private void WindowSizeChanged(object sender, WindowSizeChangedEventArgs e)
{
var pageViewModel = DataContext;
if (pageViewModel == null)
{
return;
}
FrameworkElement frameworkElement;
var pageLayout = PageLayoutProvider.DetermineVisualState(NarrowWidth);
if (_viewCache.ContainsKey(pageLayout))
{
frameworkElement = _viewCache[pageLayout];
}
else
{
frameworkElement = ViewLocator.Resolve(pageViewModel, pageLayout);
_viewCache.Add(pageLayout, frameworkElement);
}
Content = frameworkElement;
ResetAppBarContentForView(frameworkElement);
}
protected virtual string DetermineVisualState()
{
return(PageLayoutProvider.DetermineVisualState(NarrowWidth).ToString());
}