Filesystem watcher and large files

Question

var fsw = new FileSystemWatcher(sPath, \"*.PPF\");
fsw.NotifyFilter = NotifyFilters.FileName;
fsw.IncludeSubdirectories = true;
fsw.Created += FswCreated;
fsw.Enable         


        

Answer 1

Use the DelayedFileSystemWatcher.cs Class http://blogs.msdn.com/b/ahamza/archive/2006/02/06/526222.aspx

and then this code. Check the PrintFileSystemEventHandler eventhandler. It tries to read the file in file stream and if any ioerror is giventhe it assumes the file is still reading so it waits for a interval(2 seconds in this example) and then tries again. Check the CONVERSION: label

static void Main(string[] args)
    {
        DelayedFileSystemWatcher dfw = new DelayedFileSystemWatcher(@"C:\\Test", "*.*");
        dfw.Changed += new FileSystemEventHandler(Program.FileSystemEventHandlerMethod);
        dfw.Created += new FileSystemEventHandler(Program.FileSystemEventHandlerMethod);
        dfw.Deleted += new FileSystemEventHandler(Program.FileSystemEventHandlerMethod);
        dfw.Error += new ErrorEventHandler(Program.ErrorEventHandlerMethod);
        dfw.Renamed += new RenamedEventHandler(Program.RenamedEventHandlerMethod);

        dfw.IncludeSubdirectories = true;
        dfw.ConsolidationInterval = 1000;
        dfw.EnableRaisingEvents = true;
        Console.WriteLine("Press \'q\' to quit the sample.");
        while (Console.Read() != 'q') ;
        //System.Threading.Thread.Sleep(60000);
        dfw.Dispose();
    }
    private static void FileSystemEventHandlerMethod(object sender, FileSystemEventArgs e)
    {
        PrintFileSystemEventHandler(e);
        System.Console.WriteLine();
    }

    private static void ErrorEventHandlerMethod(object sender, ErrorEventArgs e)
    {
        System.Console.WriteLine(e.GetException().Message);
        System.Console.WriteLine();
    }

    private static void RenamedEventHandlerMethod(object sender, RenamedEventArgs e)
    {
        PrintRenamedEventHandler(e);
        System.Console.WriteLine();
    }

    private static void PrintFileSystemEventHandler(FileSystemEventArgs e)
    {

    CONVERSION:
        try
        {

            if (e.ChangeType != WatcherChangeTypes.Deleted)
            {
                if (!isFolder(e.FullPath) && isFile(e.FullPath))
                {
                    FileStream fs = new FileStream(e.FullPath, FileMode.Open, FileAccess.Read, FileShare.None);
                    fs.Close();
                }

            }
            System.Console.WriteLine(e.Name + " " + e.FullPath + " " + e.ChangeType);

        }
        catch (System.IO.IOException)
        {
            Console.WriteLine("There was an IOException error or File is still copying. Retrying in 2 seconds...");
            System.Threading.Thread.Sleep(2000);
            goto CONVERSION;
        }



        //System.Console.WriteLine(e.Name);
        //System.Console.WriteLine(e.FullPath);
        //System.Console.WriteLine(e.ChangeType);
    }

    private static bool isFolder(string strPath)
    {

        bool isFolderExist = false;
        try
        {
            isFolderExist = Directory.Exists(strPath);
        }
        catch
        {
            isFolderExist = false;
        }
        return isFolderExist;
    }

    private static bool isFile(string strPath)
    {

        bool isFileExist = false;
        try
        {
            isFileExist = File.Exists(strPath);
        }
        catch
        {
            isFileExist = false;
        }
        return isFileExist;
    }


    private static void PrintRenamedEventHandler(RenamedEventArgs e)
    {
        PrintFileSystemEventHandler(e);
        System.Console.WriteLine(e.OldName);
        System.Console.WriteLine(e.OldFullPath);
    }

I dont have the link to the project. but this wil help.