Microsoft.Protocols.TestSuites.Common.SchemaValidation.GetSoapFaultDetailBody C# (CSharp) Method

        public static string GetSoapFaultDetailBody(string soapBody)
        {
            string detailBody = null;
            string elementName = null;

            XmlDocument doc = new XmlDocument();
            doc.LoadXml(soapBody);

            // Prepare XPath
            string soapVersion = Common.GetConfigurationPropertyValue("SoapVersion", site);

            if (string.Compare(soapVersion, "SOAP11", true) == 0)
            {
                elementName = "detail";
            }

            if (string.Compare(soapVersion, "SOAP12", true) == 0)
            {
                elementName = "Detail";
            }

            // [Note] According to SOAP1.1 and SOAP 1.2 definitions, SOAP1.1 defines subelement 'detail' in SOAP Fault element, SOAP1.2 defines subelement "Detail". But actually, whether the soap fault response message are formatted 
            //  with SOAP 1.1 or 1.2, the subelement name in O12, O14 and O15 response is still "detail".
            string path = string.Format("//{0}", elementName.ToLower());

            XmlNode detailNode = doc.SelectSingleNode(path);

            XmlElement detailElement = (XmlElement)detailNode;
            detailElement.SetAttribute("xmlns", detailNode.FirstChild.NamespaceURI);
            detailBody = detailElement.OuterXml;

            return detailBody;
        }