C# 控制台应用程序 - 文件夹中的不活动

Question

我对 C# 编码还很陌生。我正在尝试设置一个代码，当文件夹中有 inactivity 时会提醒我。我们有一个当前和存档文件夹。在当前文件夹中处理文件后，它将移动到存档文件夹中。我有检查当前文件夹中是否有文件的代码，这是简单的部分

        DirectoryInfo id = new DirectoryInfo(@"C\");
        FileInfo[] TXTFiles = id.GetFiles("*.txt");
        if (TXTFiles.Length == 0)
        {
            Console.WriteLine("Files does not ");
            Console.WriteLine("Checking the last processed file in the Archive directory");
            Console.Read();
        }
        if (TXTFiles.Length != 0)
        {
            Console.WriteLine("Files exists ");
            Console.Read();
        }

所以在文件不存在的逻辑中我想有一个额外的步骤来获取最后一个被处理的文本文件的时间戳。这是为了检查有多久没有 activity 。我不确定如何进行。另外，我可以将消息发送到网络服务，而不是将此信息写入控制台吗

谢谢

Answer 1

FileSystemWatcher 会成为你的朋友:)

https://msdn.microsoft.com/fr-fr/library/system.io.filesystemwatcher(v=vs.110).aspx

using System;
using System.IO;
using System.Security.Permissions;

public class Watcher
{

    public static void Main()
    {
    Run();

    }

    [PermissionSet(SecurityAction.Demand, Name="FullTrust")]
    public static void Run()
    {
        string[] args = System.Environment.GetCommandLineArgs();

        // If a directory is not specified, exit program.
        if(args.Length != 2)
        {
            // Display the proper way to call the program.
            Console.WriteLine("Usage: Watcher.exe (directory)");
            return;
        }

        // Create a new FileSystemWatcher and set its properties.
        FileSystemWatcher watcher = 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 | NotifyFilters.LastWrite
           | NotifyFilters.FileName | NotifyFilters.DirectoryName;
        // Only watch text files.
        watcher.Filter = "*.txt";

        // Add event handlers.
        watcher.Changed += new FileSystemEventHandler(OnChanged);
        watcher.Created += new FileSystemEventHandler(OnChanged);
        watcher.Deleted += new FileSystemEventHandler(OnChanged);
        watcher.Renamed += new RenamedEventHandler(OnRenamed);

        // Begin watching.
        watcher.EnableRaisingEvents = true;

        // Wait for the user to quit the program.
        Console.WriteLine("Press \'q\' to quit the sample.");
        while(Console.Read()!='q');
    }

    // Define the event handlers.
    private static void OnChanged(object source, FileSystemEventArgs e)
    {
        // Specify what is done when a file is changed, created, or deleted.
       Console.WriteLine("File: " +  e.FullPath + " " + e.ChangeType);
    }

    private static void OnRenamed(object source, RenamedEventArgs e)
    {
        // Specify what is done when a file is renamed.
        Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);
    }
}

来自 MSDN 的源代码。

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