private async void checkUserAccount()
        {
            try
            {
                _tbl_UserMaster_Queries = new tbl_UserMaster_Queries();

                var result = await _tbl_UserMaster_Queries.GetAllItems();

                if (result.Count > 0)
                {
                    await _navigationService.NavigateAsync("/" + nameof(NavigationPage) + "/" + nameof(TabPage));
                }
            }
            catch (Exception ex)
            {
            }
        }
 public ProfileViewModel(INavigationService navigationService, IPageDialogService dialogService) : base(navigationService, dialogService)
 {
     _navigationService      = navigationService;
     _tbl_UserMaster_Queries = new tbl_UserMaster_Queries();
 }