I want to get multiple nested levels of child tables in Entity Framework Core using eager loading. I don't think lazy loading is implemented yet.
I found an answer for EF6.
var company = context.Companies .Include(co => co.Employees.Select(emp => emp.Employee_Car)) .Include(co => co.Employees.Select(emp => emp.Employee_Country)) .FirstOrDefault(co => co.companyID == companyID);
My problem is that
Select is not recognized in EF Core
Error CS1061 'Employees' does not contain a definition for 'Select' and no extension method 'Select' accepting a first argument of type 'Employees' could be found (are you missing a using directive or an assembly reference?)
My included namespaces:
using MyProject.Models; using Microsoft.Data.Entity; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks;
What is the alternative for
Select in EF Core.
You can use the keyword
var company = context.Companies .Include(co => co.Employees).ThenInclude(emp => emp.Employee_Car) .Include(co => co.Employees).ThenInclude(emp => emp.Employee_Country) .FirstOrDefault(co => co.companyID == companyID);
Also, the .ThenInclude intellisense for only works up to the 3rd level, for example:
_Context.A.Include(a => a.B).ThenInclude(B => B.C).ThenInclude(C => C.D)
The last part of that statement:
.ThenInclude(C => C.D)
won't show "D", so you have to type D in yourself, then wait for a short period of time for the compilation error to disappear!