protected void Page_Load(object sender, EventArgs e)
        {
            var videoPath         = exampleFileSelector.SelectedFile;
            var fileInfo          = new FileInfo(videoPath);
            var thumbnailCacheKey = new DiskCacheKey(new DiskCacheSourceKey(fileInfo.Name, fileInfo.Length, fileInfo.LastWriteTimeUtc), "jpg");

            ThumbnailUrl = ExamplesCoreConfiguration.GetDownloadUrl(
                ThumbnailCache.GetOrAdd(
                    thumbnailCacheKey,
                    thumbnailPath => GetAndSaveThumbnail(videoPath, thumbnailPath)
                    ).FilePath,
                thumbnailCacheKey.FullValue
                );

            VideoInfo = GetVideoInfo(videoPath);
        }
 private static string GetDownloadLink(FileInfo fileInfo)
 {
     return(string.Format(
                "<a href=\"{0}\">Download</a>",
                ExamplesCoreConfiguration.GetDownloadUrl(fileInfo.FullName, fileInfo.LastWriteTimeUtc.Ticks.ToString())));
 }