File System Monitor Question

  • Thread starter Thread starter Jack David
  • Start date Start date
J

Jack David

Using the code below I am able to monitor a single directory for a new file
and then kick-off a process to deal with the file. The question is??? How
would I modify this code to be able to monitor a couple of different
directories and based upon the directory where the new file is created
kick-off a process

Example:

File A in Directory B starts process C

File F in Directory X starts process Y

Thanks









using System;

using System.IO;

using FileProcessor;



namespace DirectoryMonitorConsole

{

/// <summary>

/// Summary description for Class1.

/// </summary>

public class DirectoryMonitorConsole

{

private File_Processor objFileProcessor;

/// <summary>

/// Used as a test application for the Directory Monitor Service

/// </summary>

[STAThread]

public static void Main()

{

// Define the directory to monitor

FileSystemWatcher watcher = new FileSystemWatcher();

watcher.Path = @"c:\FTPIN\PSIFL";

//watcher.Path = @"d:\FTPIN\PSIFL";

// Define what to monitor

watcher.NotifyFilter = NotifyFilters.DirectoryName | NotifyFilters.FileName;

// Define file filter

watcher.Filter = "*.*";// look for any new file

// Define event handlers

watcher.Created += new FileSystemEventHandler(OnChanged);

// Begin watching the directory

watcher.EnableRaisingEvents = true;

// Wait for the user to quit the program

Console.WriteLine(@"Press q to quit this program");

while(Console.Read()!='q');

}


/// <summary>

/// Event handler for a new file put into the directory that is being
monitored

/// </summary>

/// <param name="source"></param>

/// <param name="e"></param>

private static void OnChanged(object source, FileSystemEventArgs e)

{

Console.WriteLine("File: {0} {1}!", e.FullPath, e.ChangeType);

// Get the name of the new file

// Make a reference to a directory

DirectoryInfo di = new DirectoryInfo(@"c:\FTPIN\PSIFL");

//DirectoryInfo di = new DirectoryInfo(@"c:\FTPIN\PSIFL");

// Get a reference for each file in the directory

FileInfo[] fi = di.GetFiles();

string strFileName = fi[0].ToString();

fi = null;

di = null;

File_Processor objFileProcessor = new
FileProcessor.File_Processor(strFileName);

objFileProcessor = null;

}

}

}
 
Jack,

I would just take a command-line argument specifying the directory to
watch. That way, when you kick off the process, you can pass in the new
directory that that process should watch.

Hope this helps.
 
There are two ways I can think of to solve this problem. One way would be
to create another FileSystemWatcher for the other directory. The other
option would be to have you FileSystemWatcher monitor a directory higher up
in the hierarchy and then start the appropriate process based on where the
file was created. Something like this (pseudocode):

Monitor c:\root1
if new file created in c:\root1\subdir1 do process A
else if new file created in c:\root1\subdir2 do process B
else ...

Of course, this watches all files created in c:\root1, so depending on how
much activity that directory gets this might be more expensive than
watching the two specific directories. This also assumes that the
directories to watch are located in a common directory. One could watch
the root drive, but I think that would be way too expensive, but I don't
have any data to back that up.

hth

-Joel
--------------------
Reply-To: "Jack David" <[email protected]>
From: "Jack David" <[email protected]>
Subject: File System Monitor Question
Date: Mon, 10 May 2004 11:25:29 -0400
Lines: 138
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.languages.csharp
NNTP-Posting-Host: 216.242.151.44
Path: cpmsftngxa10.phx.gbl!TK2MSFTFEED01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP11
phx.gbl
Xref: cpmsftngxa10.phx.gbl microsoft.public.dotnet.languages.csharp:243086
X-Tomcat-NG: microsoft.public.dotnet.languages.csharp

Using the code below I am able to monitor a single directory for a new file
and then kick-off a process to deal with the file. The question is??? How
would I modify this code to be able to monitor a couple of different
directories and based upon the directory where the new file is created
kick-off a process

Example:

File A in Directory B starts process C

File F in Directory X starts process Y

Thanks









using System;

using System.IO;

using FileProcessor;



namespace DirectoryMonitorConsole

{

/// <summary>

/// Summary description for Class1.

/// </summary>

public class DirectoryMonitorConsole

{

private File_Processor objFileProcessor;

/// <summary>

/// Used as a test application for the Directory Monitor Service

/// </summary>

[STAThread]

public static void Main()

{

// Define the directory to monitor

FileSystemWatcher watcher = new FileSystemWatcher();

watcher.Path = @"c:\FTPIN\PSIFL";

//watcher.Path = @"d:\FTPIN\PSIFL";

// Define what to monitor

watcher.NotifyFilter = NotifyFilters.DirectoryName | NotifyFilters.FileName;

// Define file filter

watcher.Filter = "*.*";// look for any new file

// Define event handlers

watcher.Created += new FileSystemEventHandler(OnChanged);

// Begin watching the directory

watcher.EnableRaisingEvents = true;

// Wait for the user to quit the program

Console.WriteLine(@"Press q to quit this program");

while(Console.Read()!='q');

}


/// <summary>

/// Event handler for a new file put into the directory that is being
monitored

/// </summary>

/// <param name="source"></param>

/// <param name="e"></param>

private static void OnChanged(object source, FileSystemEventArgs e)

{

Console.WriteLine("File: {0} {1}!", e.FullPath, e.ChangeType);

// Get the name of the new file

// Make a reference to a directory

DirectoryInfo di = new DirectoryInfo(@"c:\FTPIN\PSIFL");

//DirectoryInfo di = new DirectoryInfo(@"c:\FTPIN\PSIFL");

// Get a reference for each file in the directory

FileInfo[] fi = di.GetFiles();

string strFileName = fi[0].ToString();

fi = null;

di = null;

File_Processor objFileProcessor = new
FileProcessor.File_Processor(strFileName);

objFileProcessor = null;

}

}

}
Click to expand...
 
Back
Top