在大量视频文件上使用WindowsAPICodePack会占用所有内存

Question

我写了这个从视频文件中获取exif数据的类，代码运行正常，但如果我循环浏览大量的视频文件，我的内存不足。

它似乎没有释放对shell文件的引用，我试图将它设置为null而没有运气

如何释放内存？感谢

class Program
{
    static void Main(string[] args)
    {

        List<vFile> VideoFileList = new List<vFile>();
        foreach (string filepath in Directory.GetFiles(@"D:\VIDEO", "*.*", SearchOption.AllDirectories))
            VideoFileList.Add(new vFile(filepath));
        Console.WriteLine("Ended");
        Console.ReadKey();//Prevent Close
    }
}
class vFile
{
    //File
    public string FileName { get; set; }
    public string FileType { get; set; }
    public string FilePath { get; set; }
    public double FileSize { get; set; }
    public DateTime MediaCreated { get; set; }

    //Shell
    public string[] Artist { get; set; }
    public string[] Keywords { get; set; }
    public ulong Duration { get; set; }
    public int FrameHeight { get; set; }
    public int FrameWidth { get; set; }
    public int Rating { get; set; }
    public string Publisher { get; set; }

    public vFile(string filepath)
    {
        //File
        FileName = Path.GetFileNameWithoutExtension(filepath);
        FileType = Path.GetExtension(filepath).Replace(".", "");
        FilePath = Path.GetFullPath(filepath);
        FileSize = new System.IO.FileInfo(filepath).Length;
        MediaCreated = File.GetCreationTime(filepath);

        //Shell
        using (ShellFile shellFile = ShellFile.FromFilePath(filepath))
        {
            if (shellFile.Properties.System.Music.Artist.Value != null)
                Artist = shellFile.Properties.System.Music.Artist.Value;
            if (shellFile.Properties.System.Keywords.Value != null)
                Keywords = shellFile.Properties.System.Keywords.Value;
            if (shellFile.Properties.System.Media.Duration.Value != null)
                Duration = shellFile.Properties.System.Media.Duration.Value.Value;
            if (shellFile.Properties.System.Video.FrameHeight.Value != null)
                FrameHeight = Int32.Parse(shellFile.Properties.System.Video.FrameHeight.Value.Value.ToString());
            if (shellFile.Properties.System.Video.FrameWidth.Value != null)
                FrameWidth = Int32.Parse(shellFile.Properties.System.Video.FrameWidth.Value.Value.ToString());
            if (shellFile.Properties.System.Rating.Value != null)
                Rating = Int32.Parse(shellFile.Properties.System.Rating.Value.Value.ToString());
            if (shellFile.Properties.System.Media.Publisher.Value != null)
                Publisher = shellFile.Properties.System.Media.Publisher.Value;
        }
    }
}