FileSystemWatcher Event problem

  • Thread starter Thread starter yogesh
  • Start date Start date
Y

yogesh

hello

I getting problem in FileSystemWatcher , I had wrriten the code for
the FileSystemWatcher , when i dropping the new file in the directory
, the WatcherEdi_Created event get fired , but some time it not get
fired. also this happens with muliple files dropping in same folder .
the count of events not equal to number of files droped.Follwing i
scode snippet. please do the needfull for me.

thank in advance.

Yogesh


Private Sub WatcherEdi_Created(ByVal sender As Object, ByVal e As
System.IO.FileSystemEventArgs) Handles WatcherEdi.Created
Dim fileObj As IO.File
Dim FileAccessed As Boolean
Dim strGuid As String

Try
While Not FileAccessed
strISACtrlNum = ""
Try
' Check for 850 file
If get850(e.FullPath) Then
Call getSenderId(e.FullPath)
Call getInterChangeControlNum(e.FullPath)
fileObj.Move(e.FullPath, renamedEdiFilePathEdi
& "Edi " & strISACtrlNum & ".edi")
FileAccessed = True
fileObj = Nothing
Count = Count + 1
Else

If get997(e.FullPath) Then
If getInvoice(e.FullPath) = True Then
'
MsgBox(getInvoicenumber(e.FullPath))

'UpdateInvoiceAck(getInvoicenumber(e.FullPath))

End If
End If
strGuid = (System.Guid.NewGuid.ToString)
fileObj.Move(e.FullPath, OtherEdifilePath &
"\" & strGuid)
FileAccessed = True
fileObj = Nothing

End If
Catch ex As System.IO.IOException
FileAccessed = True
fileObj = Nothing
Exit Try
End Try
End While

Catch ex As Exception
Dim funname = "WacherEDI"
Trace.WriteLine(ex.Message + "Reported In Function: " +
funname + " at: " + DateTime.Now.ToString)
Trace.Flush()
Finally
End Try

End Sub
 
yogesh
According to the code that you sent, you are using a module level Count
variable. Be aware that your event code can be running several instances at
once. In other words the event is going to fire every time a file is
dropped and the code will be running logically multithreaded so you keep
this in mind. I don't know what some of the methods that you are calling
are doing, but it appears that not all paths of your code update Count.

I use the FileWatcher in a mission critical application and have never seen
an instance where a file being dropped was not being recorded. I run the
FileWatcher in a service on the server that I am watching and write the list
of files to a file on that drive. As long as the server is up, the service
is running and the FileWatcher is on. I have another program that renames
and reads the file written by the service and updates database with the file
information. I do this so that the FileWatcher program will never go down
as long as the server is running.

See my article on this subject at
http://www.knowdotnet.com/articles/filewatcherservice.html

HTH
Les Smith
 
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