private void node_ChildNodeLoading(object sender, TreeNodesLazyLoadingEventArgs e)
{
lock (sender)
{
var lst = _provider.GetChildCategory(((TreeNode)sender).Key);
if (lst != null && lst.Count > 0)
{
for (int i = 0; i < lst.Count; i++)
{
e.ChildList.Add((TreeNode)lst[i]);
}
}
}
}
private TreeNodeChildCollection buildCollection()
{
var collection = new TreeNodeChildCollection(this);
collection.CollectionChanging += collection_CollectionChanging;
collection.CollectionChanged += collection_CollectionChanged;
if (ChildNodeLoading != null)
{
var e = new TreeNodesLazyLoadingEventArgs();
ChildNodeLoading(this, e);
if (e.HasChildren)
{
collection.AddRange(e.ChildList);
}
}
return(collection);
}
