how to active the FileSystemWatcher object????

  • Thread starter Thread starter Jet Leung
  • Start date Start date
J

Jet Leung

Hi all,
I had made a program to watching files in my directory. I had used a
instance of FileSystemWatcher to do my work.And I had add some events of the
FileSystemWatcher , for example onChange, onRename and so on.
And I had made this program as a windows service.As I know, if I delete a
file from my directory, this behavior will active this program and do
something what I want to do. But after I install this program as a windows
service and doing some behavior in the directory which I had set as the
property of the instance of FileSystemWatcher, this program will not do my
work for me.How can I solve it?
Acturaly, after I installed this program as the windows service and start
the debug in vs.net 2003 , it won't active the break point where I had set
the break point at the onChanged event. And I had added the handler of this
event.
 
EnableRaisingEvents property. The majority of the users of this API in
production
scenarios want to configure the object once, and then enable/disable the event
notifications as needed for performance reasons. I remember some mail about
specific scenarios when I was working on the .NET QuickStarts, but I couldn't
tell
you more precisely why they changed the API to have this property false by
default.
 
Hi jet,

Here is some code that is working in a similar environment.
Take a look that all this service does depend of the FileSystemWatcher
events.
Note:
This may not compile as is as I removed lot of code !!

HTH,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation




public class DismexOrderDispatcher : System.ServiceProcess.ServiceBase
{

protected override void OnStart(string[] args)
{
// This trigger the static constructor of the DataProvider class
DataProvider.Callme();
}


}

public class DataProvider
{

static FileSystemWatcher watcher=null;


static public void callme(){}
//This function "watch" a directory waiting for orders to arrive
public static void WatchOrdersFolder()
{
try
{
if ( watcher!=null) return;
watcher = new FileSystemWatcher();

watcher.Path = Config.ImportStorageFolder;
watcher.NotifyFilter = NotifyFilters.FileName
|NotifyFilters.CreationTime;
watcher.Filter = "*.flag";

// Add event handlers.
watcher.Created += new FileSystemEventHandler( AddedOrderFile);
watcher.EnableRaisingEvents = true;
}
catch(Exception ex)
{
Logger.CreateLog( "Error in WatchOrdersFolder e.m:" + ex.Message + "
e.ST:" + ex.StackTrace, System.Diagnostics.EventLogEntryType.Error );
}

}

static DataProvider()
{
try
{

//Set the FileFolderWatcher in the directory where the network deamon
put the files
WatchOrdersFolder();
}
catch( Exception e)
{
}

}

}
 
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