页面

<telerik:RadTreeView Margin="8" x:Name="radTreeView" SelectionChanged="radTreeView_SelectionChanged" Loaded="radTreeView_Loaded">

            <telerik:RadTreeViewItem Header="Sport Categories">

                <telerik:RadTreeViewItem Header="Football">

                    <telerik:RadTreeViewItem Header="Futsal"/>

                    <telerik:RadTreeViewItem Header="Soccer"/>

                </telerik:RadTreeViewItem>

                <telerik:RadTreeViewItem Header="Tennis">

                    <telerik:RadTreeViewItem Header="Table Tennis"/>

                </telerik:RadTreeViewItem>

                <telerik:RadTreeViewItem Header="Cycling">

                    <telerik:RadTreeViewItem Header="Road Cycling"/>

                    <telerik:RadTreeViewItem Header="Indoor Cycling"/>

                    <telerik:RadTreeViewItem Header="Mountain Bike"/>

                </telerik:RadTreeViewItem>

            </telerik:RadTreeViewItem>

        </telerik:RadTreeView>

当页面完全载入后执行loaded命令

private void radTreeView_Loaded(object sender, RoutedEventArgs e)

        {

            GetTreeViewItemByPath();

        }

定义GetTreeViewByPath方法的逻辑

private void GetTreeViewItemByPath()

{

   string path = "Sport Categories|Football|Soccer";

   radTreeView.PathSeparator = "|";

   RadTreeViewItem targetItem = radTreeView.GetItemByPath( path );

}

系统会根据定义的路径（path）展开树并找到节点（如图）