FileSystemWatcher.Renamed 事件

定义

命名空间:

System.IO

程序集:

System.IO.FileSystem.Watcher.dll

Source:

FileSystemWatcher.cs

重命名指定 Path 中的文件或目录时发生。

C#

public event System.IO.RenamedEventHandler? Renamed;

事件类型

RenamedEventHandler

示例

以下示例使用 Renamed 事件在监视文件重命名时显示控制台的文件路径。

C#

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);
            }
        }
    }
}

注解

事件 Renamed 是具有以下 RenamedEventHandler 签名的委托：

C#

public delegate void Renamed(object sender, RenamedEventArgs e);

对象 RenamedEventArgs 提供有关重命名操作的信息，例如重命名类型 (ChangeType 属性) 、新旧名称以及新旧路径。 请注意， Name 如果 未从操作系统获取匹配的旧名称事件和新名称事件， FileSystemWatcher 则 重命名事件的属性可能为 null。

重命名正在监视的目录不会引发通知。 仅针对要监视的目录中的条目引发通知。

适用于

另请参阅

• OnRenamed(RenamedEventArgs)
• SynchronizingObject
• Path
• RenamedEventArgs
• RenamedEventHandler