C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Xml;
					
public class Program
{
	public static void Main()
	{
		var xmlPathh = @"<?xml version=""1.0"" encoding=""utf-8""?>
<serv:message
    xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance""
    xmlns:serv=""http://www.webex.com/schemas/2002/06/service"" xsi:schemaLocation=""http://www.webex.com/schemas/2002/06/service http://www.webex.com/schemas/2002/06/service.xsd"">
    <header>
        <securityContext>
            <webExID/>
            <password/>
            <siteID/>
            <partnerID/>
        </securityContext>
    </header>
    <body>
        <bodyContent xsi:type=""java:com.webex.service.binding.training.CreateTrainingSession""
            xmlns=""http://www.webex.com/schemas/2002/06/service/training""
            xmlns:com=""http://www.webex.com/schemas/2002/06/common""
            xmlns:sess=""http://www.webex.com/schemas/2002/06/session""
            xmlns:serv=""http://www.webex.com/schemas/2002/06/service""
            xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xsi:schemaLocation=""http://www.webex.com/schemas/2002/06/service/training http://www.webex.com/schemas/2002/06/service/training/trainingsession.xsd"">
            <sess:accessControl>
                <sess:sessionPassword/>
            </sess:accessControl>
            <sess:schedule></sess:schedule>
            <metaData>
                <sess:confName/>
                <agenda/>
                <description/>
                <greeting/>
                <location/>
            </metaData>
            <enableOptions>
                <chat/>
                <poll/>
                <audioVideo/>
                <fileShare/>
                <applicationShare/>
                <desktopShare/>
                <annotation/>
                <fullScreen/>
                <voip/>
            </enableOptions>
        </bodyContent>
    </body>
</serv:message>";// this holds above xml
		XmlDocument xmlDoc = new XmlDocument();
		xmlDoc.LoadXml(xmlPathh);

		var node = xmlDoc.SelectNodes("/serv:message/header/securityContext/*", GetNameSpace(xmlDoc.NameTable));

		var member = xmlDoc.SelectSingleNode("/serv:message/body/body:bodyContent/body:metaData", GetNameSpace(xmlDoc.NameTable));
		member.OuterXml.Dump();
	}

	static XmlNamespaceManager GetNameSpace(XmlNameTable objNameTable)
	{
		XmlNamespaceManager objNsManager =new XmlNamespaceManager(objNameTable);
		objNsManager.AddNamespace("serv", "http://www.webex.com/schemas/2002/06/service");
		objNsManager.AddNamespace("ns1", "http://www.webex.com/schemas/2002/06/service/site");
		objNsManager.AddNamespace("body", "http://www.webex.com/schemas/2002/06/service/training");
        objNsManager.AddNamespace("sess","http://www.webex.com/schemas/2002/06/session");
		return objNsManager;
	}
}

​x
 
using System;
using System.Xml;
                    
public class Program
{
    public static void Main()
    {
        var xmlPathh = @"<?xml version=""1.0"" encoding=""utf-8""?>
<serv:message
    xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance""
    xmlns:serv=""http://www.webex.com/schemas/2002/06/service"" xsi:schemaLocation=""http://www.webex.com/schemas/2002/06/service http://www.webex.com/schemas/2002/06/service.xsd"">
    <header>
        <securityContext>
            <webExID/>
            <password/>
            <siteID/>
            <partnerID/>
        </securityContext>
    </header>
    <body>
        <bodyContent xsi:type=""java:com.webex.service.binding.training.CreateTrainingSession""
            xmlns=""http://www.webex.com/schemas/2002/06/service/training""
            xmlns:com=""http://www.webex.com/schemas/2002/06/common""
            xmlns:sess=""http://www.webex.com/schemas/2002/06/session""
            xmlns:serv=""http://www.webex.com/schemas/2002/06/service""
            xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xsi:schemaLocation=""http://www.webex.com/schemas/2002/06/service/training http://www.webex.com/schemas/2002/06/service/training/trainingsession.xsd"">
            <sess:accessControl>
                <sess:sessionPassword/>
            </sess:accessControl>
            <sess:schedule></sess:schedule>
            <metaData>
                <sess:confName/>
                <agenda/>
                <description/>
                <greeting/>
                <location/>
            </metaData>
            <enableOptions>
                <chat/>
                <poll/>
                <audioVideo/>
                <fileShare/>
                <applicationShare/>
                <desktopShare/>
                <annotation/>
                <fullScreen/>
                <voip/>
            </enableOptions>
        </bodyContent>
    </body>
</serv:message>";// this holds above xml
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.LoadXml(xmlPathh);
​
        var node = xmlDoc.SelectNodes("/serv:message/header/securityContext/*", GetNameSpace(xmlDoc.NameTable));
​
        var member = xmlDoc.SelectSingleNode("/serv:message/body/body:bodyContent/body:metaData", GetNameSpace(xmlDoc.NameTable));
        member.OuterXml.Dump();
    }
​
    static XmlNamespaceManager GetNameSpace(XmlNameTable objNameTable)
    {
        XmlNamespaceManager objNsManager =new XmlNamespaceManager(objNameTable);
        objNsManager.AddNamespace("serv", "http://www.webex.com/schemas/2002/06/service");
        objNsManager.AddNamespace("ns1", "http://www.webex.com/schemas/2002/06/service/site");
        objNsManager.AddNamespace("body", "http://www.webex.com/schemas/2002/06/service/training");
        objNsManager.AddNamespace("sess","http://www.webex.com/schemas/2002/06/session");
        return objNsManager;
    }
}

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