FileSystemWatcher.Renamed Événement
Définition
Important
Certaines informations portent sur la préversion du produit qui est susceptible d’être en grande partie modifiée avant sa publication. Microsoft exclut toute garantie, expresse ou implicite, concernant les informations fournies ici.
Se produit quand un fichier ou un répertoire du Path spécifié est renommé.
public:
event System::IO::RenamedEventHandler ^ Renamed;
public event System.IO.RenamedEventHandler? Renamed;
public event System.IO.RenamedEventHandler Renamed;
[System.IO.IODescription("FSW_Renamed")]
public event System.IO.RenamedEventHandler Renamed;
member this.Renamed : System.IO.RenamedEventHandler
[<System.IO.IODescription("FSW_Renamed")>]
member this.Renamed : System.IO.RenamedEventHandler
Public Custom Event Renamed As RenamedEventHandler
Type d'événement
- Attributs
Exemples
L’exemple suivant utilise l’événement Renamed pour afficher le chemin du fichier dans la console chaque fois que le fichier surveillé est renommé.
#include "pch.h"
using namespace System;
using namespace System::IO;
class MyClassCPP
{
public:
int static Run()
{
FileSystemWatcher^ watcher = gcnew FileSystemWatcher("C:\\path\\to\\folder");
watcher->NotifyFilter = static_cast<NotifyFilters>(NotifyFilters::Attributes
| NotifyFilters::CreationTime
| NotifyFilters::DirectoryName
| NotifyFilters::FileName
| NotifyFilters::LastAccess
| NotifyFilters::LastWrite
| NotifyFilters::Security
| NotifyFilters::Size);
watcher->Changed += gcnew FileSystemEventHandler(MyClassCPP::OnChanged);
watcher->Created += gcnew FileSystemEventHandler(MyClassCPP::OnCreated);
watcher->Deleted += gcnew FileSystemEventHandler(MyClassCPP::OnDeleted);
watcher->Renamed += gcnew RenamedEventHandler(MyClassCPP::OnRenamed);
watcher->Error += gcnew ErrorEventHandler(MyClassCPP::OnError);
watcher->Filter = "*.txt";
watcher->IncludeSubdirectories = true;
watcher->EnableRaisingEvents = true;
Console::WriteLine("Press enter to exit.");
Console::ReadLine();
return 0;
}
private:
static void OnChanged(Object^ sender, FileSystemEventArgs^ e)
{
if (e->ChangeType != WatcherChangeTypes::Changed)
{
return;
}
Console::WriteLine("Changed: {0}", e->FullPath);
}
static void OnCreated(Object^ sender, FileSystemEventArgs^ e)
{
Console::WriteLine("Created: {0}", e->FullPath);
}
static void OnDeleted(Object^ sender, FileSystemEventArgs^ e)
{
Console::WriteLine("Deleted: {0}", e->FullPath);
}
static void OnRenamed(Object^ sender, RenamedEventArgs^ e)
{
Console::WriteLine("Renamed:");
Console::WriteLine(" Old: {0}", e->OldFullPath);
Console::WriteLine(" New: {0}", e->FullPath);
}
static void OnError(Object^ sender, ErrorEventArgs^ e)
{
PrintException(e->GetException());
}
static void PrintException(Exception^ ex)
{
if (ex != nullptr)
{
Console::WriteLine("Message: {0}", ex->Message);
Console::WriteLine("Stacktrace:");
Console::WriteLine(ex->StackTrace);
Console::WriteLine();
PrintException(ex->InnerException);
}
}
};
int main()
{
MyClassCPP::Run();
}
using System;
using System.IO;
namespace MyNamespace
{
class MyClassCS
{
static void Main()
{
using var watcher = new FileSystemWatcher(@"C:\path\to\folder");
watcher.NotifyFilter = NotifyFilters.Attributes
| NotifyFilters.CreationTime
| NotifyFilters.DirectoryName
| NotifyFilters.FileName
| NotifyFilters.LastAccess
| NotifyFilters.LastWrite
| NotifyFilters.Security
| NotifyFilters.Size;
watcher.Changed += OnChanged;
watcher.Created += OnCreated;
watcher.Deleted += OnDeleted;
watcher.Renamed += OnRenamed;
watcher.Error += OnError;
watcher.Filter = "*.txt";
watcher.IncludeSubdirectories = true;
watcher.EnableRaisingEvents = true;
Console.WriteLine("Press enter to exit.");
Console.ReadLine();
}
private static void OnChanged(object sender, FileSystemEventArgs e)
{
if (e.ChangeType != WatcherChangeTypes.Changed)
{
return;
}
Console.WriteLine($"Changed: {e.FullPath}");
}
private static void OnCreated(object sender, FileSystemEventArgs e)
{
string value = $"Created: {e.FullPath}";
Console.WriteLine(value);
}
private static void OnDeleted(object sender, FileSystemEventArgs e) =>
Console.WriteLine($"Deleted: {e.FullPath}");
private static void OnRenamed(object sender, RenamedEventArgs e)
{
Console.WriteLine($"Renamed:");
Console.WriteLine($" Old: {e.OldFullPath}");
Console.WriteLine($" New: {e.FullPath}");
}
private static void OnError(object sender, ErrorEventArgs e) =>
PrintException(e.GetException());
private static void PrintException(Exception? ex)
{
if (ex != null)
{
Console.WriteLine($"Message: {ex.Message}");
Console.WriteLine("Stacktrace:");
Console.WriteLine(ex.StackTrace);
Console.WriteLine();
PrintException(ex.InnerException);
}
}
}
}
Imports System.IO
Namespace MyNamespace
Class MyClassVB
Shared Sub Main()
Using watcher = New FileSystemWatcher("C:\path\to\folder")
watcher.NotifyFilter = NotifyFilters.Attributes Or
NotifyFilters.CreationTime Or
NotifyFilters.DirectoryName Or
NotifyFilters.FileName Or
NotifyFilters.LastAccess Or
NotifyFilters.LastWrite Or
NotifyFilters.Security Or
NotifyFilters.Size
AddHandler watcher.Changed, AddressOf OnChanged
AddHandler watcher.Created, AddressOf OnCreated
AddHandler watcher.Deleted, AddressOf OnDeleted
AddHandler watcher.Renamed, AddressOf OnRenamed
AddHandler watcher.Error, AddressOf OnError
watcher.Filter = "*.txt"
watcher.IncludeSubdirectories = True
watcher.EnableRaisingEvents = True
Console.WriteLine("Press enter to exit.")
Console.ReadLine()
End Using
End Sub
Private Shared Sub OnChanged(sender As Object, e As FileSystemEventArgs)
If e.ChangeType <> WatcherChangeTypes.Changed Then
Return
End If
Console.WriteLine($"Changed: {e.FullPath}")
End Sub
Private Shared Sub OnCreated(sender As Object, e As FileSystemEventArgs)
Dim value As String = $"Created: {e.FullPath}"
Console.WriteLine(value)
End Sub
Private Shared Sub OnDeleted(sender As Object, e As FileSystemEventArgs)
Console.WriteLine($"Deleted: {e.FullPath}")
End Sub
Private Shared Sub OnRenamed(sender As Object, e As RenamedEventArgs)
Console.WriteLine($"Renamed:")
Console.WriteLine($" Old: {e.OldFullPath}")
Console.WriteLine($" New: {e.FullPath}")
End Sub
Private Shared Sub OnError(sender As Object, e As ErrorEventArgs)
PrintException(e.GetException())
End Sub
Private Shared Sub PrintException(ex As Exception)
If ex IsNot Nothing Then
Console.WriteLine($"Message: {ex.Message}")
Console.WriteLine("Stacktrace:")
Console.WriteLine(ex.StackTrace)
Console.WriteLine()
PrintException(ex.InnerException)
End If
End Sub
End Class
End Namespace
Remarques
L’événement Renamed
est un RenamedEventHandler délégué qui a la signature suivante :
public delegate void Renamed(object sender, RenamedEventArgs e);
Public Delegate Sub RenamedEventHandler(sender As Object, e As RenamedEventArgs)
L’objet RenamedEventArgs fournit des informations sur l’opération de renommage, telles que le type du renommage (la ChangeType propriété), l’ancien et le nouveau nom, ainsi que l’ancien et le nouveau chemin d’accès. Notez que la Name propriété peut être null pour les événements renommés si le n’obtient pas les FileSystemWatcher événements de nom correspondants à partir du système d’exploitation.
Le changement de nom du répertoire que vous regardez ne déclenche pas de notification. Les notifications sont déclenchées uniquement pour les entrées à l’intérieur du répertoire que vous regardez.