IQueryable does not contain a definition for 'Include' and no extension method 'Include'

Question

I\'m trying to use Include extension on IQueryable set, but I have the following issue:

Error 1 \'System.Linq.IQueryable<.Model.InsuranceCaseType

Answer 1

Include is not an extension method on Queryable, so it doesn't come together with all the usual LINQ methods. If you are using Entity Framework, you need to import the corresponding namespace:

using System.Data.Entity;