Projecting into KeyValuePair via EF / Linq

Question

I\'m trying to load a list of KeyValuePairs from an EF / Linq query like this:

return (from o in context.myTable 
select new KeyValuePair

        

Answer 1

Since LINQ to Entities does not support KeyValuePair, you should turns to LINQ to Object by using AsEnumerable first:

return context.myTable
              .AsEnumerable()
              .Select(new KeyValuePair(o.columnA, o.columnB))
              .ToList();