Entity Framework core .Include() issue

Question

Been having a play about with ef core and been having an issue with the include statement. For this code I get 2 companies which is what i expected.

Answer 1

Lazy loading is not yet possible with EF Core. Refer here.

Alternatively you can use eager loading.

Read this article

Below is the extension method i have created to achieve the eager loading.

Extension Method:

public static IQueryable IncludeMultiple(
    this IQueryable source,
    List>> navigationPropertyPath) where TEntity : class
{
    foreach (var navExpression in navigationPropertyPath)
    {
        source= source.Include(navExpression);
    }
    return source.AsQueryable();
}

Repository Call:

public async Task FindOne(ISpecification spec)
{
    return await Task.Run(() => Context.Set().AsQueryable().IncludeMultiple(spec.IncludeExpression()).Where(spec.IsSatisfiedBy).FirstOrDefault());
}

Usage:

List