protected override void OnClear()
{
foreach (object obj in this)
{
DataTreeListViewItem dataTreeListViewItem = (DataTreeListViewItem)obj;
dataTreeListViewItem.RemoveFromListView();
dataTreeListViewItem.ClearChildrenDataSources();
}
}
private void Collapse()
{
if (!this.IsLeaf && !this.IsExpanded && this.ListView != null)
{
this.ListView.InternalOnCollapseItem(this);
foreach (object obj in this.ChildrenItems)
{
DataTreeListViewItem dataTreeListViewItem = (DataTreeListViewItem)obj;
dataTreeListViewItem.RemoveFromListView();
}
}
}
internal void RemoveFromListView()
{
this.isInListView = false;
if (this.IsExpanded)
{
foreach (object obj in this.ChildrenItems)
{
DataTreeListViewItem dataTreeListViewItem = (DataTreeListViewItem)obj;
dataTreeListViewItem.RemoveFromListView();
}
}
if (base.ListView != null)
{
base.ListView.Items.Remove(this);
}
}