Imports System
Imports System.IO
Imports System.Xml

Public Class Sample

  Public Shared Sub Main()

      Dim doc As XmlDocument = New XmlDocument()
      doc.Load("newbooks.xml")

      ' Create an XmlNamespaceManager for to resolve the default namespace.
      Dim nsmgr As XmlNamespaceManager = New XmlNamespaceManager(doc.NameTable)
      nsmgr.AddNamespace("bk", "urn:newbooks-schema")

      ' Select and display all book titles.
      Dim nodeList As XmlNodeList 
      Dim root As XmlElement = doc.DocumentElement
      nodeList = root.SelectNodes("/bk:bookstore/bk:book/bk:title", nsmgr)
      Dim title as XmlNode
      For Each title In nodeList
        Console.WriteLine(title.InnerXml)
      Next

  End Sub
End Class

using System;
using System.IO;
using System.Xml;

public class Sample
{
  public static void Main()
  {

      XmlDocument doc = new XmlDocument();
      doc.Load("newbooks.xml");

      // Create an XmlNamespaceManager to resolve the default namespace.
      XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
      nsmgr.AddNamespace("bk", "urn:newbooks-schema");

      // Select and display all book titles.
      XmlNodeList nodeList;
      XmlElement root = doc.DocumentElement;
      nodeList = root.SelectNodes("/bk:bookstore/bk:book/bk:title", nsmgr);
      foreach (XmlNode title in nodeList) {
        Console.WriteLine(title.InnerXml);
      }

   }

}

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->Load( L"newbooks.xml" );

   // Create an XmlNamespaceManager to resolve the default namespace.
   XmlNamespaceManager^ nsmgr = gcnew XmlNamespaceManager( doc->NameTable );
   nsmgr->AddNamespace( L"bk", L"urn:newbooks-schema" );

   // Select and display all book titles.
   XmlNodeList^ nodeList;
   XmlElement^ root = doc->DocumentElement;
   nodeList = root->SelectNodes( L"/bk:bookstore/bk:book/bk:title", nsmgr );
   System::Collections::IEnumerator^ myEnum = nodeList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      XmlNode^ title = safe_cast<XmlNode^>(myEnum->Current);
      Console::WriteLine( title->InnerXml );
   }

   return 1;
}