private void RefreshAllCartridges()
{
// Creates a list of groups of cartridges.
AlphaGroupedCartridges = AlphaKeyGroup <CartridgeTag> .CreateGroups(Model.CartridgeStore.ToArray(), System.Globalization.CultureInfo.CurrentUICulture, ct => AlphaKeyGroup <CartridgeTag> .GetFirstAlphaNumChar(ct.Title), true);
}