public NewVideoDownload()
        {
            InitializeComponent();

            extension = (VideoDownloadExtension)AppManager.Instance.Application.GetExtensionByType(typeof(VideoDownloadExtension));

            videoFormatCtrl1.Change += new EventHandler(videoFormatCtrl1_Change);
        }
        private void SupportedVideoSitesForm_Load(object sender, EventArgs e)
        {
            extension = (VideoDownloadExtension)AppManager.Instance.Application.GetExtensionByType(typeof(VideoDownloadExtension));

            for (int i = 0; i < extension.Handlers.Count; i++)
            {
                this.lstSites.Items.Add(extension.Handlers[i]);
            }

            if (this.lstSites.Items.Count > 0)
            {
                this.lstSites.SelectedIndex = 0;
            }
        }