C#对xml的操作

xml的写操作：

public void WriteXML(string FileName,string server,string IDServiceid,string name)   {    if (!File.Exists(FileName))        {            XmlTextWriter textWriter = new XmlTextWriter(FileName,null);            textWriter.Formatting = Formatting.Indented;

            // 开始写过程，调用WriteStartDocument方法            textWriter.WriteStartDocument();

            // 写入说明            textWriter.WriteComment("First Comment XmlTextWriter Sample Example");            textWriter.WriteComment("YtConfig.xml in root dir");

            //创建一个节点            textWriter.WriteStartElement("Server");            //textWriter.WriteElementString("MapServers","");            //textWriter.WriteElementString("site", "w3sky.com");            textWriter.WriteEndElement();

            // 写文档结束，调用WriteEndDocument方法            textWriter.WriteEndDocument();

           // 关闭textWriter           textWriter.Close();

        }           //初始化XML文档操作类        XmlDocument myDoc = new XmlDocument();        //加载XML文件        myDoc.Load(FileName);

        //添加元素--UserCode        XmlElement ele = myDoc.CreateElement("UserCode");        XmlText text = myDoc.CreateTextNode(server);

        //添加元素--UserName        XmlElement ele1 = myDoc.CreateElement("UserName");        XmlText text1 = myDoc.CreateTextNode(IDServiceid);

        //添加元素--UserPwd        XmlElement ele2 = myDoc.CreateElement("UserPwd");        XmlText text2 = myDoc.CreateTextNode(name);

        //添加节点 User要对应我们xml文件中的节点名字        XmlNode newElem = myDoc.CreateNode("element", "User", "");

        //在节点中添加元素        newElem.AppendChild(ele);        newElem.LastChild.AppendChild(text);        newElem.AppendChild(ele1);        newElem.LastChild.AppendChild(text1);        newElem.AppendChild(ele2);        newElem.LastChild.AppendChild(text2);        XmlNode roots = myDoc.CreateNode("element", "MapServers", "");        roots.AppendChild(newElem);

        //将节点添加到文档中        XmlElement root = myDoc.DocumentElement;        root.AppendChild(roots);

        //保存        myDoc.Save(FileName);       }

生成的xml为：

<?xml version="1.0"?><!--First Comment XmlTextWriter Sample Example--><!--YtConfig.xml in root dir--><Server>  <MapServers>    <User>      <UserCode>      </UserCode>      <UserName>      </UserName>      <UserPwd>      </UserPwd>    </User>  </MapServers></Server>

读操作：

public string ReadXML(string path, string id) {        string stat = null;        string FileName = AppDomain.CurrentDomain.BaseDirectory;        FileName += path + ".xml";        string type = path + "s";        if (File.Exists(FileName))        {            //初始化XML文档操作类            XmlDocument myDoc = new XmlDocument();            //加载XML文件            myDoc.Load(FileName);            if (myDoc.SelectSingleNode(type).ChildNodes.Count != 0)            {                XmlNodeList nodeList = myDoc.SelectSingleNode(type).ChildNodes;                foreach (XmlNode xn in nodeList)                {                    XmlElement xe = (XmlElement)xn;                    if (xe.GetAttribute("IDServiceid") == id)                    {                        stat = "fail";                        break;                    }                    else { stat = "ok"; }                }            }            else { stat = "ok"; }        }        else        {            return stat = "ok";        }        return stat;

    }

删除节点操作：

public string DelXML(string id, string path)    {        string stat = null;        string FileName = AppDomain.CurrentDomain.BaseDirectory;        string type = path + "s";        FileName += path + ".xml";        if (File.Exists(FileName))        {            //初始化XML文档操作类            XmlDocument myDoc = new XmlDocument();            //加载XML文件            myDoc.Load(FileName);            if (myDoc.SelectSingleNode(type).ChildNodes.Count != 0)            {                XmlNodeList nodeList = myDoc.SelectSingleNode(type).ChildNodes;                foreach (XmlNode xn in nodeList)                {                    XmlElement xe = (XmlElement)xn;                    if (xe.GetAttribute("IDServiceid") == id)                    {                        myDoc.SelectSingleNode(type).RemoveChild(xe);                        stat = "ok";                        myDoc.Save(FileName);                        break;                    }                    else                    {                        stat = "error";                    }                }            }            else {                stat = "error";            }        }        else        {            stat = "error";        }        return stat;    }

转载于:https://www.cnblogs.com/Mygirl/archive/2011/06/25/2090319.html