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Maybe this is of interest: http://css-tricks.co...attern-edition/ the article also links to http://addyosmani.co...npatterns/book/

Thank you Daniel and Sephern. Factory seems to be the way to go. Currently experimenting a bit with it.

I'll rephrase.

I have an array of Things.

Each Thing has a Type and an Id property.

The Type property is a String.

I want to convert each Thing into its own class for ease of presentation.

Any ideas on how to go about that except using a huge switch statement?

public Thing[] things = new Thing[] {
    new Thing() { Type = "Color", Id = clr.Blue, Hex = #0000FF },
    new Thing() { Type = "Food", Id = food_Burger, Ingredients = new string[] { "Meat", "Lettuce", "Bread", "Ketchup"} }
}

List<Food> foods = new List<Food>();

foreach(var thing in things)
{
    if(thing.type.Equals("Food")
    {
       foods.add(thing);
    }
}

The Web service just started working. So the provider has done something.

Sephern, on 23 August 2012 - 01:18 PM, said:

Yes, they already exist so that's why I got the error. The problem was that I just wanted to create a many to many relationship between the new reservation and the department that already exists in the DB.


I worked around the problem by creating a "APIEntity" class that holds all the data I got from the web service.
When inserting a new Reservation, I create a new instance of the entity class Reservation and set some of the properties from the APIEntity class.
In the APIEntity class I also have IDs of the departments for the reservation.
So I get the Deparments from the database from those IDs and add it to the Reservation entity instance.
Then SaveChanges().