Dot Net Parsing Oracle Access Manager XML

This is slightly off topic, and extends well beyond just Oracle Access Manager but was a little less than obvious to me the first time I had to do this in .NET (well, also the second time). If the XML you are trying to process with SelectNodes or SelectSingleNode contains a namespace then you need to associate that namespace with a namespace manager and include it in the SelectNodes or SelectSingleNode statement (see example below).
 

XmlDocument xml = new XmlDocument();
xml.LoadXml(someXmlString);
XmlNamespaceManager ns = new XmlNamespaceManager(xml.NameTable);
ns.AddNamespace("default", "http://www.oblix.com/");
attrNodes=xml.SelectNodes("/default:ObEventParams/default:ObParamList[@name='WfAttribute']/default:ObParam", ns);