Eager Load many to Many - EF Core [closed]

Answer 1

Just use ThenInclude() statement:

public class order
{
    public int id { get; set; }    
    public virtual IList OrderProducts { get; set; }
}
//...
public IEnumerable GetAll()
{
    return dataContext.Orders
                      .Include(order => order.OrderProducts)
                      .ThenInclude(orderProducts => orderProducts.Product);
}

As stated here, many-to-many relation is not yet implemented. You have to load your OrderProducts then Select(orderProducts => orderProducts.Product)

Important: IntelliSense completion might tell you can't do this, but you can, just make a real build and it will work