public FormPreviewYouTube(YouTubeClipartObject clipartObject)
        {
            _clipartObject = clipartObject;
            InitializeComponent();

            Shown += OnShown;
        }
        private void OnApplyUrlButtonClick(object sender, ButtonPressedEventArgs e)
        {
            try
            {
                webBrowser.WebView.LoadHtmlAndWait("<html><body></body></html>");
                layoutControlItemProgress.Visibility = LayoutVisibility.Always;
                circularProgress.IsRunning           = true;
                Application.DoEvents();

                YouTubeInfo = YouTubeClipartObject.FromUrl(buttonEditUrl.EditValue as String);
                webBrowser.WebView.LoadUrlAndWait(YouTubeInfo.EmbeddedUrl);

                circularProgress.IsRunning           = false;
                layoutControlItemProgress.Visibility = LayoutVisibility.Never;
                Application.DoEvents();

                layoutControlItemOK.Enabled = true;
            }
            catch (Exception exception)
            {
                layoutControlItemOK.Enabled = false;
                YouTubeInfo = null;
                Application.DoEvents();
                webBrowser.WebView.LoadHtmlAndWait(String.Format("<html><body><h3 style\"text-align: center;\">{0}</h3></body></html>", exception.Message));
            }
        }
 private void OnUrlEditValueChanged(object sender, EventArgs e)
 {
     layoutControlItemOK.Enabled = false;
     YouTubeInfo = null;
 }