private async void Save()
{
string x = DateTime.Now.ToString("yyyy:MM:dd:HH:mm:ss");
UserDialogs.Instance.ShowLoading("Espere");
stream?.Seek(0, SeekOrigin.Begin);
await ServiceWebApi.UpdateUser(App.User, stream, x);
App.User = await ServiceWebApi.GetUser(App.User.IdUser.Value, x);
UserDialogs.Instance.HideLoading();
MainViewModels.GetInstance().Home = new HomeViewModel();
await App.Current.MainPage.DisplayAlert("Información", "Perfil actualizado", "Aceptar");
await App.Current.MainPage.Navigation.PopAsync();
}