Here's how I decided to do it:
Instead of using an Order field, I use the following code in the
MoveUp and MoveDown methods:
public void MoveDown(CarPref carPref)
{
CarPref carCopy = new CarPref(carPref.Model, carPref.Make);
List.Insert(List.IndexOf(carPref)+2, carCopy );
List.Remove(carPref);
}
public void MoveUp(CarPref carPref)
{
CarPref carCopy = new CarPref(carPref.Model, carPref.Make);
List.Insert(List.IndexOf(carPref)-1, carCopy );
List.Remove(carPref);
}
I haven't tested it yet, but it looks like it'll work. I'll report
back once I have it running, just in case anyone else is interested.
--- In padnug@xxxxxxxxxxxxxxx, "Keith R. Pinster" <dimondwoof@xxxx>
wrote:
> I've got an object that has a set of sub-objects. I want to be
able to
> retrieve the sub-objects in a certain order. Is there a way to
change
> the index of the sub-objects?
>
> E.G:
> Favorites:
> Cars:
> 1. Corvette
> 2. Nova
> 3. Firebird
>
> User wants to change the order so that it reads:
> 1. Corvette
> 2. Firebird
> 3. Nova
>
> Currently I'm tracking the order with an Order int field, but this
> seems really messy and error prone. Any ideas?
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