C# xml文件读取节点写入数据

<enums>

  <catagory id="SalesOrderType">

    <value description="订单">0</value>

    <value description="退货单">1</value>

  </catagory>

  <catagory id="SalesOrderStatus">

    <value description="已拆分">-30</value>

    <value description="已合并">-20</value>

    <value description="已撤销">-10</value>

    <value description="未确认">0</value>

    <value description="已确认">10</value>

    <value description="已审核">20</value>

    <value description="已打印">30</value>

    <value description="已取货">40</value>

    <value description="已验货">50</value>

    <value description="已包装">60</value>

    <value description="已发货">70</value>

    <value description="已核销">80</value>

  </catagory>

 </enums>     

XmlDocument xmldoc = new XmlDocument();

                //xmldoc.Load(Directory.GetCurrentDirectory() + "\\enums.xml"); //Debug调试 

                xmldoc.Load(Path.Combine(Application.StartupPath,"enums.xml"));           

                XmlNodeList topM = xmldoc.DocumentElement.ChildNodes;   //得到顶层节点列表

                foreach (XmlElement element in topM)

                {

                    if (element.Name.ToLower() == "catagory")

                    {

                        string catagory = element.Attributes["id"].Value;

                        XmlNodeList nodelist = element.ChildNodes;  //得到该节点的子节点

                        if (nodelist.Count > 0)

                        {

                            foreach (XmlElement el in nodelist) //读元素值

                            {                                                              

                                int keyint =int.Parse(el.InnerText);

                                string value= el.Attributes["description"].Value;

                                tenum=new Tenum(catagory,keyint,value);

                                //插入数据

                            }

                        }

                    }

                }