void PinToStart(object sender)
 {
     if (IsPinned)
     {
         PinService.RemoveTile(PinService.GetUserDetailsUri(UserId));
         IsPinned = false;
     }
     else
     {
         PinService.CreateUpdateStartTile(User.name, User.TasksCountText, PinService.GetUserDetailsUri(UserId), true);
         IsPinned = true;
     }
 }