请问，如何是判断XML文件有多少级（层）？

Question

如下文件：此XML文件加上根目录高级应该有5级，请问应该如何用代码判断出来？
<?xml version="1.0" encoding="utf-8" ?>
<NewDataSet>
<UserTable1 Text="1">
               <UserTable2 Text="1">
                  <UserTable3 Text="1">
                  </UserTable3>
               </UserTable2>
</UserTable1>
<UserTable1 Text="1">
               <UserTable2 Text="1">
                  <UserTable3 Text="1">
                    <UserTable4 Text="1">
                    </UserTable4>
                  </UserTable3>
               </UserTable2>
</UserTable1>
</NewDataSet>

Answer 1

 private void Form1_Load(object sender, EventArgs e)
        {
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.Load(@"test.xml");            int result = 0;            IEnumerator ie = xmlDocument.SelectSingleNode("/NewDataSet").ChildNodes.GetEnumerator();            while (ie.MoveNext())
            {
                XmlNode node = ie.Current as XmlNode;
                result = SearchNodeCount(node);                MessageBox.Show(node.Name + "的节点深度为:" + result);
            }
        }        public int SearchNodeCount(XmlNode node)
        {
            int count = 0;
            count++;
            if (node != null && node.ChildNodes.Count > 0)
            {
                foreach (XmlNode childNode in node.ChildNodes)
                {
                    return count + SearchNodeCount(childNode);
                }
            }
            return count;
        }

Answer 2

int counter = 0;
XmlReader reader = XmlReader.Create(Server.MapPath("~/test.xml"));
while (reader.Read())
{
if (reader.Depth > counter)
counter = reader.Depth;
}
reader.Close();
Response.Write(counter);//输出5
给分

Answer 3

Server.MapPath("~/test.xml")可以换成诸如@"c:\test.xml"之类的路径。