using System;

using System.Xml;

using System.Xml.Linq;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var xml = @"

<JMF SenderID='InkZone-Controller' Version='1.2' xmlns='http://www.CIP4.org/JDFSchema_1_1'>

    <Command ID='cmd.00695' Type='Resource'>

        <ResourceCmdParams ResourceName='InkZoneProfile' JobID='K_41'>

            <InkZoneProfile ID='r0013' Class='Parameter' Locked='false' Status='Available' PartIDKeys='SignatureName SheetName Side Separation' DescriptiveName='Schieberwerte von DI' ZoneWidth='32'>

                <InkZoneProfile SignatureName='SIG1'>

                    <InkZoneProfile Locked='false' SheetName='S1'>

                        <InkZoneProfile Side='Front'>

                            <InkZoneProfile Separation='designer PG 1901' ZoneSettingsX='0.391 '/>

​

                        </InkZoneProfile>

                    </InkZoneProfile>

                </InkZoneProfile>

            </InkZoneProfile>

        </ResourceCmdParams>

    </Command>

</JMF>";

        var xmlDoc = new XmlDocument();

        xmlDoc.LoadXml(xml);

        XmlNode root = xmlDoc.DocumentElement;

        XmlNamespaceManager nsmgr = new XmlNamespaceManager(xmlDoc.NameTable);

        nsmgr.AddNamespace("CIP4NS", "http://www.CIP4.org/JDFSchema_1_1");

        var parent = root.SelectSingleNode("//CIP4NS:Command/CIP4NS:ResourceCmdParams/CIP4NS:InkZoneProfile/CIP4NS:InkZoneProfile/CIP4NS:InkZoneProfile/CIP4NS:InkZoneProfile", nsmgr);

​

        Console.WriteLine(parent.OuterXml);

    }

}