Question

Given the following POCO Code First Entities

public class Customer
{
    public int CustomerId { get; set; }
    public string CustomerTitle { get; set; }
    public string CustomerFirstName { get; set; }
    public string CustomerLastName { get; set; }

    public ICollection<Order> Orders { get; set; }
}

public class Order
{
   public int OrderId { get; set; }
   ...
   public int CustomerId { get; set; }

   public Customer Customer { get; set; }
}

Using linq you can get the Orders filled in by using the Include property as in

var cust = (from cust in context.Customer
            where cust.CustomerId == 1
            select cust)
            .Include(ord => ord.Orders)
            .FirstOrDefault();

I am trying to get the same result using paramaterised sql, using

        Customer co =  context.Customer.SqlQuery(
                    @"select [Customer].[CustomerId], 
                             ...
                             [Order].[OrderId] AS [OrderId], 
                             ...
                            from Customer join Order on Customer.CustomerId = Order.CustomerId where Customer.CustomerId = @custid", sqlParm)
                .FirstOrDefault();

How do I get the Orders in co.Orders to be populated with the above command, it seems like I can’t use the Include statement with SqlQuery. This is a very simplified example for illustrative purposes only, the actual queries will be more involved.

Answer 1

This is not possible at all. Direct SQL execution doesn’t offer filling of navigation properties and you really can’t use Include. You must execute two separate SQL queries to get Cutomer and her Orders.