async Task Save()
        {
            if (String.IsNullOrWhiteSpace(Contact.FirstName) &&
                String.IsNullOrWhiteSpace(Contact.LastName))
            {
                await _pageService.DisplayAlertAsync("Error", "Please enter the name", "Ok");

                return;
            }
            await _pageService.DisplayAlertAsync("Entro", "Si sale", "Ok");

            if (Contact.Id == 0)
            {
                await _pageService.DisplayAlertAsync("Entro", Contact.FirstName + " " + Contact.LastName, "Ok");

                await _contactStore.AddContactAsync(Contact);

                ContactAdded?.Invoke(this, Contact);
            }
            else
            {
                await _contactStore.UpdateContactAsync(Contact);

                ContactUpdated?.Invoke(this, Contact);
            }

            await _pageService.PopAsync();
        }