using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace csdn
{
/// <summary>
/// WebForm54 的摘要说明。
/// </summary>
public class WebForm54 : System.Web.UI.Page
{
protected System.Web.UI.HtmlControls.HtmlGenericControl div_load;
protected System.Web.UI.WebControls.Button btn_startwork;
protected System.Web.UI.WebControls.Label lab_state;
protected System.Web.UI.WebControls.Label lab_jg;
protected work w;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(Session["work"]==null)
{
w=new work();
Session["work"]=w;
}
else
{
w=(work)Session["work"];
}
switch(w.State)
{
case 0:
{
this.div_load.Visible=false;
break;
}
case 1:
{
this.lab_state.Text=""+((TimeSpan)(DateTime.Now-w.StartTime)).TotalSeconds.ToString("0.00")+" 秒过去了,完成百分比:"+w.Percent+" %";
this.btn_startwork.Enabled=false;
Page.RegisterStartupScript("","<script>window.setTimeout('location.href=location.href',1000);</script>");
this.lab_jg.Text="";
break;
}
case 2:
{
this.lab_jg.Text="任务结束,并且成功执行所有操作,用时 "+((TimeSpan)(w.FinishTime-w.StartTime)).TotalSeconds+" 秒";
this.btn_startwork.Enabled=true;
this.div_load.Visible=false;
break;
}
case 3:
{
this.lab_jg.Text="任务结束,在"+((TimeSpan)(w.ErrorTime-w.StartTime)).TotalSeconds+"秒的时候发生错误导致任务失败'";
this.btn_startwork.Enabled=true;
this.div_load.Visible=false;
break;
}
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <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.btn_startwork.Click += new System.EventHandler(this.btn_startwork_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void btn_startwork_Click(object sender, System.EventArgs e)
{
if(w.State!=1)
{
this.btn_startwork.Enabled=false;
this.div_load.Visible=true;
w.runwork();
Page.RegisterStartupScript("","<script>location.href=location.href;</script>");
}
}
}
public class work
{
public int State=0;//0-没有开始,1-正在运行,2-成功结束,3-失败结束
public int Percent=0;//完成百分比
public DateTime StartTime;
public DateTime FinishTime;
public DateTime ErrorTime;
public void runwork()
{
lock(this)
{
if(State!=1)
{
State=1;
StartTime=DateTime.Now;
System.Threading.Thread thread=new System.Threading.Thread(new System.Threading.ThreadStart(dowork));
thread.Start();
}
}
}
private void dowork()
{
try
{
SqlConnection conn=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["conn"]);
SqlCommand cmd=new SqlCommand("Insert Into test (test)values('test')",conn);
conn.Open();
for(int p=0;p<100;p++)
{
for(int i=0;i<10;i++)
{
cmd.ExecuteNonQuery();
}
Percent=p;//这里就是定义百分比,你估计这个操作费多少时间定义多少百分比
}
conn.Close();
//以上代码执行一个比较消耗时间的数据库操作
State=2;
}
catch
{
ErrorTime=DateTime.Now;
Percent=0;
State=3;
}
finally
{
FinishTime=DateTime.Now;
Percent=0;
}
}
}
}
网管管理中的耗时操作,往往又是重复性的操作。比如说生成静态页面,往往要周期性的重新生成一遍。这种任务,使用程序自动执行来完成更符合我们的要求。
在ASP.NET中使用多线程结合
代码
// 程序的定期任务,每个任务都实现ISchedulerWork
public interface ISchedulerWork
{
void Execute();
}
//考核模块——考核个人通知邮件任务
public class EmaiSendingJob : ISchedulerWork
{
public void Execute()
{
;
}
}
//建立一个配置对象,用来存储要定期执行的任务和执行的时间间隔。
public class SchedulerConfiguration
{
//时间间隔 每天执行一次
private int sleepInterval;
//任务列表
private ArrayList jobs = new ArrayList();
public int SleepInterval { get { return sleepInterval; } }
public ArrayList Jobs { get { return jobs; } }
//调度配置类的构造函数
public SchedulerConfiguration(int newSleepInterval)
{
sleepInterval = newSleepInterval;
}
}
//调度类,定时执行配置对象的任务
public class Scheduler
{
private SchedulerConfiguration configuration = null;
public Scheduler(SchedulerConfiguration config)
{
configuration = config;
}
public void Start()
{
while (true)
{
//执行每一个任务
foreach (ISchedulerWork job in configuration.Jobs)
{
Thread myThread = new Thread(new ThreadStart(job.Execute));
myThread.Start();
Thread.Sleep(configuration.SleepInterval);
}
}
}
}
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