using System;

using System.Linq;

using  System.Xml;

using System.Xml.Linq;

​

​

public class Program

{

    public static void Main()

    {

        string xml = @"<WebServiceResponse xmlns='ws.abc.com'>

  <SubscriptionInfo xmlns='ws.abc.com'>

    <LicenseStatusCode>0</LicenseStatusCode>

    <Amount>0</Amount>

  </SubscriptionInfo>

  <VerificationResponse xmlns='www.abc.com'>

    <VerificationResult>

      <ServiceStatus>

        <StatusNbr>304</StatusNbr>

        <StatusDescription>Address Not Found</StatusDescription>

      </ServiceStatus>

      <ServiceResult />

    </VerificationResult>

  </VerificationResponse>

</WebServiceResponse>";

        XDocument doc = XDocument.Parse(xml);

        XNamespace xmlNamespace = "www.abc.com";

        var ResultNode =

            from a in doc.Descendants(xmlNamespace + "VerificationResponse").Descendants(xmlNamespace + "StatusDescription")select a.Value;

        foreach (var item in ResultNode)

            Console.WriteLine(item);

    }

}