问题
So in Xamarin, one of the navigational methods of pulling up a new page is the PushModalAsync call, which brings a new page without any normal navigational pieces. But not having pieces like a back button also removes the ability to navigate backwards... So is there a way to UN-pushmodalasync per se? Call up a page and then put it back down, like with a button or something along those line? I know Push Async does that, but I'd like the full page without the navigation bar at the top. A page separate from everything else that can be pulled up and pushed back down.
回答1:
to dismiss a Forms modal, use PopModalAsync(). You will have to add a button or some other control on your page that triggers this.
来源：https://stackoverflow.com/questions/34160286/xamarin-forms-reverse-pushmodalasync