C# 在Windows Phone 8.1中为分组的ListView实现LoadMore分页?
是否可以在分组的ListView(CollectionViewSource)中应用分页方法。或者你知道另一种方法,请告诉我。你可以这样做: 在ListView中,使用以下代码添加“已加载”事件:C# 在Windows Phone 8.1中为分组的ListView实现LoadMore分页?,c#,.net,xaml,windows-8.1,windows-phone-8.1,C#,.net,Xaml,Windows 8.1,Windows Phone 8.1,是否可以在分组的ListView(CollectionViewSource)中应用分页方法。或者你知道另一种方法,请告诉我。你可以这样做: 在ListView中,使用以下代码添加“已加载”事件: private void LvPictures_OnLoaded(object sender, RoutedEventArgs e) { ScrollViewer viewer = GetScrollViewer(this.LvPictures); viewer.ViewChan
private void LvPictures_OnLoaded(object sender, RoutedEventArgs e)
{
ScrollViewer viewer = GetScrollViewer(this.LvPictures);
viewer.ViewChanged += LvPictures_ViewChanged;
}
public static ScrollViewer GetScrollViewer(DependencyObject depObj)
{
if (depObj is ScrollViewer) return depObj as ScrollViewer;
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
{
var child = VisualTreeHelper.GetChild(depObj, i);
var result = GetScrollViewer(child);
if (result != null) return result;
}
return null;
}
private async void LvPictures_ViewChanged(object sender, ScrollViewerViewChangedEventArgs e)
{
ScrollViewer view = (ScrollViewer)sender;
double progress = view.VerticalOffset / view.ScrollableHeight;
if (progress > 0.8 & !_incallFilesList && NextPagePicturesAvailable)
{
_incallFilesList = true;
GetNextPicturesPageAsync();
}
_incallFilesList = false;
}