by Geha Fernando (1 Submission)
Category: Files/File Controls/Input/Output
Compatability: VB.NET
Difficulty: Unknown Difficulty
Originally Published: Thu 30th October 2008
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Windows Service with File System Watcher Event. When File Found This Application Create Log Automatically To The System Log.
API Declarations
.IO
.Diagnostics
VBcoders
'How To Install Windows Service
'------ C:\<WinPath>\Microsoft.NET\Framework\v2.0.50727>InstallUtil ServicePath
'Remove Windows Service
'------ C:\<WinPath>\Microsoft.NET\Framework\v2.0.50727>InstallUtil /u ServicePath
Private WithEvents Fsystem As New FileSystemWatcher()
Private Path As String = "E:\Temp Data"
Private Iscomplete As Boolean = True
Private prc As Process
Protected Overrides Sub OnStart(ByVal args() As String)
Try
With Fsystem
.Path = Path
.Filter = "*.txt"
.NotifyFilter = NotifyFilters.CreationTime Or NotifyFilters.DirectoryName Or NotifyFilters.FileName Or _
NotifyFilters.LastAccess Or NotifyFilters.LastWrite Or NotifyFilters.Security
End With
AddHandler Fsystem.Created, AddressOf Fsystem_Created
AddHandler Fsystem.Deleted, AddressOf Fsystem_Deleted
Fsystem.EnableRaisingEvents = True
Call WriteToEventLog("Folder MonitorS ervice starts sucessfully.", "FolderMonitor")
Catch ex As Exception
Call WriteToEventLog(ex.Message, "FolderMonitor", EventLogEntryType.Error)
End Try
End Sub
Protected Overrides Sub OnStop()
Fsystem.EnableRaisingEvents = False
Call WriteToEventLog("Folder MonitorS ervice stops sucessfully.", "FolderMonitor")
End Sub
Private Sub Fsystem_Created(ByVal sender As Object, ByVal e As System.IO.FileSystemEventArgs) Handles Fsystem.Created
Try
If Iscomplete = True Then
Iscomplete = False
Call WriteToEventLog("Notepad opened sucessfully.", "FolderMonitor")
prc = New Process()
With prc.StartInfo
.FileName = "notepad.exe"
.WindowStyle = ProcessWindowStyle.Normal
.CreateNoWindow = False
End With
prc.Start()
prc.Close() : prc.Dispose()
End If
Catch ex As Exception
Call WriteToEventLog(ex.Message, "FolderMonitor", EventLogEntryType.Error)
End Try
End Sub
Private Sub Fsystem_Deleted(ByVal sender As Object, ByVal e As System.IO.FileSystemEventArgs) Handles Fsystem.Deleted
If Iscomplete = False Then
Iscomplete = True
Call WriteToEventLog("File deleted sucessfully.", "FolderMonitor")
End If
End Sub
Public Sub WriteToEventLog(ByVal Entry As String, _
Optional ByVal AppName As String = "VB.NET Application", _
Optional ByVal EventType As _
EventLogEntryType = EventLogEntryType.Information, _
Optional ByVal LogName As String = "Application")
Dim objEventLog As New EventLog()
If Not EventLog.SourceExists(AppName) Then EventLog.CreateEventSource(AppName, LogName)
objEventLog.Source = AppName
objEventLog.WriteEntry(Entry, EventType)
End Sub
End Class
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