private void FilterChildNodes(TreeViewItem node)
{
if (node.HasItems)
{
var visibleNodeCount = node.Items.Cast <TreeViewItem>()
.Select(i =>
{
FilterChildNodes(i);
return(i);
})
.Where(i => i.Visibility == System.Windows.Visibility.Visible)
.ToArray();
if (visibleNodeCount.Count() == 0)
{
node.Visibility = System.Windows.Visibility.Collapsed;
}
else
{
node.Visibility = System.Windows.Visibility.Visible;
}
}
else
{
var header = node.Header as TreeViewFieldHeader;
if (header != null)
{
node.Visibility = header.DisplayText.ToLower().Contains(FilterCriteria.ToLower()) ? Visibility.Visible : Visibility.Collapsed;
}
}
}
public async Task OnGetAsync()
{
if (FilterCriteria == null || FilterCriteria == "")
{
SortedEvents = await eventCatalogue.GetAllItems();
}
else
{
foreach (Event evt in await eventCatalogue.GetAllItems())
{
bool add = false;
if (evt.Name.ToLower().Contains(FilterCriteria.ToLower()))
{
add = true;
}
else if (evt.Theme.ToLower().Contains(FilterCriteria.ToLower()))
{
add = true;
}
if (evt.RoomNr != RoomNr)
{
add = false;
}
if (add)
{
SortedEvents.Add(evt);
}
}
}
SortedEvents.Sort(Comparer <Event> .Create((x, y) => x.Name.CompareTo(y.Name)));
}