public class CXml

{

    private string strXmlFile;

     private XmlDocument objXmlDoc = new XmlDocument();

     public CXml(string xmlFile)

     {

         //构造函数

         try

         {

              objXmlDoc.Load(xmlFile);

         }

         catch

         {

         }

         strXmlFile = xmlFile;

     }

     public DataView GetData(string xmlPathNode)

     {

         //查找数据返回一个DataView

         DataSet ds = new DataSet();

         StringReader read = new StringReader(objXmlDoc.SelectSingleNode(xmlPathNode).OuterXml);

         ds.ReadXml(read);

         return ds.Tables[0].DefaultView;

     }

     public void Replace(string xmlPathNode,string content)

     {

         //更新节点內容

         objXmlDoc.SelectSingleNode(xmlPathNode).InnerText = content;

     }

     public void Delete(string node)

     {

         //刪除一个节点

         string mainNode = node.Substring(0,node.LastIndexOf("/"));

         objXmlDoc.SelectSingleNode(mainNode).RemoveChild(objXmlDoc.SelectSingleNode(node));

     }

     public void InsertNode(string mainNode,string childNode,string element,string content)

     {

         //插入一节点和此节点的一子节点

         XmlNode objRootNode = objXmlDoc.SelectSingleNode(mainNode);

         XmlElement objChildNode = objXmlDoc.CreateElement(childNode);