Toggle bottomappbar on opening contentdialog control in UWP windows phone 10

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C#

XAML

WinRT

UWP

In my UWP application originally developed for Win8.1, I have a Page BottomAppBar control in all pages which holds an Appbar button and a command bar. There is a link in the command bar inside BottomAppBar to open a full sized content dialog screen as shown in the below screenshot. In Windows Phone 8.1 (first screenshot), when opening the content dialog, the bottomappbar is getting hidden automatically. But in Windows Phone 10 (second screenshot), the bottomappbar is not hidden, hiding a few settings at the bottom.

I am not sure how would I be able to control the AppBar on the contentdialog code.

Below are the screenshots for reference:
Win8.1: http://i.stack.imgur.com/1uUFy.png[^]

Win10: http://i.stack.imgur.com/Gxbka.png[^]

Any suggestions would greatly help.

Thanks in advance

What I have tried:

I tried to make the bottom app bar's visibility as Collapsed when opening the Content Dialog from a page. But I'm not able to make it visible again, because I am neither not able to access the page in ContentDialog to control the bottomappbar when closing ContentDialog nor able to handle find which event would it trigger when the ContentDialog is closed and lands on a page. So struck with this for quite a long time.