How can i convert a DBQuery to an ObjectQuery?

Question

I\'ve got a DBQuery which converts to an IQueryable (this bit works fine). But then I\'m trying to convert the IQueryable to an O

Answer 1

Not sure what you're trying to do with it, but would a dynamic variable help?

Using Type dynamic (C# Programming Guide)

Answer 2

DbQuery<T> contains Include method so you don't need to convert to ObjectQuery. ObjectQuery is not accessible from DbQuery instance - it is wrapped in internal type InternalQuery and conversion operator is not defined.

Btw. when you add using System.Data.Entity and refrence CTP5 you will be able to call Include on IQueryable<T>!

Answer 3

Using reflection, you can do this:

var dbQuery = ...;
var internalQueryField = dbQuery.GetType().GetFields(BindingFlags.NonPublic | BindingFlags.Instance).FirstOrDefault(f => f.Name.Equals("_internalQuery"));
var internalQuery = internalQueryField.GetValue(dbQuery);
var objectQueryField = internalQuery.GetType().GetFields(BindingFlags.NonPublic | BindingFlags.Instance).FirstOrDefault(f => f.Name.Equals("_objectQuery"));

// Here's your ObjectQuery!
var objectQuery = objectQueryField.GetValue(internalQuery) as ObjectQuery<T>;