private async void RegisterAction() { RollNo = RollNo.Trim(); PhoneNo = PhoneNo.Trim(); if (string.IsNullOrWhiteSpace(Password)) { _dialog.ShowMessage("Error", "Invalid Password"); } else if (Password.Length < 8) { _dialog.ShowMessage("Error", "Password must be at least 8digit"); } else if (Password != ConfirmPassword) { _dialog.ShowMessage("Error", "Password does not match"); } else { var res = await _memberHandler.Register(RollNo, PhoneNo, Password); if (res != null) { _dialog.ShowToastMessage(res.Message); _nav.GoBack(); } } }