Windows Phone 8.1 Development: How do I get the ListView dropdown to load more?

When using the ListView as a data rendering carrier in Windows Phone 8.1 development, it is often necessary to load more interactions with a drop-down (thumb swipe up). How do I do this? Here's what you'll be explaining.

The idea is this:

1. in the loaded event of the ListView, get the ScrollView object in the ListView.

How to get ScrollViewer, this article said very clearly!

Windows Phone 8.1 development: How to get the ScrollViewer object from the ListView

2. Create an event for ScrollViewer, which was also stated in the previous article.

3. do the following in the Scrollviewer_viewchanged event.

Private async void Scrollviewer_viewchanged (object sender, Scrollviewerviewchangedeventargs e)
{
ScrollViewer Scroll1 = sender as ScrollViewer;

If sliding to the bottom of the ~
if (Scroll1.verticaloffset >= scroll1.scrollableheight)
{

Load more Code ~

}

}

Drop-down loading more operations basically that's it ~

Windows Phone 8.1 Development: How do I get the ListView dropdown to load more?