How do I best monitor a selected folder (and subfolder) for changes?

Hi all

Do C# and .net have some way to monitor a folder in Windows XP/Windows
2000. I want to mirror the content of the folder, including subfolders
(if any exsists) to another place, and I want to mirror the changes as
they happen.

re: How do I best monitor a selected folder (and subfolder) for changes?

The below code monitors for xml file, you could modify and use it how u need
it

fsWatcher = new System.IO.FileSystemWatcher(strDirectoryName);
fsWatcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
fsWatcher.Filter = "*.xml";
fsWatcher.Created += new FileSystemEventHandler(OnNewFileAdded);
fsWatcher.Changed += new FileSystemEventHandler(OnFileChanged);
fsWatcher.EnableRaisingEvents = true;

public void OnNewFileAdded(object source, FileSystemEventArgs e)
{
//Your code
}

public void OnFileChanged(object source, FileSystemEventArgs e)
{
//Your code
}

--
Tarkeshwar L
..Net Programmer
Fifth Generation Technologies

"Egil Hansen" <egil@dailyrush.dk> wrote in message
news:1099388449.134079.112440@z14g2000cwz.googlegr oups.com...[color=blue]
> Hi all
>
> Do C# and .net have some way to monitor a folder in Windows XP/Windows
> 2000. I want to mirror the content of the folder, including subfolders
> (if any exsists) to another place, and I want to mirror the changes as
> they happen.
>[/color]

re: How do I best monitor a selected folder (and subfolder) for changes?

Hi Egil
You can use classes of the .net to list the directory info get the folder
info ( of all files with in it . then you can save that info somewhere (
may be save the file names as strings and write them on a text file) . then
periodaclly check your folder and compare for changing
This snippet of code list content of directory in a tree view
tn = new TreeNode(@"C:\");
tn.Tag="1";

tvFileSystem.Nodes.Add(tn);
DirectoryInfo d = new DirectoryInfo("C:\\");
DirectoryInfo[] dd= d.GetDirectories();
FileInfo[] fn = d.GetFiles();
foreach (DirectoryInfo myD in dd) {
TreeNode myTree = new TreeNode(myD.Name);
myTree.Nodes.Add(new TreeNode("unexplored"));
myTree.Tag="0";

tn.Nodes.Add(myTree);
}
foreach (FileInfo myF in fn)
{
tn.Nodes.Add(new TreeNode(myF.Name));
}
tvFileSystem.Update();
tvFileSystem.Visible=true;

you might need to write your application as a windows service if you want
this check to be running at all time.

Mohamed Mahfouz
MEA Developer Support Center
ITworx on behalf of Microsoft EMEA GTSC

re: How do I best monitor a selected folder (and subfolder) for changes?

Use the FileSystemWatcher class. This only monitors a single folder, so you
will have to find the subfolders and monitor them manually to see if their
contents change. Directory.GetDirectories will give you a list of
subfolders.

--Liam.

"Egil Hansen" <egil@dailyrush.dk> wrote in message
news:1099388449.134079.112440@z14g2000cwz.googlegr oups.com...[color=blue]
> Hi all
>
> Do C# and .net have some way to monitor a folder in Windows XP/Windows
> 2000. I want to mirror the content of the folder, including subfolders
> (if any exsists) to another place, and I want to mirror the changes as
> they happen.
>[/color]

re: How do I best monitor a selected folder (and subfolder) for changes?

Thank you all for the quick replies.

Best regards, Egil.