How to tell parent to pop current modal and redirect to NavigationPage - xamarin

Question

I have a Xamarin application, where my MainPage is a navigationpage (contentpage). In this navigationpage I open modals.
In the modals I open in my MainPage, I want to use Navigation.PushAsync but this requires the NavigationPage context which a modal page is not.
I've read that the flow would be:
Tell parent/caller to pop current visible modal
Tell parent/caller
to navigate to the page I want, using Navigation.PushAsync
However, how do you do this? How do you tell the parent to do this and actually do the navigation?

Answer 1

I would use event handlers to get this job done:
Here is an example code:
App.cs
public class App : Application
{
public App()
{
MainPage = new NavigationPage(new PushedNavigationPage());
}
}
PushedNavigationPage Page:
public class PushedNavigationPage: ContentPage
{
public PusehdNavigationPage()
{
}
public void DoPushModalOnButtonClick()
{
var pushedModalPage = new PushedModalPage();
pushedModalPage.DoPush += HandleDoPush;
Navigation.PushModalAsync(pushedModalPage);
}
private void HandleDoPush(object sender, EventArgs e)
{
Navigation.PopModalAsync();
Navigation.PushAsync(//the page you want to push)
}
}
PushedModalPage
public class PushedModalPage : ContentPage
{
public event EventHandler DoPush;
//call this on putton click or whenever you want
private void OnDoPush()
{
if (DoPush!= null)
{
DoPush(this, EventArgs.Empty);
}
}
}
I have not awaiting the async methods but it is better to do so and this is just an example, but I think you should get the idea..