读取XML绑定TreeNode

<asp:TreeView ID="treeview" OnClick="TreeViewCheckBox_Click()"  runat="server">
    </asp:TreeView>

treeview.ShowCheckBoxes = TreeNodeTypes.All;
        treeview.ShowLines = true;
        treeview.ExpandDepth = 1;
        treeview.TreeNodeCheckChanged += new TreeNodeEventHandler(treeview_TreeNodeCheckChanged);
        if (!IsPostBack)
        {
            string url = "../../Xml/LayerConfig11.xml";
            url = Server.MapPath(url);
            XmlDocument xDoc = new XmlDocument();
            xDoc.Load(url);

            XmlNode fn = xDoc.DocumentElement;
            TreeNode tn = new TreeNode();
            tn.Text = fn.Attributes["Name"].Value;
            tn.ImageUrl = fn.Attributes["Icon"].Value;
            tn.SelectAction = TreeNodeSelectAction.None;
            treeview.Nodes.Add(tn);

            for (int i = 0; i < treeview.Nodes.Count; i++)
            {
                if (treeview.Nodes[i].Checked)
                {
                    treeview.Nodes[i].Parent.Checked = true;
                }
            }
            XmlNodeList nodes = fn.ChildNodes;
            foreach (XmlNode item in nodes)
            {

                if (item.Attributes["No"].Value == "06" || item.Attributes["No"].Value == "00")
                {
                    TreeNode tn02 = new TreeNode();
                    tn02.Text = item.Attributes["Name"].Value;
                    tn02.ImageUrl = item.Attributes["Icon"].Value;
                    tn02.SelectAction = TreeNodeSelectAction.None;
                    tn.ChildNodes.Add(tn02);
                    AddNodes(tn02, item);
                }
            }
        }

void treeview_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)
    {
        TreeNode tn = e.Node;
        bool IsChecked = tn.Checked;

        CheckTreeNodeParent(tn, IsChecked);

        CheckTreeNodeChildren(tn, IsChecked);
    }

/// <summary>
    /// 选中父类节点
    /// </summary>
    /// <param name="tn"></param>
    /// <param name="Checked"></param>
    private void CheckTreeNodeParent(TreeNode tn, bool Checked)
    {
        TreeNode ptn = tn.Parent;

        if (ptn != null)
        {
            if (Checked)
            {
                ptn.Checked = Checked;
                CheckTreeNodeParent(ptn, Checked);
            }
            else
            {
                bool HasTreeNodeChecked = HasCheckedTreeNode(ptn);
                if (!HasTreeNodeChecked)
                {
                    ptn.Checked = Checked;
                    CheckTreeNodeParent(ptn, Checked);
                }
            }
        }
    }

 private bool HasCheckedTreeNode(TreeNode tn)
    {
        bool IsChecked = false;
        if (tn != null)
        {
            TreeNodeCollection tns = tn.ChildNodes;
            if (tns != null)
            {
                for (int i = 0; i < tns.Count; i++)
                {
                    if (tns[i].Checked)
                    {
                        IsChecked = true;
                        break;
                    }
                    else
                    {
                        HasCheckedTreeNode(tns[i]);
                    }
                }
            }
        }

        return IsChecked;
    }

private void CheckTreeNodeChildren(TreeNode tn, bool Checked)
    {
        TreeNodeCollection tns = tn.ChildNodes;
        if (tns != null)
        {
            for (int i = 0; i < tns.Count; i++)
            {
                tns[i].Checked = Checked;

                CheckTreeNodeChildren(tns[i], Checked);
            }
        }
    }

/// <summary>
    /// 递归绑定节点
    /// </summary>
    /// <param name="tnode">父级节点</param>
    /// <param name="xnode">源节点</param>
    private void AddNodes(TreeNode tnode, XmlNode xnode)
    {
        if (xnode.HasChildNodes)
        {
            foreach (XmlNode child in xnode.ChildNodes)
            {
                TreeNode tn03 = new TreeNode();
                tn03.Text = child.Attributes["Name"].Value;
                tn03.ImageUrl = child.Attributes["Icon"].Value;
                tn03.SelectAction = TreeNodeSelectAction.None;
                tnode.ChildNodes.Add(tn03);
                if (child.HasChildNodes)
                {
                    AddNodes(tn03, child);
                }
                else
                {
                    continue;
                }
            }
        }
    }