FileSystemWatcher 不监视 Vista（64 位）中的本地用户文件夹或临时 Internet 文件文件夹

Question

我编写了一个测试程序来监视我的图片文件夹，该文件夹指向同一用户的 c:\users[用户名]\Pictures 和临时 Internet 文件文件夹。如果我将文件夹更改为其他位置（例如 d:\persona_pics），则该程序可以正常工作。 知道为什么当我设置要监视的提到的文件夹时没有引发事件吗？

这是代码。

class Program
    {
        static void Main(string[] args)
        {
            //FileSystemWatcher myJpegFileWatcher = new FileSystemWatcher(@"C:\Users\[username]\AppData\Local\Microsoft\Windows\Temporary Internet Files\low\content.ie5\"); 
            FileSystemWatcher myJpegFileWatcher = new FileSystemWatcher(@"C:\Users\[username]\Pictures\ "); 

            myJpegFileWatcher.Filter = "*.jpg";
            myJpegFileWatcher.Created += new FileSystemEventHandler(myJpegFileWatcher_Created);
            myJpegFileWatcher.Changed += new FileSystemEventHandler(myJpegFileWatcher_Changed);
            myJpegFileWatcher.IncludeSubdirectories = true;
            myJpegFileWatcher.NotifyFilter = NotifyFilters.CreationTime;

            myJpegFileWatcher.EnableRaisingEvents = true;

            Console.Read();

        }

        static void myJpegFileWatcher_Changed(object sender, FileSystemEventArgs e)
        {
            FileInfo duplicateFile = new FileInfo(@e.FullPath);
            bool flag = true;

            while (flag)
            {
                try
                {
                    if (duplicateFile.Length > 20000)
                    {
                        duplicateFile.CopyTo(@"d:\pics\spy\ " + e.Name);
                        flag = false;
                        StreamWriter fs = new StreamWriter(@"d:\pics\log.txt", true);
                        fs.WriteLine("file is being copied:{0}, Size={1}", e.FullPath, duplicateFile.Length);
                        fs.Close();
                    }
                    else
                    {
                        StreamWriter fs = new StreamWriter(@"d:\pics\log.txt", true);
                        fs.WriteLine("file is not being copied:{0}, Size={1}", e.FullPath, duplicateFile.Length);
                        fs.Close();
                    }
                }
                catch (Exception ex)
                {
                    //   
                }
            }

        }

        static void myJpegFileWatcher_Created(object sender, FileSystemEventArgs e)
        {
            FileInfo duplicateFile = new FileInfo(@e.FullPath);
            bool flag = true;

            while (flag)
            {
                try
                {
                    if (duplicateFile.Length > 20000)
                    {
                        duplicateFile.CopyTo(@"d:\pics\spy\ " + e.Name);
                        flag = false;
                        StreamWriter fs = new StreamWriter(@"d:\pics\log.txt", true);
                        fs.WriteLine("file is being copied:{0}, Size={1}", e.FullPath, duplicateFile.Length);
                        fs.Close();
                    }
                }
                catch (Exception ex)
                {
                    //   
                }
            }



        }
    }

工作代码..

类程序 { 静态无效主（字符串[]参数） {

        FileSystemWatcher myJpegFileWatcher = new FileSystemWatcher(@"C:\Users\[user]\Pictures\"); 

        myJpegFileWatcher.Filter = "*.jpg";

        myJpegFileWatcher.Changed += new FileSystemEventHandler(myJpegFileWatcher_Changed);

        myJpegFileWatcher.IncludeSubdirectories = true;

        myJpegFileWatcher.EnableRaisingEvents = true;

        Console.Read();

    }

    static void myJpegFileWatcher_Changed(object sender, FileSystemEventArgs e)
    {
        FileInfo duplicateFile = new FileInfo(@e.FullPath);
        bool flag = true;

        while (flag)
        {
            try
            {
                if (duplicateFile.Exists)
                {

                    if (duplicateFile.Length > 20000)
                    {
                        try
                        {
                            duplicateFile.CopyTo(@"d:\pics\spy\" + e.Name,true);
                        }
                        catch (Exception ex)
                        {
                            StreamWriter fs = new StreamWriter(@"d:\pics\log.txt", true);
                            fs.WriteLine("Error Inside copying:{0}", ex.Message);
                            fs.Close(); 
                        }
                        finally
                        {
                            flag = false;
                            StreamWriter fs = new StreamWriter(@"d:\pics\log.txt", true);
                            fs.WriteLine("file is being copied:{0}, Size={1}", e.FullPath, duplicateFile.Length);
                            fs.Close();
                        }
                    }
                    else
                    {
                        StreamWriter fs = new StreamWriter(@"d:\pics\log.txt", true);
                        fs.WriteLine("file is not being copied:{0}, Size={1}", e.FullPath, duplicateFile.Length);
                        fs.Close();
                    }
                }
            }
            catch (Exception ex)
            {
                StreamWriter fs = new StreamWriter(@"d:\pics\log.txt", true);
                fs.WriteLine("Error:{0}", ex.Message);
                fs.Close(); 
            }
        }

    }


}

Answer 1

尝试运行 FileMon（可通过 MSDN 获得的 SysInternals 工具）。它将向您显示您的代码在文件系统上实际执行的操作。然后，当您将代码指向“我的图片”等时，您也许能够找出为什么或到底有什么不同的行为。