xml读取 避开并发（xml的一些操作）

 

很多地方读取文件可能会出现并发现象 处理：

使用FileMode.Open, FileAccess.Read, FileShare.ReadWrite 避开并发

 public static List<ConfigXml> GetXmlByTypeName(XmlConfigType type)
        {
            string path = string.Empty;
            try
            {
                path = HttpRuntime.BinDirectory + @"/xml/config.xml";
            }
            catch (Exception e)
            {
                path = AppDomain.CurrentDomain.BaseDirectory + @"/xml/config.xml";
            }
            FileStream file = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            XmlDocument doc = new XmlDocument();
            doc.Load(file);

            XmlElement root = doc.DocumentElement;
            XmlNodeList dataNode = doc.SelectSingleNode(String.Format("root/type[@name='{0}']", type.ToString())).ChildNodes;
             List<ConfigXml> list = new List<ConfigXml>();
            foreach (XmlElement item in dataNode)
            {
                ConfigXml configXml = new ConfigXml();
                configXml.Name = item.GetAttribute("name");
                configXml.OnOff = item.InnerXml.Trim();
                configXml.DateType = item.GetAttribute("dateType");
                configXml.UrlValue =item.GetAttribute("Path");
                configXml.IsBeingUsed = bool.Parse(item.GetAttribute("name"));
              
                list.Add(configXml);
            }
            file.Close();
        
            return list;
           
        }

 xml文件的一些操作

 /// <summary>
        /// 查询监视文件信息
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public static List<ConfigXml> GetXmlByTypeName()
        {
            string path = ConfigurationManager.ConnectionStrings["pathXml"].ConnectionString;

            FileStream file = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            XmlDocument doc = new XmlDocument();
            file.Seek(0, SeekOrigin.Begin);
            doc.Load(file);

            //Monitored节点下所有属性
            XmlNodeList xnl = doc.GetElementsByTagName("Monitored");
            List<ConfigXml> list = new List<ConfigXml>();
            for (int i = 0; i < xnl.Count; i++)
            {
                //循环Monitored节点中每一子节点 得到具体信息
                for (int j = 0; j < xnl[i].ChildNodes.Count; j++)
                {
                    ConfigXml config = new ConfigXml();
                    XmlNode nodeCity = xnl[i].ChildNodes[j];
                    config.Name = nodeCity.Attributes["name"].Value;
                    config.OnOff = nodeCity.ChildNodes[1].InnerXml.Trim();
                    config.DateType = nodeCity.ChildNodes[2].InnerXml.Trim();
                    config.UrlValue = nodeCity.ChildNodes[3].InnerXml.Trim();
                    if (config.Name == "newDisk")
                        config.update = nodeCity.ChildNodes[4].InnerXml.Trim();
                    list.Add(config);
                }
            }
            file.Close();
            file.Dispose();
            return list;
            
        }
        /// <summary>
        /// 读取邮件信息
        /// </summary>
        /// <returns></returns>
        public static Mail GetMail()
        {
            string path = ConfigurationManager.ConnectionStrings["pathXml"].ConnectionString;
            FileStream file = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            XmlDocument doc = new XmlDocument();
            doc.Load(file);
            //E-mail节点下所有属性
            XmlNodeList xnl = doc.GetElementsByTagName("E-mail");
            XmlNodeList mailXml = xnl[0].ChildNodes[0].ChildNodes;
            Mail mail = new Mail();
            mail.Name = mailXml[0].InnerXml.Trim();
            mail.Pwd = mailXml[1].InnerXml.Trim();
            mail.Host = mailXml[2].InnerXml.Trim();
            mail.mailAddress = mailXml[3].InnerXml.Trim();
            file.Close();
            file.Dispose();
            return mail;

        }
        /// <summary>
        /// 关闭开关
        /// </summary>
        /// <param name="Name">枚举</param>
        public static void UpdateXml(NameXMLType Name)
        {
            string xmlPath = ConfigurationManager.ConnectionStrings["pathXml"].ConnectionString;
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            xmlDoc.SelectSingleNode("root/Monitored/type[@name='" + Name.ToString() + "']/onoff").InnerText = "no";
            xmlDoc.Save(xmlPath);
        }
        /// <summary>
        /// 新房案例 是更新或插入
        /// </summary>
        /// <returns></returns>
        public static string GetUpdatenewDisk()
        {
            string xmlPath = ConfigurationManager.ConnectionStrings["pathXml"].ConnectionString;
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            return xmlDoc.SelectSingleNode("root/Monitored/type[@name='newDisk']/updata").InnerText;
       
        }