Confused to write the Compiled queris in linq public static Func> FilteredResults = CompiledQuery.Compile>( (obj) =>obj.customer_pen

 i am trying to write a compiled query fro selecting to data .
here is my query
public static Func<MercuryOneWebEntities,List<customer_pending_items>> FilteredResults = CompiledQuery.Compile<MercuryOneWebEntities, List<customer_pending_items>>( (obj) =>obj.customer_pending_items.ToList()); i am trying to retrieve to list of data from table. 
it will showing the error like 
the MercuryOneWebEntities is cannot to be used as a argument  'TArg0' in the generic type or method CompiledQuery.Compile 
their is no implicit conversion from MercuryOneWebEntities to System.Data.Linq.DataContext
MercuryOneWebEntities is my datacontext