C#-xml file Extract string + string Save as XML file + Create XML (custom node) file + Read node content

one, write the string to the XML file (and save)
Write:
XmlDocument Xdoc = new XmlDocument ();
Xdoc. LOADXML ("xmlstring");
Save:
Xdoc. Save ("Pathsave.xml")

ii. Assigning an XML file to a string
To read an XML file:
XmlDocument Xdoc = new XmlDocument ();
Xdoc. Load ("Pathload.xml");
return string:
Xdoc. Innerxml:xmlstring is your XML string

iii. Creating an XML file from a node
XmlTextWriter myXmlTextWriter = new XmlTextWriter (System.Web.HttpContext.Current.Server.MapPath (Path), SYSTEM.TEXT.ENCODING.UTF8);

myXmlTextWriter.Formatting = formatting.indented;

Myxmltextwriter.writestartdocument (FALSE);

Myxmltextwriter.writestartelement ("Respond"); Root node

Myxmltextwriter.writestartelement ("Head"); Head node

Myxmltextwriter.writeelementstring ("Return_code", data value); The content node of the head node
Myxmltextwriter.writeelementstring ("Return_desc", data value);
Myxmltextwriter.writeelementstring ("return_msg", data value);

Myxmltextwriter.writeendelement (); End of head node
Myxmltextwriter.writeendelement ();//root node end

Myxmltextwriter.flush ();
Myxmltextwriter.close ();

Iv. reading XML files by node
1. Create the Respond entity class First: (String * get;set;)
Content includes
Sting Return_code,return_msg,return_desc

/* * 获取RespondLog日志信息 * */public List<Respond> GetRespondLogXML(string path){    XmlDocument doc = new XmlDocument();    doc.Load(System.Web.HttpContext.Current.Server.MapPath(path));    XmlNode xn = doc.SelectSingleNode("Respond");    XmlNodeList xnl = xn.ChildNodes;    List<Respond> logList = new List<Respond>();    foreach (XmlNode xn1 in xnl)    {        Respond log = new Respond();        XmlElement xe = (XmlElement)xn1;        XmlNodeList xnl0 = xe.ChildNodes;        log.Return_code = xnl0.Item(0).InnerText;        log.Return_msg = xnl0.Item(1).InnerText;        log.Return_desc = xnl0.Item(2).InnerText;        logList.Add(log);    }    return logList;}

//Read Respond.xml file information
List loglist = new list ();
Loglist = Getrespondlogxml (Respondlog);
Return_code = loglist[0]. Return_code;
Return_msg = loglist[0]. return_msg;
Return_desc = loglist[0]. Return_desc;

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C#-xml file Extract string + string Save as XML file + Create XML (custom node) file + Read node content