// --- normal Methods private async Task DeleteMember(Member member) { var response = await DisplayAlert( "Warnung", $"Mitglied '{member.FullName}' löschen?", "Löschen", "Abbrechen"); if (!response) { return; } if ((Detail as MemberDetailPage)?.Member == member) { Detail = new MemberCreationPage(this, _quarry); } await _quarry.Delete(member); await RefreshList(); }