This is an exercise against the Northwind DB Customers table.  I have an XML Linq query that works fine in winform -- but not working in my simple aspx page (VS2012).  I have an Entity that only includes the Customers table from the Northwind DB.  The error message is pretty basic "xml linq query not supported"  I am including the code behind, the webform source code, and the Entity code -- and hope someone could see what I am doing incorrectly.  I will guess that I need to put my xml linq query in it's own class.  Any suggestions apprecicated how to make this work.
--Code Behind
using System; using System.Collections.Generic; using System.Configuration; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Xml.Linq; using System.Xml.XPath ...

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