csharp: read xml

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//               string xmldata = AppDomain.CurrentDomain.BaseDirectory.ToString() + @"xml\涂聚文.xml";               XElement xe = XElement.Load(xmldata);               IEnumerable<XElement> element = from ele in xe.Elements("dataserver")                                              // where ele.Attribute("id").Value == "1"                                          select ele;                 if (element.Count() > 0)               {                   List<ServerConfig> infos=showInfoByElements(element);               }                 XmlDocument xmlDoc = new XmlDocument();               xmlDoc.Load(xmldata);               XmlElement xed = xmlDoc.DocumentElement; // DocumentElement 获取xml文档对象的根XmlElement.               string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", "1");               XmlElement selectXe = (XmlElement)xed.SelectSingleNode(strPath);  //selectSingleNode 根据XPath表达式,获得符合条件的第一个节点.                 XmlNodeList elementdd = selectXe.ChildNodes;                   XmlNodeList senode = xed.SelectSingleNode(strPath).ChildNodes;               foreach (XmlNode childNode in senode)               {                   XmlElement childElement = (XmlElement)childNode;                   string ddd = childElement.InnerText;// childElement.GetAttribute("database");                   string ddt = childNode.InnerText;                 }                foreach (XmlNode ee in selectXe.ChildNodes)               {                                         string dd = ee.InnerText;                                  }                 MessageBox.Show("連接塗聚文成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

　　

 

 

 

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/// <summary>     ///     /// </summary>     /// <param name="elements"></param>     private List<ServerConfig> showInfoByElements(IEnumerable<XElement> elements)     {         List<ServerConfig> modelList = new List<ServerConfig>();         List<Databases> dslist=null;         foreach (var ele in elements)         {               dslist = new List<Databases>();             ServerConfig model = new ServerConfig();             model.id = ele.Attribute("id").Value;// ele.Element("id").Value;             model.server = ele.Attribute("server").Value; //ele.Element("server").Value;             model.setdatabase = ele.Attribute("setdatabase").Value;// ele.Element("setdatabase").Value;             model.user = ele.Attribute("user").Value;             model.password = ele.Attribute("password").Value;             model.database = ele.Element("database").Value;               string xmldata = AppDomain.CurrentDomain.BaseDirectory.ToString() + @"xml\geovindu.xml";             XmlDocument xmlDoc = new XmlDocument();             xmlDoc.Load(xmldata);             XmlElement xed = xmlDoc.DocumentElement; // DocumentElement 获取xml文档对象的根XmlElement.             string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", model.id);             XmlElement selectXe = (XmlElement)xed.SelectSingleNode(strPath);  //selectSingleNode 根据XPath表达式,获得符合条件的第一个节点.             XmlNodeList elementdd = selectXe.ChildNodes;               XmlNodeList senode = xed.SelectSingleNode(strPath).ChildNodes;             foreach (XmlNode childNode in senode)             {                 XmlElement childElement = (XmlElement)childNode;                 string ddd = childElement.InnerText;// childElement.GetAttribute("database");                 string ddt = childNode.InnerText;                 Databases inf = new Databases();                 inf.database = childElement.InnerText;                 dslist.Add(inf);               }             foreach (XmlNode ee in selectXe.ChildNodes)             {                   string dd = ee.InnerText;             }               model.ListData = dslist;             modelList.Add(model);           }                        return modelList;     }

　　

 

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/// <summary> /// /// </summary> public class ServerConfig {     /// <summary>     ///     /// </summary>     public string id { get; set; }     /// <summary>     ///     /// </summary>     public string server  { get; set; }     /// <summary>     ///     /// </summary>     public string setdatabase  { get; set; }     /// <summary>     ///     /// </summary>     public string user  { get; set; }     /// <summary>     ///     /// </summary>     public string password  { get; set; }     /// <summary>     ///     /// </summary>     public string database  { get; set; }     /// <summary>     ///一个服务器下，多个数据 数据库名称列表     /// </summary>     public List<Databases> ListData { get; set; }   } /// <summary> /// 数据库名称类 /// </summary> public class Databases {     /// <summary>     /// 数据库名称     /// </summary>     public string database { get; set; }   }

　XML:

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<?xml version="1.0" encoding="utf-8"?> <ServerConfig>   <dataserver server="GEOVINDU" setdatabase="GeovinDu" user="geovindu" password="涂聚文" id="1">     <database>塗聚文 Geovin Du</database>   </dataserver> </ServerConfig>

　

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bool isok=ConnectionTestInfo.ConnectionTest(combServer.Text, combDatabase.Text, this.txtbUser.Text.Trim(), this.txtbPassword.Text.Trim());             if (isok)             {                 string newdata = string.Empty;                 string newserver = string.Empty;                 //考虑没有进行添加                 xmldatafile = AppDomain.CurrentDomain.BaseDirectory.ToString() + @"xml\涂聚文 Geovin Du.xml";                 xmlserverfile = AppDomain.CurrentDomain.BaseDirectory.ToString() + @"xml\塗聚文Geovin Du.xml";                XElement xedata = XElement.Load(xmldatafile);                //IEnumerable<XElement> xdedata = xedata;                IEnumerable<XElement> element = from ele in xedata.Elements("dataserver")                                                where ele.Attribute("id").Value == "1"                                                select ele;                bool exists = false;                List<string> lis = new List<string>();                  if (element.Count() > 0)                {                    foreach (var ele in element)                    {                        if (!object.Equals(ele.Element("database"), null))                        {                            //lis.Add(ele.Element("database").Value);       //只查了第一条                            XmlDocument xmlDoc = new XmlDocument();                            xmlDoc.Load(xmldatafile);                            XmlElement xed = xmlDoc.DocumentElement; // DocumentElement 获取xml文档对象的根XmlElement.                            string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", ele.Attribute("id").Value); //eles.Element("server").Value                            XmlElement selectXe = (XmlElement)xed.SelectSingleNode(strPath);  //selectSingleNode 根据XPath表达式,获得符合条件的第一个节点.                            XmlNodeList elementdd = selectXe.ChildNodes;                            XmlNodeList senode = xed.SelectSingleNode(strPath).ChildNodes;                            foreach (XmlNode childNode in senode)                            {                                XmlElement childElement = (XmlElement)childNode;                                string ddd = childElement.InnerText;// childElement.GetAttribute("database");                                string ddt = childNode.InnerText;                                lis.Add(childElement.InnerText);                                                              }                            foreach (XmlNode ee in selectXe.ChildNodes)                            {                                  string dd = ee.InnerText;                            }                          }                        }                    exists = lis.Contains(combDatabase.Text.Trim());                    if (lis.Count > 0)                    {                                              newdata = combDatabase.Text.Trim();                            if (!exists)                            {                                XmlDocument doc = new XmlDocument();                                doc.Load(xmldatafile);                                XmlNode root = doc.SelectSingleNode("ServerConfig");                                XmlElement xelAuthor = doc.CreateElement("database");                                xelAuthor.InnerText = newdata;                                string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", "1");                                XmlElement xelKey = (XmlElement)doc.SelectSingleNode(strPath); //doc.SelectSingleNode("");                                xelKey.AppendChild(xelAuthor);                                doc.Save(xmldatafile);                            }                     }                    else                    {                        XmlDocument doc = new XmlDocument();                        doc.Load(xmldatafile);                        XmlNode root = doc.SelectSingleNode("ServerConfig");                        XmlElement xelAuthor = doc.CreateElement("database");                        xelAuthor.InnerText = combDatabase.Text.Trim();                        string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", "1");                        XmlElement xelKey = (XmlElement)doc.SelectSingleNode(strPath); //doc.SelectSingleNode("");                        xelKey.AppendChild(xelAuthor);                        doc.Save(xmldatafile);                    }                }                else                {                    newdata = combDatabase.Text.Trim();                    XmlDocument doc = new XmlDocument();                    doc.Load(xmldatafile);                    XmlNode root = doc.SelectSingleNode("ServerConfig");                    XmlElement xelAuthor = doc.CreateElement("database");                    xelAuthor.InnerText = newdata;                    string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", "1");                    XmlElement xelKey = (XmlElement)doc.SelectSingleNode(strPath); //doc.SelectSingleNode("");                    xelKey.AppendChild(xelAuthor);                    doc.Save(xmldatafile);                }                    lis = new List<string>();                 //操作                XElement xeserver = XElement.Load(xmlserverfile);                IEnumerable<XElement> eleserver = from eles in xeserver.Elements("dataserver")                                                where eles.Attribute("id").Value == "1"                                                select eles;                if (eleserver.Count() > 0)                {                    foreach (var eles in eleserver)                    {                        if (!object.Equals(eles.Element("server"), null))                        {                           // lis.Add(eles.Element("server").Value);  //只查了第1条                            XmlDocument xmlDoc = new XmlDocument();                            xmlDoc.Load(xmlserverfile);                            XmlElement xed = xmlDoc.DocumentElement; // DocumentElement 获取xml文档对象的根XmlElement.                            string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", eles.Attribute("id").Value);   //eles.Element("server").Value                            XmlElement selectXe = (XmlElement)xed.SelectSingleNode(strPath);  //selectSingleNode 根据XPath表达式,获得符合条件的第一个节点.                            XmlNodeList elementdd = selectXe.ChildNodes;                            XmlNodeList senode = xed.SelectSingleNode(strPath).ChildNodes;                            foreach (XmlNode childNode in senode)                            {                                XmlElement childElement = (XmlElement)childNode;                                string ddd = childElement.InnerText;// childElement.GetAttribute("database");                                string ddt = childNode.InnerText;                                lis.Add(childElement.InnerText);                                }                            foreach (XmlNode ee in selectXe.ChildNodes)                            {                                  string dd = ee.InnerText;                            }                            }                      }                    exists = false;                    if (lis.Count > 0)                    {                            exists = lis.Contains(combServer.Text.Trim());                        newserver = combServer.Text.Trim();                        if (!exists)                        {                            XmlDocument doc = new XmlDocument();                            doc.Load(xmlserverfile);                            XmlNode root = doc.SelectSingleNode("ServerConfig");                            XmlElement xelAuthor = doc.CreateElement("server");                            xelAuthor.InnerText = newserver;                            string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", "1");                            XmlElement xelKey = (XmlElement)doc.SelectSingleNode(strPath); //doc.SelectSingleNode("");                            xelKey.AppendChild(xelAuthor);                            doc.Save(xmlserverfile);                        }                    }                    else                    {                        XmlDocument doc = new XmlDocument();                        doc.Load(xmlserverfile);                        XmlNode root = doc.SelectSingleNode("ServerConfig");                        XmlElement xelAuthor = doc.CreateElement("server");                        xelAuthor.InnerText = combServer.Text.Trim();                        string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", "1");                        XmlElement xelKey = (XmlElement)doc.SelectSingleNode(strPath); //doc.SelectSingleNode("");                        xelKey.AppendChild(xelAuthor);                        doc.Save(xmlserverfile);                    }                  }                else                {                    newserver = combServer.Text.Trim();                    XmlDocument doc = new XmlDocument();                    doc.Load(xmlserverfile);                    XmlNode root = doc.SelectSingleNode("ServerConfig");                    XmlElement xelAuthor = doc.CreateElement("server");                    xelAuthor.InnerText = newserver;                    string strPath = string.Format("/ServerConfig/dataserver[@id=\"{0}\"]", "1");                    XmlElement xelKey = (XmlElement)doc.SelectSingleNode(strPath); //doc.SelectSingleNode("");                    xelKey.AppendChild(xelAuthor);                    doc.Save(xmlserverfile);                }                       MessageBox.Show("連i涂聚文成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);             }             else             {                 MessageBox.Show("没有找到涂聚文,重来一次", "提示", MessageBoxButtons.OK, MessageBoxIcon.Question);                 return;             }   //指定修改值              SchemasNameListInfo info=model.schemaname(this.txtbUser.Text.Trim(), this.txtConnection.Text.Trim());             SchemasNameInfo.SchemasName = info.SchemaName;             bool ok= model.CreateFun(combDatabase.Text.ToString().Trim(),serverstr);             if (ok)             {                 xmlfile = AppDomain.CurrentDomain.BaseDirectory.ToString() + @"xml\涂聚文.xml";                //edit xml                 XElement xe = XElement.Load(xmlfile);                 if (info.DatabaseName != null)                 {                     //dgvBookInfo.CurrentRow.Cells[1]对应着ISBN号                     string id = "1";                     IEnumerable<XElement> element = from ele in xe.Elements("dataserver")                                                     where ele.Attribute("id").Value == id                                                     select ele;                     if (element.Count() > 0)                     {                         XElement first = element.First();                         ///设置新的属性                         first.SetAttributeValue("server", combServer.Text.ToString().Trim());                         first.SetAttributeValue("database", combDatabase.Text.ToString().Trim());                         first.SetAttributeValue("user", txtbUser.Text.ToString().Trim());                         first.SetAttributeValue("password", txtbPassword.Text.ToString().Trim());                         ///替换新的节点                         first.ReplaceNodes(                                   new XElement("server", combServer.Text.ToString().Trim()),                                 new XElement("database", combDatabase.Text.ToString().Trim()),                                   new XElement("user", txtbUser.Text.Trim()),                                    new XElement("password", txtbPassword.Text.Trim())                                  );                     }                     xe.Save(xmlfile);                 }                            MessageBox.Show("配置涂聚文成功！");             }             else             {                 MessageBox.Show("配置涂聚文不成功！");             }