开发windows service完成SQL数据库的定时自动导出ACCESS

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开发windows service完成SQL数据库的定时自动导出ACCESS

2009年03月13日 ⁄ C# ⁄ 暂无评论 ⁄ 被围观阅读(1,279)+

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Timers;
using System.Data.SqlClient;
using System.Net.Mail;

namespace BakupOnTime
{
public partial class BackUpOnTime : ServiceBase
{
string[] tbNameArry;

public BackUpOnTime()
{
InitializeComponent();

if (!EventLog.SourceExists("MySource"))
{
EventLog.CreateEventSource("MySource", "Mylog");
}

eventLog1.Source = "MySource";

eventLog1.Log = "Mylog";
}

private string[] initTableNameArray()
{
string sqlCmdStr = "select name from sysobjects where xtype = \'U\' and name!=\'dtproperties\'";

SqlConnection sqlCon = new SqlConnection("Data Source=localhost;Initial Catalog=infopublic;Persist Security Info=True;User ID=sa;Password=xxxxx);

SqlCommand sqlCmd = new SqlCommand(sqlCmdStr, sqlCon);

SqlDataReader sqlDr;

sqlCon.Open();

try
{
sqlDr = sqlCmd.ExecuteReader();

string[] tbNameArray = new string[16];

for (int i = 0; i < 16; i++)
{
sqlDr.Read();

tbNameArray[i] = sqlDr[0].ToString();
}

return tbNameArray;
}
catch (SqlException ex)
{
eventLog1.WriteEntry(DateTime.Now.ToShortDateString() + ": " + ex.ToString());

return null;
}
}

private void sendMsg(string subject, string body)
{
try
{
SmtpClient client = new SmtpClient("邮件smtp服务器", 25);

client.Credentials = new System.Net.NetworkCredential("qq号", "qq密码");

MailMessage msg = new MailMessage("发件箱地址", "收件箱地址");

msg.SubjectEncoding = System.Text.Encoding.UTF8;

msg.BodyEncoding = System.Text.Encoding.UTF8;

msg.Subject = subject;

msg.Body = body;

client.Send(msg);

msg.Dispose();
}
catch (Exception ex)
{
eventLog1.WriteEntry(DateTime.Now.ToShortDateString() + ": " + ex.ToString());
}
}

protected override void OnStart(string[] args)
{
tbNameArry = initTableNameArray();

timer1.Enabled = true;
}

protected override void OnStop()
{
timer1.Enabled = false;
}

private void timer1_Elapsed(object sender, ElapsedEventArgs e)
{
timer1.Enabled = false;

string dayofweek = DateTime.Now.DayOfWeek.ToString();

string dir = @"d:"; //导出后的access文件存放地址

string sourceFileName = dir + "data.mdb";

string destinationFileName = dir + DateTime.Now.ToShortDateString() + ".mdb";

string msgBody = "";

int recordsCount = 0;

//检查导出时间

if (dayofweek == "Friday" & DateTime.Now.Hour >= 17)
{
Console.WriteLine(DateTime.Now.ToShortDateString() + " " + DateTime.Now.DayOfWeek.ToString() + "\\n");

((Timer)sender).Interval = 1000 * 60 * 60 * 24 * 7;

Process copyProcess = new Process();

ProcessStartInfo copyProcessStarInfor = new ProcessStartInfo("cmd.exe");

copyProcessStarInfor.Arguments = "/c copy " + sourceFileName + " " + destinationFileName;

copyProcess.StartInfo = copyProcessStarInfor;

copyProcess.Start();

while (!System.IO.File.Exists(destinationFileName))
{
System.Threading.Thread.Sleep(2000);
}

SqlConnection sqlCon = new SqlConnection("Data Source=localhost;Initial Catalog=infopublic;Persist Security Info=True;User ID=sa;Password=xxzx6889;Asynchronous Processing=true");

SqlCommand sqlCmd = new SqlCommand();

sqlCmd.CommandTimeout = 600000;

try
{
sqlCon.Open();
}
catch (Exception ex)
{
eventLog1.WriteEntry(ex.ToString());
}

try
{
for (int i = 0; i < 16; i++)
{
string tabName = tbNameArry[i];

string sqlCmdStr = "insert into OpenRowSet(\'Microsoft.Jet.OLEDB.4.0\',\'" + destinationFileName + "\';\'Admin\';\'\',\'select * from " + tabName + "\') select * from " + tabName + "";

sqlCmd.CommandText = sqlCmdStr;

sqlCmd.Connection = sqlCon;

IAsyncResult result = sqlCmd.BeginExecuteNonQuery();

while (!result.IsCompleted)
{
System.Threading.Thread.Sleep(20000);
}

recordsCount = sqlCmd.EndExecuteNonQuery(result);

msgBody = msgBody + "\\n" + tabName + ": " + recordsCount + " Records";
}

eventLog1.WriteEntry(DateTime.Now.ToShortDateString() + ": " + msgBody);

sendMsg("Notice about the success of data transfer", msgBody);
}
catch (Exception ex)
{
eventLog1.WriteEntry(DateTime.Now.ToShortDateString() + ": " + ex.ToString());

((Timer)sender).Enabled = false;

sendMsg("Error Notice", ex.ToString());
}
}

//根据当前时间，重新设置interval，以降低timer的运行次数
else if (dayofweek == "Friday" & DateTime.Now.Hour <= 17)
{
if (DateTime.Now.Minute <= 10)
{
((Timer)sender).Interval = 1000 * 60 * 60;
}
else
{
((Timer)sender).Interval = 1000 * 60 * 10;
}
}
else if (dayofweek != "Friday" & DateTime.Now.Hour <= 17)
{
((Timer)sender).Interval = 1000 * 60 * 60 * 24;
}
else if (dayofweek != "Friday" & DateTime.Now.Hour >= 17)
{
((Timer)sender).Interval = 1000 * 60 * 60;
}

timer1.Enabled = true;
}
}
}