How to apply the XPath function 'substring-after'

Question

What is the XPath expression that I would use to get the string following \'HarryPotter:\' for each book.

ie. Given this XML:

Answer 1

In your XML you've got no space between Harry Potter but in your XQuery you've got a space. Just make it match and presto, you'll get data back...

    Dim xml = 
                  HarryPotter:Chamber of Secrets
                  HarryPotter:Prisoners in Azkabahn
                  MyDummyBook:Dummy Title
              

    Dim xdoc As New Xml.XmlDocument
    xdoc.LoadXml(xml.ToString)

    Dim Nodes = xdoc.SelectNodes("/bookstore/book/text()[substring-after(., 'HarryPotter:')]")

    Dim Iter = Nodes.GetEnumerator()
    While Iter.MoveNext
        With DirectCast(Iter.Current, Xml.XmlNode).Value
            Console.WriteLine(.Substring(.IndexOf(":") + 1))
        End With
    End While