[ASP.net(C#)]XML操作类(一)

 public class XmlControl
 {
  protected string strXmlFile;
  protected XmlDocument objXmlDoc = new XmlDocument();

  public XmlControl(string XmlFile)
  {
   //
   // TODO: 在這裡加入建構函式的程式碼
   //
   try
   {
    objXmlDoc.Load(XmlFile);
   }
   catch (System.Exception ex)
   {
    throw ex;
   }
   strXmlFile = XmlFile;
  }

  public DataView GetData(string XmlPathNode)
  {
   //查找數據。返回一個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)
  {
   //更新節點內容。
   objXmlDoc.SelectSingleNode(XmlPathNode).InnerText = Content;
  }

  public void Delete(string Node)
  {
   //刪除一個節點。
   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)
  {
   //插入一節點和此節點的一子節點。
   XmlNode objRootNode = objXmlDoc.SelectSingleNode(MainNode);
   XmlElement objChildNode = objXmlDoc.CreateElement(ChildNode);
   objRootNode.AppendChild(objChildNode);
   XmlElement objElement = objXmlDoc.CreateElement(Element);
   objElement.InnerText = Content;
   objChildNode.AppendChild(objElement);
  }

  public void InsertElement(string MainNode,string Element,string Attrib,string AttribContent,string Content)
  {
   //插入一個節點，帶一屬性。
   XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);
   XmlElement objElement = objXmlDoc.CreateElement(Element);
   objElement.SetAttribute(Attrib,AttribContent);
   objElement.InnerText = Content;
   objNode.AppendChild(objElement);
  }

  public void InsertElement(string MainNode,string Element,string Content)
  {
   //插入一個節點，不帶屬性。
   XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);
   XmlElement objElement = objXmlDoc.CreateElement(Element);
   objElement.InnerText = Content;
   objNode.AppendChild(objElement);
  }

  public void Save()
  {
   //保存文檔。
   try
   {
    objXmlDoc.Save(strXmlFile);
   }
   catch (System.Exception ex)
   {
    throw ex;
   }
   objXmlDoc = null;
  }
 }

=========================================================

实例应用：

   string strXmlFile = Server.MapPath("TestXml.xml");
   XmlControl xmlTool = new XmlControl(strXmlFile);

//   數據顯視
//   dgList.DataSource = xmlTool.GetData("Book/Authors[ISBN=\"0002\"]");
//   dgList.DataBind();

//   更新元素內容
//   xmlTool.Replace("Book/Authors[ISBN=\"0002\"]/Content","ppppppp");
//   xmlTool.Save();

//   添加一個新節點
//   xmlTool.InsertNode("Book","Author","ISBN","0004");
//   xmlTool.InsertElement("Book/Author[ISBN=\"0004\"]","Content","aaaaaaaaa");
//   xmlTool.InsertElement("Book/Author[ISBN=\"0004\"]","Title","Sex","man","iiiiiiii");
//   xmlTool.Save();

//   刪除一個指定節點的所有內容和屬性
//   xmlTool.Delete("Book/Author[ISBN=\"0004\"]");
//   xmlTool.Save();

//   刪除一個指定節點的子節點
//   xmlTool.Delete("Book/Authors[ISBN=\"0003\"]");
//   xmlTool.Save();

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