public static void ExpandAndSelectXamTree(this XamDataTree tree, Stack <FreeHierarchyTypeTreeItem> chain, bool isExpandLast
, bool isSelect = true)
{
tree.SelectionSettings.SelectedNodes.Clear();
Action <XamDataTreeNodesCollection> expandAndSelect = null;
expandAndSelect = delegate(XamDataTreeNodesCollection list)
{
var item = chain.Pop();
var find = list.FirstOrDefault(n => (n.Data as FreeHierarchyTypeTreeItem).FreeHierTree_ID == item.FreeHierTree_ID);
if (find == null)
{
return;
}
if (chain.Count == 0)
{
if (isExpandLast)
{
find.IsExpanded = true;
}
if (isSelect)
{
find.IsSelected = true;
}
tree.SelectionSettings.SelectedNodes.Add(find);
tree.ScrollNodeIntoView(find);
//tree.BringIntoView();
}
else
{
find.IsExpanded = true;
expandAndSelect(find.Nodes);
}
};
expandAndSelect(tree.Nodes);
}
/// <summary>
/// Разворачиваем объект в дереве с подгрузкой узлов
/// </summary>
/// <param name="tree"></param>
/// <param name="chain"></param>
/// <param name="isExpandLast"></param>
/// <param name="isSelect"></param>
/// <param name="afterFound">Действие после нахождения нужного элемента</param>
public static void ExpandAndSelectXamTreeAsync(this XamDataTree tree, ConcurrentStack <object> chain, bool isExpandLast
, bool isSelect = true, Action <XamDataTreeNode> afterFound = null)
{
tree.SelectionSettings.SelectedNodes.Clear();
Action <XamDataTreeNodesCollection> expandAndSelect = null;
//var isFirst = true;
//CancellationTokenSource tokenSource = null;
expandAndSelect = delegate(XamDataTreeNodesCollection list)
{
object item;
if (!chain.TryPop(out item))
{
//if (tokenSource != null) tokenSource.Cancel();
//WaitPanel.Hide<object>(tree, null, null);
return;
}
var find = list.FirstOrDefault(n => n.Data.Equals(item));
if (find == null)
{
//if (tokenSource != null) tokenSource.Cancel();
//WaitPanel.Hide<object>(tree, null, null);
return;
}
if (chain.Count == 0)
{
try
{
//if (isSelect)
{
tree.SelectionSettings.SelectedNodes.Add(find);
find.IsSelected = true;
}
if (isExpandLast)
{
find.IsExpanded = true;
}
tree.ScrollNodeIntoView(find);
FindBar.MoveSelectedNodeIntoCenter(tree);
}
finally
{
if (afterFound != null)
{
afterFound(find);
}
//if (tokenSource != null) tokenSource.Cancel();
//WaitPanel.Hide<object>(tree, null, null);
}
//}), DispatcherPriority.Send);
//tree.BringIntoView();
}
else
{
find.IsExpanded = true;
expandAndSelect(find.Nodes);
//tree.Dispatcher.BeginInvoke((Action)(() =>
//{
// expandAndSelect(find.Nodes);
//}), DispatcherPriority.Send);
}
};
expandAndSelect(tree.Nodes);
}