WP8.1 page Navigation Cache issues

Recently began to learn wp8.1 development, in the navigation of the page to learn a little bit of a problem, that is, when using the Frame.navigate () method to jump the page, each time will be re-instantiation of a page. In the new page, the Frame.goback () or GoForward () method is also reborn as a page. cannot be cached.

After testing, it is found that the page's Navigationcachemode property needs to be set, its Navigationcachemode set to Enabled (need to set the cache value of the frame) or required, Allows the page to be cached.

WP8.1 page Navigation Cache issues