Question

Here is my problem with simplified example.

I have two entities modeled from SQL Server database:

1. Orders (columns available = OrderID, PackageCount,ManufactureDate, ShipDate, StatusID) Primary Key = OrderID)
2. OrderRecipients (columns available = RecipientID, FirstName, LastName, Address, City, Zip, Country, OrderID; Foreign Key = OrderID)

There is a [1 to many] relationship between Orders and OrderRecipients. One order can have several recipients.

I’m trying to extract the recipients of orders via the following code.

  var allmyrecipients = from o in mycontext.Orders
                        where (o.SiteID.Equals("NYC") || o.SiteID.Equals("SFO"))
                        select o.OrderRecipients;

However when I try to get the names of the recipients with the following code:

 foreach (var recipient in allmyrecipients)
 {
   Console.WriteLine(recipient.FirstName);
 }

the FirstName and other attributes of the recipient are not available in the Intellisense drop-down. I get “does not contain a definition of FirstName” error.

Why is this and what is the remedy? What am I doing wrong here? I’m working with VS 2010, Entity Framework 4.

Thank you for taking time to help.

Answer 1

EDIT: I refactored this into somthing that should work using SelectMany. Give this a shot:

var orders = from o in mycontext.Orders
    where (o.SiteID.Equals("NYC") || o.SiteID.Equals("SFO"))
    select o;

foreach (var recipient in orders.SelectMany(r => r.OrderRecipients)) 
{
    Console.WriteLine(recipient.FirstName); 
}