[RESOLVED] FileSystemWatcher not detecting change in file

[adamlonsdale]

Hey there,

I've written the following code. It works fine for creating, deleting and renaming files. However when I set a file to read only, or modify the file (i.e open it in notepad and change the contents) nothing happens (it doesn't hit the change breakpoint)

I have the following code:

Private fsw As FileSystemWatcher
 
 Public Sub WatchFiles(ByVal tblMappings As DataSet)
        For Each row As DataRow In tblMappings.Tables(0).Rows
            Try
                fsw = New FileSystemWatcher
                Dim FolderPath As String = row.Item(2)
                If Directory.Exists(FolderPath) Then
 
                    fsw.Path = FolderPath
                    fsw.NotifyFilter = IO.NotifyFilters.DirectoryName
                    fsw.NotifyFilter = fsw.NotifyFilter Or IO.NotifyFilters.FileName
                    fsw.NotifyFilter = fsw.NotifyFilter Or IO.NotifyFilters.Attributes
                    fsw.NotifyFilter = fsw.NotifyFilter Or IO.NotifyFilters.LastWrite
                    fsw.NotifyFilter = fsw.NotifyFilter Or IO.NotifyFilters.Size
                    fsw.NotifyFilter = fsw.NotifyFilter Or IO.NotifyFilters.LastAccess
                    fsw.NotifyFilter = NotifyFilters.LastAccess Or NotifyFilters.DirectoryName Or NotifyFilters.FileName Or NotifyFilters.CreationTime
                    fsw.IncludeSubdirectories = False
                    fsw.EnableRaisingEvents = True
 
                    AddHandler fsw.Changed, AddressOf fsw_changed
                    AddHandler fsw.Created, AddressOf fsw_created
                    AddHandler fsw.Renamed, AddressOf fsw_renamed
                    AddHandler fsw.Deleted, AddressOf fsw_deleted
                    fsw.EnableRaisingEvents = True
                End If
 
            Catch ex As Exception
                MessageBox.Show(ex.Message)
            End Try
        Next
 
    End Sub
    
 Private Sub fsw_changed(ByVal sender As Object, ByVal e As FileSystemEventArgs)
        Dim db As New DatabaseFunctions
        db.AddToLog(DatabaseFunctions.PendingType.Change, e.FullPath, GetServerFolderFromPCFolder(ftp.GetFolder(e.FullPath), _tblMappings), String.Empty, _strUsername, _strPassword, _strDomain, _strAusername, _tblMappings)
    End Sub

Does anybody have any ideas as to whats going wrong?

Regards,

Adam.

[adamlonsdale]

Hmm so it seems to hit this if I move a file (moving a file does change - delete - delete - create). So it's not a question of the actual plumbing of the code. I think it is something to do with the notifyfilter.

Adam.

[kaliman79912]

Are you refilling the dataset?

[adamlonsdale]

Hey!

Have just discovered that the issue is with this line:
fsw.NotifyFilter = NotifyFilters.LastAccess Or NotifyFilters.DirectoryName Or NotifyFilters.FileName Or NotifyFilters.CreationTime

Instead of using &= I've used =. Which means that all the filters (i.e size and lastwrite) that i set before were scrapped and replaced with these! Silly mistake I know!

Thanks

Adam.