How to PopAsync more than 1 page in Xamarin Forms Navigation?

Question

In my app I\'m pushing pages using a NavigationPage and at some stage I want to go back to a previous page in the stack. This is my structure:

NavigationPag

Answer 1

I came with a solution which can go back to an specific page as long as you have a reference to it:

protected async Task PopToPage(Page destination)
{
    if (destination == null) return;

    //First, we get the navigation stack as a list
    var pages = Navigation.NavigationStack.ToList();

    //Then we invert it because it's from first to last and we need in the inverse order
    pages.Reverse();

    //Then we discard the current page
    pages.RemoveAt(0);

    foreach (var page in pages)
    {
        if (page == destination) break; //We found it.

        toRemove.Add(page);
    }

    foreach (var rvPage in toRemove)
    {
        navigation.RemovePage(rvPage);
    }

    await Navigation.PopAsync();
}

Answer 2

If you have a count that you would like to pop, this works really well for me.

    for(i=1; i < size; i++)
    {
    if (Device.OS == TargetPlatform.Android)
        {
            Navigation.RemovePage(Navigation.NavigationStack[Navigation.NavigationStack.Count - 1]);
        }
        else
        {
            Navigation.RemovePage(Navigation.NavigationStack[Navigation.NavigationStack.Count - 2]);
        }
    }
    await Navigation.PopAsync();

Answer 3

This worked exceptionally well for me:

I set up a counter and threw a DisplayAlert to find out how many pages I needed to remove

var x = Navigation.NavigationStack.Count();
DisplayAlert("Page Count", x.ToString(), "OK");

And then used that to remove the number I needed to fall back.

Navigation.RemovePage(Navigation.NavigationStack[Navigation.NavigationStack.Count - 2]);
await Navigation.PopAsync();

Answer 4

If you have a count that you would like to pop, this works really well.

for (var counter = 1; counter < BackCount; counter++)
{
    Navigation.RemovePage(Navigation.NavigationStack[Navigation.NavigationStack.Count - 2]);
}
await Navigation.PopAsync();

Answer 5

I was trying to do the same thing - what I've wound up doing is a bit of a hack, but does work and keep the back button of page 2 going to page 1.

Basically,

var page3 = _navi.NavigationStack.FirstOrDefault(p => p is Page3Type);
if(page3 != null)
{
    _navi.RemovePage(page3);
}
await navi.PopAsync();

What this does is first, if present, remove page3. Now that that's gone, it pops, and you're back at page 2.