<?xml version="1.0" encoding="utf-8" ?><menus>  <menu Header="水利综合网">    <extranet  LinkName="百度网"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="度网线"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="计算机信息化"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="silverlight委员会" LinkAdd="http://www.baidu.com"/>    <extranet LinkName="中央气象局"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="联合国"  LinkAdd="http://www.baidu.com"/>  </menu>  <menu Header="各省市天气网">    <extranet  LinkName="中央气象局"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="河北"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="北京"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="添加"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="修改"  LinkAdd="http://www.baidu.com"/>    <extranet LinkName="百度网盘"  LinkAdd="http://www.baidu.com"/>  </menu>  </menus>

private void getXmlDataTask_BeforeStart(object sender, EventArgs e)        {            Task task = sender as Task;            task.MethodName = "ExtranetLink.xml";            task.ReturnType = typeof(String);        }

 private void getXmlDataTaskCallBack(Response response)        {            tabConExtranet.Items.Clear();            XDocument document = XmlParseHelper.XmlParse(response.DataString);            this.Dispatcher.BeginInvoke(() =>            {                IEnumerable<XElement> elements = document.Descendants(XName.Get("menu"));                foreach (XElement parent in elements)                {                    TabItem tabItem = new TabItem();                    tabItem.Header = parent.Attribute(XName.Get("Header")).Value;                    tabItem.Style = App.Current.Resources["tabItemStyle"] as Style;                    StackPanel sp = new StackPanel();                    tabItem.Content = sp;                    sp.Orientation = Orientation.Horizontal;                    IEnumerable<XElement> childs = parent.Descendants(XName.Get("extranet"));                    foreach (XElement child in childs)                    {                        HyperlinkButton hyper = new HyperlinkButton();                        hyper.TargetName = "_blank";                        hyper.Content = string.Concat("", child.Attribute(XName.Get("LinkName")).Value);                        hyper.NavigateUri = new Uri(child.Attribute(XName.Get("LinkAdd")).Value);                        hyper.Style = App.Current.Resources["hyperlinkStyle"] as Style;                        sp.Children.Add(hyper);                    }                    tabConExtranet.Items.Add(tabItem);                }            });        }