将XML文件添加到TreeView节点，怎么没显示节点啊？

[藏花蕴秀]

代码如下，调试时TreeView里还是没东西啊，什么情况，谢谢

public void SetPhone()
{
string fileName = "Phone.xml";
try
{
//读取XML文件
TreeNode node;
XmlReader reader = XmlReader.Create(fileName);
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element) //元素节点
{
node = new TreeNode();
switch (reader.Depth)
{
case 0: //Phone
node.Text = reader.GetAttribute("name");
twPhone.Nodes.Add(node);
break;
case 1: //Brand
node.Text = reader.GetAttribute("name");
twPhone.Nodes[0].Nodes.Add(node);
break;
case 2: //Model
node.Text = reader.GetAttribute("name");
twPhone.Nodes[0].Nodes[twPhone.Nodes[0].Nodes.Count - 1].Nodes.Add(node);
break;
default: break;
}
}
reader.Close();
twPhone.ExpandAll();
}


}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "错误提示");
}

[熙风]

递归绑定xml、

 private void XmlOperation_Load(object sender, EventArgs e)
        {
            path = AppDomain.CurrentDomain.BaseDirectory + @"NameList.xml";
            xml.Load(path);//加载xml文件
            bindTvXml();
        }

        /// <summary>
        /// 绑定TreeView
        /// </summary>
        private void bindTvXml()
        {
            for (int i = 0; i < xml.DocumentElement.ChildNodes.Count; i++)
            {
                XmlNode Xnode = xml.DocumentElement.ChildNodes[i];
                TreeNode node = new TreeNode();
                node.Text = Xnode.Attributes["name"].Value;
                node.Tag = Xnode;
                bindChildNode(node, Xnode);//绑定子节点
                TvXml.Nodes.Add(node);
                TvXml.HideSelection = false;
            }
        }
        
        /// <summary>
        /// 递归绑定子节点
        /// </summary>
        /// <param name="node"></param>
        /// <param name="xml"></param>
        private void bindChildNode(TreeNode node, XmlNode xml)
        {
            for (int i = 0; i < xml.ChildNodes.Count; i++)
            {
                TreeNode Childnode = new TreeNode();
                XmlNode ChildXml = xml.ChildNodes[i];
                Childnode.Text = ChildXml.Value;
                Childnode.Name = "1";
                Childnode.Tag = xml.ChildNodes[i];
                if (ChildXml.HasChildNodes)
                {
                    if (ChildXml.ChildNodes[0].NodeType == XmlNodeType.Text)
                        Childnode.Text = ChildXml.ChildNodes[0].InnerText;
                    else
                        bindChildNode(Childnode, ChildXml);
                }
                node.Nodes.Add(Childnode);
            }
           
        }