Copying from EntityCollection to EntityCollection impossible?

Question

How would you do this (pseudo code): product1.Orders.AddRange(product2.Orders);

However, the function \"AddRange\" does not exist, so how would you copy all items in the

Answer 1

Based on the previous two answers, I came up with the following working solution:

public static void AddRange(this EntityCollection destinationEntityCollection,
                                       EntityCollection sourceEntityCollection) where T : class  
    {
        var array = new T[sourceEntityCollection.Count()];

        sourceEntityCollection.CopyTo(array,0);


        foreach (var entity in array)
        {
            destinationEntityCollection.Add(entity);
        }
    }