private void setPictureBoxVideoControls() { m_VideoGalleryEnumerator = m_VideoGallery.GetEnumerator(); List <PictureBox> .Enumerator pictureBoxVideoEnumerator = m_PictureBoxVideosList.GetEnumerator(); foreach (VideoGallery.VideoGalleryItem video in m_VideoGallery) { pictureBoxVideoEnumerator.MoveNext(); pictureBoxVideoEnumerator.Current.Invoke(new Action(() => pictureBoxVideoEnumerator.Current.LoadAsync((video as VideoGallery.VideoGalleryItem).PictureURL))); pictureBoxVideoEnumerator.Current.Invoke(new Action(() => pictureBoxVideoEnumerator.Current.Enabled = true)); } }