void lb_ItemRealized(object sender, Microsoft.Phone.Controls.ItemRealizationEventArgs e)
{
var tweet = e.Container.DataContext as ITweetable;
if (tweet != null && lb.Loader.Source.LastOrDefault() == tweet)
{
lb.LoadOld();
lb.Loader.IsLoading = false; // Supress loading bar.
}
}
void CheckInfiniteScroll()
{
var distToBottom = scrollViewer.ExtentHeight - scrollViewer.VerticalOffset;
const double trigger = 25;
if (distToBottom > 0 && distToBottom < trigger)
{
lb.LoadOld();
lb.Loader.IsLoading = false; // Supress the progress bar.
}
}
