Cannot convert lambda expression to type 'string' because it is not a delegate type

Question

In my controller i am trying to use include with EF4 to select related entities, but the lambda expression is throwing the following error,

i have the related entity de

Answer 1

Well, the post is quite old, but just replying here to update it. Well, the Include() method with Entity Framework 4.1 has extension methods and it also accepts a lambda expression. So

context.CustomerSites.Include(c => c.Customer);

is perfectly valid, all you need to do is use this:

using System.Data.Entity;