/// <summary> /// XmlHelper 的摘要说明。 /// xml操作类 /// </summary> public class XmlHelper { protected string strXmlFile; protected XmlDocument objXmlDoc = new XmlDocument(); public XmlHelper(string XmlFile) { // // TODO: 在这里加入建构函式的程序代码 // try { objXmlDoc.Load(XmlFile); } catch (System.Exception ex) { throw ex; } strXmlFile = XmlFile; } public DataTable 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]; } /// <summary> /// 新节点内容。 /// 示例:xmlTool.Replace("Book/Authors[ISBN=\"0002\"]/Content","ppppppp"); /// </summary> /// <param name="XmlPathNode"></param> /// <param name="Content"></param> public void Replace(string XmlPathNode, string Content) { //更新节点内容。 objXmlDoc.SelectSingleNode(XmlPathNode).InnerText = Content; } /// <summary> /// 删除一个指定节点的子节点。 /// 示例: xmlTool.DeleteChild("Book/Authors[ISBN=\"0003\"]"); /// </summary> /// <param name="Node"></param> public void DeleteChild(string Node) { //删除一个节点。 string mainNode = Node.Substring(0, Node.LastIndexOf("/")); objXmlDoc.SelectSingleNode(mainNode).RemoveChild(objXmlDoc.SelectSingleNode(Node)); } /// <summary> /// * 使用示列: /// 示例: XmlHelper.Delete( "/Node", "") /// XmlHelper.Delete( "/Node", "Attribute") /// </summary> /// <param name="node">节点</param> /// <param name="attribute">属性名,非空时删除该节点属性值,否则删除节点值</param> public void Delete( string node, string attribute) { try { XmlNode xn = objXmlDoc.SelectSingleNode(node); XmlElement xe = (XmlElement)xn; if (attribute.Equals("")) xn.ParentNode.RemoveChild(xn); else xe.RemoveAttribute(attribute); } catch { } } /// <summary> /// 插入一节点和此节点的一子节点。 /// 示例:xmlTool.InsertNode("Book","Author","ISBN","0004"); /// </summary> /// <param name="MainNode">主节点</param> /// <param name="ChildNode">子节点</param> /// <param name="Element">元素</param> /// <param name="Content">内容</param> 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); objRootNode.AppendChild(objChildNode); XmlElement objElement = objXmlDoc.CreateElement(Element); objElement.InnerText = Content; objChildNode.AppendChild(objElement); } /// <summary> /// 插入一个节点,带一属性。 /// 示例: xmlTool.InsertElement("Book/Author[ISBN=\"0004\"]","Title","Sex","man","iiiiiiii"); /// </summary> /// <param name="MainNode">主节点</param> /// <param name="Element">元素</param> /// <param name="Attrib">属性</param> /// <param name="AttribContent">属性内容</param> /// <param name="Content">元素内容</param> public void InsertElement(string MainNode, string Element, string Attrib, string AttribContent, string Content) { //插入一个节点,带一属性。 XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode); XmlElement objElement = objXmlDoc.CreateElement(Element); objElement.SetAttribute(Attrib, AttribContent); objElement.InnerText = Content; objNode.AppendChild(objElement); } /// <summary> /// 插入一个节点,不带属性。 /// 示例:xmlTool.InsertElement("Book/Author[ISBN=\"0004\"]","Content","aaaaaaaaa"); /// </summary> /// <param name="MainNode">主节点</param> /// <param name="Element">元素</param> /// <param name="Content">元素内容</param> public void InsertElement(string MainNode, string Element, string Content) { //插入一个节点,不带属性。 XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode); XmlElement objElement = objXmlDoc.CreateElement(Element); objElement.InnerText = Content; objNode.AppendChild(objElement); } /// <summary> /// 对xml文件做插入,更新,删除后需做Save()操作,以保存修改 /// </summary> 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); // 数据显视 // dgList.DataSource = xmlTool.GetData("Book/Authors[ISBN=\"0002\"]"); // dgList.DataBind(); // 更新元素内容 // xmlTool.Replace("Book/Authors[ISBN=\"0002\"]/Content","ppppppp"); // xmlTool.Save(); // 添加一个新节点 // 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(); // 删除一个指定节点的所有内容和属性 // xmlTool.Delete("Book/Author[ISBN=\"0004\"]"); // xmlTool.Save(); // 删除一个指定节点的子节点 // xmlTool.Delete("Book/Authors[ISBN=\"0003\"]"); // xmlTool.Save();