Hi again,
Im using vb 2005
Im using this code to watch a folder and log any changes etc... -
Imports System.IO
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Imports System.Diagnostics
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Public Class Form1
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Public watchfolder As FileSystemWatcher
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Private Sub btn_startwatch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_startwatch.Click
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watchfolder = New System.IO.FileSystemWatcher()
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'this is the path we want to monitor
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watchfolder.Path = txt_watchpath.Text
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'Add a list of Filter we want to specify
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'make sure you use OR for each Filter as we need to
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'all of those
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watchfolder.NotifyFilter = IO.NotifyFilters.DirectoryName
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watchfolder.NotifyFilter = watchfolder.NotifyFilter Or _
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IO.NotifyFilters.FileName
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watchfolder.NotifyFilter = watchfolder.NotifyFilter Or _
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IO.NotifyFilters.Attributes
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' add the handler to each event
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AddHandler watchfolder.Changed, AddressOf logchange
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AddHandler watchfolder.Created, AddressOf logchange
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AddHandler watchfolder.Deleted, AddressOf logchange
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' add the rename handler as the signature is different
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AddHandler watchfolder.Renamed, AddressOf logrename
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'Set this property to true to start watching
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watchfolder.EnableRaisingEvents = True
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btn_startwatch.Enabled = False
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btn_stop.Enabled = True
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'End of code for btn_start_click
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End Sub
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Private Sub logchange(ByVal source As Object, ByVal e As _
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System.IO.FileSystemEventArgs)
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If e.ChangeType = IO.WatcherChangeTypes.Changed Then
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txt_folderactivity.Text &= "File " & e.FullPath & _
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" has been modified" & vbCrLf
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End If
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If e.ChangeType = IO.WatcherChangeTypes.Created Then
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txt_folderactivity.Text &= "File " & e.FullPath & _
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" has been created" & vbCrLf
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End If
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If e.ChangeType = IO.WatcherChangeTypes.Deleted Then
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txt_folderactivity.Text &= "File " & e.FullPath & _
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" has been deleted" & vbCrLf
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End If
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End Sub
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Public Sub logrename(ByVal source As Object, ByVal e As _
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System.IO.RenamedEventArgs)
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txt_folderactivity.Text &= "File" & e.OldName & _
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" has been renamed to " & e.Name & vbCrLf
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End Sub
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Private Sub btn_stop_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_stop.Click
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' Stop watching the folder
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watchfolder.EnableRaisingEvents = False
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btn_startwatch.Enabled = True
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btn_stop.Enabled = False
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End Sub
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End Class
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I get this error: on line: 47 -
Cross-thread operation not valid: Control 'txt_folderactivity' accessed from a thread other than the thread it was created on.
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Can anyone suggest anything, or tell me what this error means?
James
1  1490  -
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false
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Made the problem go away.
James
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