using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;

namespace CY_DocumentSynchroWCFService
{
    public class XmlFiles : XmlDocument
    {
        #region 字段与属性
        private string _xmlFileName;
        public string XmlFileName
        {
            set { _xmlFileName = value; }
            get { return _xmlFileName; }
        }
        #endregion

        public XmlFiles(string xmlFile)
        {
            XmlFileName = xmlFile;

            this.Load(xmlFile);
        }
        /// <summary>
        /// 给定一个节点的xPath表达式并返回一个节点
        /// </summary>
        /// <param name="node"></param>
        /// <returns></returns>
        public XmlNode FindNode(string xPath)
        {
            XmlNode xmlNode = this.SelectSingleNode(xPath);
            return xmlNode;
        }
        /// <summary>
        /// 给定一个节点的xPath表达式返回其值
        /// </summary>
        /// <param name="xPath"></param>
        /// <returns></returns>
        public string GetNodeValue(string xPath)
        {
            XmlNode xmlNode = this.SelectSingleNode(xPath);//5~1-a-s-p-x
            return xmlNode.InnerText;
        }

        /// <summary>
        /// 修改节点值
        /// </summary>
        /// <param name="xPath"></param>
        /// <param name="xValue"></param>
        public void UpdateNodeValue(string xPath,string xValue)
        {
            XmlNode xmlNode = this.SelectSingleNode(xPath);
            xmlNode.InnerText = xValue;
            this.Save(XmlFileName);
        }
        /// <summary>
        /// 给定一个节点的表达式返回此节点下的孩子节点列表
        /// </summary>
        /// <param name="xPath"></param>
        /// <returns></returns>
        public XmlNodeList GetNodeList(string xPath)
        {
            XmlNodeList nodeList = this.SelectSingleNode(xPath).ChildNodes;
            return nodeList;

        }

    }
}