Question

I have the following XML.

<ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://localhost/gsainis/GsaInisWebService">
    <string>
        <gsafeed>
            <group action="add">
                <record>
                 ......
                 ......
                </record>
            </group>
        </gsafeed>
   </string>
</ArrayOfString>

I am using C# code (.NET 4.0) to parse this XML. I am using the code below to select all <record> nodes in the above XML.

XmlNamespaceManager xmlnsmgr = new XmlNamespaceManager(INISRecordXMLdoc.NameTable);
xmlnsmgr.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
xmlnsmgr.AddNamespace("xsd", "http://www.w3.org/2001/XMLSchema");
xmlnsmgr.AddNamespace(string.Empty, "http://localhost/gsainis/GsaInisWebService");

foreach (XmlNode node in INISRecordXMLdoc.SelectNodes("//ArrayOfString/string/gsafeed/group/record",xmlnsmgr))
{
    //Do something
}

The problem is the foreach loop is never executed. What should be correct XPath to be used such that I get all the <record> nodes?

Answer 1

Try this – I’ve had trouble in the past with having an “empty” XML prefix:

XmlNamespaceManager xmlnsmgr = new XmlNamespaceManager(INISRecordXMLdoc.NameTable);
xmlnsmgr.AddNamespace("ns", "http://localhost/gsainis/GsaInisWebService");

foreach (XmlNode node in INISRecordXMLdoc.SelectNodes("//ns:ArrayOfString/ns:string/ns:gsafeed/ns:group/ns:record", xmlnsmgr))
{
   // Do something
}

Use something other than an empty string – and use that XML namespace prefix in your XPath.