The specified type member 'UsersCount' is not supported in LINQ to Entities

Question

I have such POCO entity

  public class Product : Entity

 {
        [DatabaseGenerated(DatabaseGeneratedOption.None)]
        public int Id { get; set; }
            


        

Answer 1

Try this instead:

   var model = _productService.GetAll().Select(p => new AdminProductViewModel
   {
      Active = p.Active,
      Id = p.Id,
      Name = p.Name,
      UsersCount = p.Orders.Count()
   }).ToList();

Linq to Entities can't translate the Product.UsersCount property into sql so it gives you the error message

The specified type member 'UsersCount' is not supported in LINQ to Entities