private async void OnOpenMaps()
        {
            if (IsBusy)
            {
                return;
            }

            IsBusy = true;

            try
            {
                if (Device.RuntimePlatform == Device.iOS)
                {
                    string endereco = RemoveCarecteres.ObterStringSemAcentosECaracteresEspeciais(Endereco);
                    endereco = endereco.Replace(" ", "+");
                    await Launcher.TryOpenAsync("http://maps.apple.com/?q=" + endereco);
                }
                else if (Device.RuntimePlatform == Device.Android)
                {
                    string endereco = RemoveCarecteres.ObterStringSemAcentosECaracteresEspeciais(Endereco);
                    endereco = endereco.Replace(" ", "+");
                    await Launcher.TryOpenAsync("geo:0,0?q=" + endereco);
                }
                else if (Device.RuntimePlatform == Device.UWP)
                {
                    await Map.OpenAsync(new Placemark()
                    {
                        PostalCode      = Estagio.Endereco.Cep,
                        Thoroughfare    = Estagio.Endereco.Logradouro,
                        Locality        = Estagio.Endereco.Localidade,
                        AdminArea       = Estagio.Endereco.Uf,
                        SubThoroughfare = Estagio.Endereco.Unidade
                    });
                }
            }
            catch (Exception ex)
            {
                await Application.Current.MainPage.DisplayAlert("Erro", ex.Message, "OK");
            }
            finally
            {
                IsBusy = false;
            }
        }
        private void OnBuscarEndereco()
        {
            if (IsBusy)
            {
                return;
            }

            IsBusy = true;

            try
            {
                Endereco.Cep    = RemoveCarecteres.ObterStringSemAcentosECaracteresEspeciais(Endereco.Cep);
                CepError        = string.Empty;
                CepErrorVisible = false;
                if (MyValidation.ValidarCep(Endereco.Cep))
                {
                    var e = Util.Location.GetCEPPosition(Endereco.Cep);

                    if (e != null)
                    {
                        Endereco = e;
                    }
                }
                else
                {
                    CepError        = "CEP inválido.";
                    CepErrorVisible = true;
                }
            }
            catch (Exception ex)
            {
                Application.Current.MainPage.DisplayAlert("Erro", ex.Message, "Ok");
            }
            finally
            {
                IsBusy = false;
            }
        }