WaitForChangedResult Struct

Definizione

public value class WaitForChangedResult

public struct WaitForChangedResult

type WaitForChangedResult = struct

Public Structure WaitForChangedResult

Ereditarietà

Object

ValueType

WaitForChangedResult

Esempio

In questo esempio viene illustrato come usare un FileSystemWatcher oggetto in modo sincrono, in modo che attenda che venga eseguita una notifica di modifica del file specifica.

Imports System.IO

Module Module1
    Sub Main()
        ' Define a path and a file name for a temporary file.
        Dim pathname As String = "C:\"
        Dim filename As String = "JunkFile.tmp"
        Dim filepathname As String = Path.Combine(pathname, filename)

        ' Create the temporary file and then close it.
        File.Create(filepathname).Close()

        Console.WriteLine("This application will terminate when you delete the {0} file", filepathname)

        ' Have a FileSystemWatcher monitor the path and file for changes.
        Dim fsw As New FileSystemWatcher(pathname, filename)
        fsw.NotifyFilter = NotifyFilters.FileName
        fsw.EnableRaisingEvents = True

        ' Suspend the calling thread until the file has been deleted.
        Dim cr As IO.WaitForChangedResult = fsw.WaitForChanged(WatcherChangeTypes.Deleted)

        ' Tell the user the file is deleted and exit.
        Console.WriteLine("The {0} files is deleted; program is exiting", cr.Name)
    End Sub
End Module

' This code produces the following output.
' 
'  This application will terminate when you delete the C:\JunkFile.tmp file
'  The JunkFile.tmp files is deleted; program is exiting

Proprietà

Si applica a

Vedi anche

• FileSystemEventArgs
• FileSystemEventHandler
• FileSystemWatcher
• InternalBufferOverflowException
• NotifyFilters
• RenamedEventArgs
• RenamedEventHandler
• WaitForChanged(WatcherChangeTypes)
• WatcherChangeTypes