Linq-to-Entities Include method not found

Question

I am using EF4 within a MVC3 application and I was looking for a way to view all my contacts within a given workgroup. In the controller I specified:

var wg          


        

Answer 1

I was also facing this issue and resolved it in asp.net core 3.0 project by adding the following reference:

using Microsoft.EntityFrameworkCore;