Emp No],[Name],[Date],[First],[Last] from [Sheet1$]", excelConnection); 
                excelConnection.Open();
                WriteLog("oledb open");
                OleDbDataReader dReader;
 
                dReader = cmd.ExecuteReader();
 
                SqlBulkCopy sqlBulk = new SqlBulkCopy(strConnection);
 
                sqlBulk.DestinationTableName = "Test1";
                WriteLog("ready to insert into database");
                sqlBulk.WriteToServer(dReader);
                WriteLog("data inserted");
                excelConnection.Close();
                WriteLog("Process completed");
                File.Move(SourceFileName, destinationFileName);
                WriteLog("File moved to bak folder");
                excelConnection.Close();
                cmd.Dispose();
            }
        }
 
       
        protectedoverridevoid OnStop()
        {
            WriteLog("service stopped");
        }
 

        protectedvoid WriteLog(string Msg)
        {
            FileStream fs = new FileStream(LogPath + "\\" + System.DateTime.Today.ToString("yyyyMMdd") + ".log", FileMode.OpenOrCreate, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fs);
            sw.BaseStream.Seek(0, SeekOrigin.End);
            sw.WriteLine(System.DateTime.Now.ToString() + ": " + Msg);
            sw.Close();
            sw.Dispose();
            fs.Close();
            fs.Dispose();
        }
    }
}