C# .net下不打开页面定时执行程序

(wanghero原创)

我在用C#.net开发BS结构程序中遇到一个问题,怎样能够不打开页面的情况下查询数据库并执行特定的操作,经过网上查询和试验得出如下代码

更改 Global.asax.cs 文件如下

using System;
using System.Collections;
using System.ComponentModel;
using System.Web;
using System.Web.SessionState;
using System.Timers;
using System.Data;
using System.Data.SqlClient;

namespace SMS_joke
{
/// <summary>
/// Global 的摘要说明。
/// </summary>
public class Global : System.Web.HttpApplication
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;

public Global()
{
InitializeComponent();
}

protected void Application_Start(Object sender, EventArgs e)
{
SetTimer();
}

protected void Session_Start(Object sender, EventArgs e)
{

}

protected void Application_BeginRequest(Object sender, EventArgs e)
{

}

protected void Application_EndRequest(Object sender, EventArgs e)
{

}

protected void Application_AuthenticateRequest(Object sender, EventArgs e)
{

}

protected void Application_Error(Object sender, EventArgs e)
{

}

protected void Session_End(Object sender, EventArgs e)
{

}

protected void Application_End(Object sender, EventArgs e)
{

}
public static void SetTimer()
{
System.Timers.Timer aTimer = new System.Timers.Timer();

aTimer.Elapsed += new ElapsedEventHandler(OnTimer);

aTimer.Interval = 5000;
aTimer.Enabled = true;
}

public static void OnTimer(Object source, ElapsedEventArgs e)
{
System.Data.SqlClient.SqlConnection sqlConnection1;
System.Data.SqlClient.SqlCommand sqlCommand1;
string customSetting = System.Configuration.ConfigurationSettings.AppSettings["SqlStr"];
sqlConnection1 = new SqlConnection();
sqlConnection1.ConnectionString = customSetting ;
sqlConnection1.Open();
string str = "UPDATE TABLE1 SET js = js + 1 " ;

sqlCommand1 = new SqlCommand(str,sqlConnection1) ;
sqlCommand1.ExecuteNonQuery();

sqlConnection1.Close();

}
#region Web 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
}
#endregion
}
}