How to pass a parameter from one Page to another Page in Xamarin.Forms?

Question

I want to send a value when I press a button in a form to another form through the MVVM pattern.

This is the XAML file

Answer 1

Good example of passing parameters to ViewModel and getting result back: How do I pass entry parameters to Xamarin MVVM viewmodel

To navigate from ViewModel to next page (View):

await Xamarin.Forms.Application.Current.MainPage.Navigation.PushAsync(new MyView());