The ObjectContext instance has been disposed and can no longer be used for operations that require a connection. in Reference table

Question

I have two tables Customers and Country and use ( Entity Framework with vs 2012 )

Answer 1

there is one more solution, using ViewBag

using(var db = new jQGridEntities())
{
    var customers = db.Customers.Where(c=>c.Country!=null).ToList();
    ViewBag.customerlist= customers;
}