C#高级编程：使用XPath命名空间中的类[1]

       while(iter.MoveNext())
       {
          LoadBook(iter.Current);
       }
    }
    private void LoadBook(XPathNavigator lstNav)
    {
       //We are passed an XPathNavigator of a particular book node
       //we will select all of the descendents and
       //load the list box with the names and values
     
       XPathNodeIterator iterBook=lstNav.SelectDescendants
                                  (XPathNodeType.Element, false);
       while(iterBook.MoveNext())
          listBox1.Items.Add(iterBook.Current.Name + ": "

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