XML (with namespace) read and write operations

XML file:

<?xml version= "1.0" encoding= "UTF-8"?>
<!--This file contains job definitions in schema version 2.0 format--
<job-scheduling-data xmlns= "Http://quartznet.sourceforge.net/JobSchedulingData" xmlns:xsi= "http://www.w3.org/ 2001/xmlschema-instance "version=" 2.0 ">
<processing-directives>
<overwrite-existing-data>true</overwrite-existing-data>
</processing-directives>
<schedule>

<trigger>
<cron>
<name>EmailBDOTrigger_2</name>
<group>EmailBDOTrigger_2</group>
<job-name>EmailBDOTriggerGroup_2</job-name>
<job-group>EmailBDOJob_2</job-group>
<cron-expression>1-2 1-3 1-3 * *? </cron-expression>
</cron>
</trigger>

</schedule>
</job-scheduling-data>

Background:

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text;
Using System.Xml;
Using System.Web;

Namespace Cronmaker
{
Class Xmlhandler
{
String xmlpath = @ "... \.. \quartz_jobs.xml ";
String xmlpath = HttpContext.Current.Server.MapPath ("~/quartz_jobs.xml");

Private String Txtcorn;
Public Xmlhandler (String Txtcorn)
{
This.txtcorn = Txtcorn;
}

public void Changnode ()
{
XmlTextReader tReader = new XmlTextReader ("\\quartz_jobs.xml");
XmlDocument xmldoc = new XmlDocument ();
Xmldoc.normalize ();
Xmldoc.load (Xmlpath);
Namespaces in XML
XmlNamespaceManager xnm = new XmlNamespaceManager (xmldoc.nametable);
Xnm. AddNamespace ("Mxh", "Http://quartznet.sourceforge.net/JobSchedulingData");
String XPath = @ "/mxh:job-scheduling-data/mxh:schedule/mxh:trigger/mxh:cron";

XmlNodeList nodes = Xmldoc.selectsinglenode (XPath, xnm). ChildNodes;
foreach (XmlNode item in nodes)
{
XmlElement element = Item as XmlElement;
Console.WriteLine (element. InnerText);
if (element. Name = = "Cron-expression")
Element. InnerText = Txtcorn;
if (item. Name = = "Cron-expression")
Item. InnerText = Txtcorn;
}
Xmldoc.save (Xmlpath);
}
public void AddNode ()
{
XmlDocument xmldoc = new XmlDocument ();
Xmldoc.normalize ();
Xmldoc.load (Xmlpath);
XmlNamespaceManager xnm = new XmlNamespaceManager (xmldoc.nametable);
Xnm. AddNamespace ("Mxh", "Http://quartznet.sourceforge.net/JobSchedulingData");
String XPath = @ "/mxh:job-scheduling-data/mxh:schedule";
XmlNode root = Xmldoc.selectsinglenode (XPath, xnm);

XmlNode root = Xmldoc.selectsinglenode ("Job-scheduling-data/schedule");

XmlElement trigger = Xmldoc.createelement ("Trigger", XmlDoc.DocumentElement.NamespaceURI);
XmlElement corn = xmldoc.createelement ("cron", XmlDoc.DocumentElement.NamespaceURI);
Join the name node
XmlElement sub1 = xmldoc.createelement ("name", XmlDoc.DocumentElement.NamespaceURI);
Sub1. InnerText = "emailbdotrigger_2";
Corn. AppendChild (SUB1);
Group node
XmlElement sub2 = xmldoc.createelement ("group", XmlDoc.DocumentElement.NamespaceURI);
Sub2. InnerText = "emailbdotrigger_2";
Corn. AppendChild (SUB2);
Job-name node
XmlElement sub3 = xmldoc.createelement ("Job-name", XmlDoc.DocumentElement.NamespaceURI);
Sub3. InnerText = "emailbdotriggergroup_2";
Corn. AppendChild (SUB3);
Job-group node
XmlElement sub4 = xmldoc.createelement ("Job-group", XmlDoc.DocumentElement.NamespaceURI);
Sub4. InnerText = "emailbdojob_2";
Corn. AppendChild (SUB4);
Cron-expression node
XmlElement sub5 = xmldoc.createelement ("Cron-expression", XmlDoc.DocumentElement.NamespaceURI);
Sub5. InnerText = Txtcorn;
Corn. AppendChild (SUB5);

Trigger. AppendChild (corn);
The problem: In Appendchildren, if the parentnode is with the xmlns attribute, the child node will appear xmlns= "" Property if you do not specify xmlns when adding nodes or when you specify NULL
WORKAROUND: Instead of specifying a namespace for a child node, you should specify the same namespace as the parent node
Root. AppendChild (trigger);

Xmldoc.save (Xmlpath);
}

}
}

XML (with namespace) read and write operations