این هم یک مثال دیگه برای کلاس فایل واچر که بررسی می کنه ایا فایلی ایجا د شده
یا تغییر پیدا کرده یا نه البته در یک دایرکتوری
Imports System.Diagnostics
Imports System.IO
Public Class Watcher
Public Shared Sub Main()
Run()
End Sub
'<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
Private Shared Sub Run()
Dim args() As String = System.Environment.GetCommandLineArgs()
' If a directory is not specified, exit the program.
If args.Length <> 2 Then
' Display the proper way to call the program.
Console.WriteLine("Usage: Watcher.exe (directory)")
Return
End If
' Create a new FileSystemWatcher and set its properties.
Dim watcher As New FileSystemWatcher()
watcher.Path = args(1)
' Watch for changes in LastAccess and LastWrite times, and
' the renaming of files or directories.
watcher.NotifyFilter = (NotifyFilters.LastAccess Or NotifyFilters.LastWrite Or NotifyFilters.FileName Or NotifyFilters.DirectoryName)
' Only watch text files.
watcher.Filter = "*.txt"
' Add event handlers.
AddHandler watcher.Changed, AddressOf OnChanged
AddHandler watcher.Created, AddressOf OnChanged
AddHandler watcher.Deleted, AddressOf OnChanged
AddHandler watcher.Renamed, AddressOf OnRenamed
' Begin watching.
watcher.EnableRaisingEvents = True
' Wait for the user to quit the program.
Console.WriteLine("Press 'q' to quit the sample.")
While Chr(Console.Read()) <> "q"c
End While
End Sub
' Define the event handlers.
Private Shared Sub OnChanged(ByVal source As Object, ByVal e As FileSystemEventArgs)
' Specify what is done when a file is changed, created, or deleted.
Console.WriteLine("File: " & e.FullPath & " " & e.ChangeType)
End Sub
Private Shared Sub OnRenamed(ByVal source As Object, ByVal e As RenamedEventArgs)
' Specify what is done when a file is renamed.
Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath)
End Sub
End Class
طبق گفته ام اس دی ان بیشتر بدرد مانیتورینگ فایل ها و فولدر ها توی شبکه
می خوره فکر کنم همینطور هم بنظر بیاد
مختصری درباره BackgroundWorker
پاسخ با نقل قول
نوشته شده توسط Sub Zero
