Where to put static data in wpf?

Question

I am new to WPF. I'm trying to write a program that makes use of the MVVM design pattern.

My program has a list of countries that are fetched from the database on startup, and are static after that. Where is the place to put these? At the moment, I have them sitting at the top level of my ViewModel class hierarchy:

abstract class AbstractViewModel { static Jurisdiction[] jurisdictionOptions; public Jurisdiction[] JurisdictionOptions { get { if (jurisdictionOptions == null) { using (var db = new DatabaseContext()) { jurisdictionOptions = db.Jurisdictions.ToArray(); } } return jurisdictionOptions; } } }

I can then set the ItemSource of UIElements to JurisdictionOptions.

Is this the correct way of implenting this?

Klaus78 · Accepted Answer · 2012-04-16 12:06:59Z

4

If you are implementing the MVVM pattern you should also have a model class.

In general you should put your database code inside the model.

answered Apr 16, 2012 at 12:06

Klaus78

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1 Comment

Oliver Over a year ago

Jurisdiction is a model class. I'm using the entity framework to provide datadase access, and I didn't want to load the model classes it uses with too many extra methods. Maybe I need to introduce a new layer of classes between the entity framework classes and my viewmodels.

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