Namespace prefix 'ns0' is not defined

Question

User1216489373 posted

Hi Experts,

I am getting error "Namespace prefix 'ns0' is not defined".

My XML is

<?xml version="1.0"?>
<ns0:AuthResponseSchema xmlns:ns0="http://services.test.com/Auths/">
  <ns0:AuthResponseResult submittertraceid="b715337b-4b75-41ef-b617-e33d728f913c" transactionid="1020374" type="HI-IREQ">
    <ns0:PayerResponseXML type="ReviewResponse">
      <ns0:UtilizationMgmtOrg>
        <ns0:Name type="PR">
          <ns0:LastOrgName>TEST</ns0:LastOrgName>
          <ns0:Identifier type="PI">XXX</ns0:Identifier>
        </ns0:Name>
      </ns0:UtilizationMgmtOrg>
    </ns0:PayerResponseXML>
  </ns0:AuthResponseResult>
</ns0:AuthResponseSchema>

My Code is:

                XmlDocument results = new XmlDocument();
                results.Load(@"C:\WebApp\WebApp\auth.xml");

                var nsmgr = new XmlNamespaceManager(results.NameTable);
                nsmgr.AddNamespace("xsl", "http://www.w3.org/1999/XSL/Transform");

                XmlNodeList xnList = results.SelectNodes("ns0:AuthResponseSchema", nsmgr);

My code is breaking at 

XmlNodeList xnList = results.SelectNodes("ns0:AuthResponseSchema", nsmgr);

Please Help.

Thanks,
Rahul