using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;
using System.IO;
/// <summary>
/// XmlControl 的摘要说明
/// </summary>
namespace donny
{
    public class XmlControl
    {
        protected string strXmlFile;
        protected XmlDocument objXmlDoc = new XmlDocument();
        public XmlControl(string XmlFile)
        {
            //
            // TODO: 在这里加入建构函式的程式码
            //
            try
            {
                objXmlDoc.Load(XmlFile);
            }
            catch (System.Exception ex)
            {
                throw ex;
            }
            strXmlFile = XmlFile;
        }
        public DataSet GetData(string XmlPathNode)
        {
            //查找数据。返回一个DataSet
            DataSet ds = new DataSet();
           StringReader read = new StringReader(objXmlDoc.SelectSingleNode(XmlPathNode).OuterXml);
           
            //objXmlDoc.SelectNodes(XmlPathNode)
            ds.ReadXml(read);
            return ds;
        }
        public void Replace(string XmlPathNode, string Content)
        {
            //更新节点内容。
            objXmlDoc.SelectSingleNode(XmlPathNode).InnerText = Content;
        }
        public void Delete(string Node)
        {
            //删除一个节点。
            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);
            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);
        }
        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);
        }
        public void Save( string filepath)
        {
            //保存文档。
            try
            {
                objXmlDoc.Save(filepath);
            }
            catch (System.Exception ex)
            {
                throw ex;
            }
            objXmlDoc = null;
        }
    }
    // 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();
}