public static void LoadComments(FBEntity Item, ListBox lstComments, Button btnCommentsMore, bool nextpage)
{
string lastid = null;
var offset = 0;
if (nextpage)
{
var current = lstComments.ItemsSource as VirtualizedCollection<Comment>;
if (current != null)
{
lastid = current.Last().Id;
offset = current.Count;
}
}
LoadingManager.Start();
Item.GetComments(list =>
{
ThreadHelper.RunOnUI(() =>
{
var loadmoreenabled = nextpage ? list.Any() : list.Count >= FBDataAccess.LIST_LIMIT_SIZE;
if (lastid.HasValue())
{
var current = lstComments.ItemsSource as VirtualizedCollection<Comment>;
if (current != null)
{
list = new VirtualizedCollection<Comment>(current.Concat(list).Distinct(a => a.Id));
}
}
lstComments.ItemsSource = list;
btnCommentsMore.Visibility = loadmoreenabled.ToVisibility();
btnCommentsMore.IsEnabled = true;
});
LoadingManager.Stop();
}, lastid, offset);
}
