private void SwitchMineFlag(MyMovieSelectorListDto movie)
 {
     movie.IsMine = !movie.IsMine;
     if (movie.IsMine)
     {
         this.SelectedIndexList.Add(movie.Id);
     }
     else
     {
         this.SelectedIndexList.Remove(movie.Id);
     }
 }
 private void SwitchSeenFlag(MyMovieSelectorListDto movie)
 {
     movie.IsSeen = !movie.IsSeen;
     this.SaveList.Add(new MovieSeenUpdateModel {
         Id = movie.Id, Seen = movie.IsSeen
     });
     if (movie.IsSeen)
     {
         this.SelectedIndexList.Add(movie.Id);
     }
     else
     {
         this.SelectedIndexList.Remove(movie.Id);
     }
 }