C# execute method every 5 seconds.: C#

by: jinalPosted on 2009-07-18 at 11:07:37ID: 24886776

Create window service application .

That is best solution if you want to run application in background.

In Window Service you can use System.Timers.Timer class for that purpose.

by: dericstonePosted on 2009-07-18 at 11:07:45ID: 24886777

If you're using Windows.Forms, you can use a Windows.Forms.Timer. Otherwise, the best bet is probably a new thread with a 5 second sleep.

System.Windows.Forms.Timer timer;
this.timer = new System.Windows.Forms.Timer(this.components);
this.timer.Interval = 5000;
this.timer.Tick += new System.EventHandler(this.timer_Tick);
...
this.timer.Start();
...
private void timer_Tick(object sender, System.EventArgs e)
{
  // process file here
}

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by: keustermansPosted on 2009-07-19 at 23:36:18ID: 24892782

What you need here are 2 steps. The reason for this is that the file attributes can be altered and this can lead to a file not being deleted.

I would create 2 windows services and they should execute the following steps
The first service should implement a filesystemwatcher with which I can log the creation times of the files probably to database, and the 2nd windows service will execute every 5 seconds query the database for any files older then 30 seconds, delete the files and the entries into the database. If you want to keep a history on what was created and deleted then you can keep the entries in the database and just add the deletion time to the affected entries.

by: keustermansPosted on 2009-07-19 at 23:41:28ID: 24892806

By the way you could also implement both steps in one windows service if you whish to. I would prefer 2 as it would be possilble to run them individually and switch them off individualy. Eg you might want to log file creation and not delete files for a period of time. 2 services will allow you to switch of the deletion service and keep on logging. With one servoce you would have to change your code to do that.

by: AtourayPosted on 2009-07-20 at 02:23:02ID: 24893412

On my visual studio 2008 I cannot get the methodTick. I need the solution as am very new to windows services. Even if it's not the whole solution but at least a startup.

Thanks.

by: AtourayPosted on 2009-07-20 at 02:58:58ID: 24893605

I've been able to start and made some progress I started writing the service. I can now see Tick method after using the windows forms time from the toolbox. Now I need to know how to install the service and also have some configuration files for the end user.

by: keustermansPosted on 2009-07-20 at 03:19:38ID: 24893681

Hi there you should be using the System.Timer timer and the elapsed event.
using System.Timers;
Timer deleteTimer = new Timer();
deleteTimer.Elapsed+=new ElapsedEventHandler(deleteTimer_Elapsed);

protected void deleteTimer_Elapsed(object sender, ElapsedEventArgs e)
{
//Delete files here.
}

After all Windows Forms controls belong on Windows Forms and not windows services as they have no visual component.

To instsall the service you need to firstly add a service installer class. Once you compile your service you can install it using the installutil command in your visual studio command prompt: navigate to the folder where the executable is and then run the following command to install the service
'installutil /i MyService.exe'

to uninstall run command 'installutil /u MyService.exe.

[RunInstaller(true)]
public class WindowsServiceInstaller : Installer
{
/// <summary>
/// Public Constructor for WindowsServiceInstaller.
/// - Put all of your Initialization code here.
/// </summary>
public WindowsServiceInstaller()
{
ServiceProcessInstaller serviceProcessInstaller =
new ServiceProcessInstaller();
ServiceInstaller serviceInstaller = new ServiceInstaller();

//# Service Account Information
serviceProcessInstaller.Account = ServiceAccount.LocalSystem;
//# Service Information
serviceInstaller.DisplayName = "My New C# Windows Service";
serviceInstaller.StartType = ServiceStartMode.Automatic;

//# This must be identical to the WindowsService.ServiceBase name
//# set in the constructor of WindowsService.cs
serviceInstaller.ServiceName = "My Windows Service";

this.Installers.Add(serviceProcessInstaller);
this.Installers.Add(serviceInstaller);
}
}

by: AtourayPosted on 2009-07-20 at 10:52:41ID: 24897283

Below is my code but it's not working installed the service successfully and started it successfully but the files are not deleted after 5 seconds. Am I missing something? The problem is the timer, if I place the delete code above the time whenever the script starts the files are deleted but the timer execution is not working.

namespace ImageCleaner
{
    public partial class imgCleaner : ServiceBase
    {
        private String pathImages = ConfigurationSettings.AppSettings["folderPath"];
        public imgCleaner()
        {
            InitializeComponent();
            Timer timer = new Timer();
            //CleanImageFolder("C:\\ImageCheck");
            timer.Interval = 5000;
            timer.Start();
            timer.Elapsed += new ElapsedEventHandler(this.timer_Tick);
            
        }
 
        protected override void OnStart(string[] args)
        {
        }
 
        protected override void OnStop()
        {
        }
        private void timer_Tick(object sender, EventArgs e)
        {
            CleanImageFolder("C:\\ImageCheck");
        }
        
        private void CleanImageFolder(String imgPath)
        {
            string imgFolder = imgPath;
            string[] imgList = Directory.GetFiles(imgFolder, "*");
            foreach (string img in imgList)
            {
                FileInfo imgInfo = new FileInfo(img);
                if (imgInfo.LastWriteTime < DateTime.Now.AddSeconds(-30))
                {
                    imgInfo.Delete();
                }
            }
        }
        
    }
}

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by: jinalPosted on 2009-07-20 at 10:55:45ID: 24897306

 private String pathImages = ConfigurationSettings.AppSettings["folderPath"];
private bool processst = false;
        public imgCleaner()
        {
            InitializeComponent();
            Timer timer = new Timer();
            //CleanImageFolder("C:\\ImageCheck");
            timer.Interval = 5000;
            timer.Enable = true; 
            timer.Start();
            timer.Elapsed += new ElapsedEventHandler(this.timer_Tick);
            
        }
 
        protected override void OnStart(string[] args)
        {
        }
 
        protected override void OnStop()
        {
        }
        private void timer_Tick(object sender, EventArgs e)
        {
            if(!processst)
            {
            processst = true;
            CleanImageFolder("C:\\ImageCheck");
            processst = false; 
            }
        }
        
        private void CleanImageFolder(String imgPath)
        {
            string imgFolder = imgPath;
            string[] imgList = Directory.GetFiles(imgFolder, "*");
            foreach (string img in imgList)
            {
                FileInfo imgInfo = new FileInfo(img);
                if (imgInfo.LastWriteTime < DateTime.Now.AddSeconds(-30))
                {
                    imgInfo.Delete();
                }
            }
        }

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by: AtourayPosted on 2009-07-20 at 11:33:11ID: 24897628

Thanks a lot it's working now I need to be install to the client machine which has no visual studio otherwise I would have used installutil to install. Any ideas how to do this?

by: jinalPosted on 2009-07-20 at 13:57:15ID: 24898966

Yes...

http://dotnetstep.blogspot.com/2009/06/install-window-service-without-using.html

I think your work is done ....

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C# execute method every 5 seconds.

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