Getting proper events for FileSystemWatcher

Question

1.00/5 (1 vote)

See more:

Hi everyone, I am creating a small utility which will provide me the notifications based on the file changes. I wish to monitor the directory on following two conditions:

1. User copies and pastes a file to the directory.
2. User creates a new file in the directory.
3. User modifies the file in the directory.

I am able to achieve the points 1 and 2 with the following code:

C#

private void initializeWatcher(string path, string filter = "*.pdf")
{
    //If watcher is null, we create a new instance.
    watcher = watcher ?? new FileSystemWatcher();
    watcher.Filter = filter;
    watcher.Path = path;
    watcher.NotifyFilter = NotifyFilters.FileName;
    watcher.Changed += OnChanged;
    watcher.Created += OnChanged;
    watcher.Deleted += OnChanged;
}

I think that I need to modify the watcher.NotifyFilter property to achieve it. Can you please guide me how to achieve the third one?

Posted 8-Apr-13 1:59am

Pankaj Nikam

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Manfred Rudolf Bihy · Answer 1 · 2013-04-08T02:08:00

Solution 1

Didn't have the time to read the MSDN documents?

Excerpt from MDSN:

C#

/* Watch for changes in LastAccess and LastWrite times, and
   the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
   | NotifyFilters.FileName | NotifyFilters.DirectoryName;

Read all about it here: FileSystemWatcher.NotifyFilter Property[^].

Regards,

— Manfred

Posted 8-Apr-13 2:08am

Manfred Rudolf Bihy

Comments

Pankaj Nikam 8-Apr-13 8:20am

I read the documentation for the notify filter over here http://msdn.microsoft.com/en-us/library/system.io.notifyfilters.aspx
However I could not find anything for copy and paste. The problem is that if I set the property to LastWrite, I get the event fired twice.