[SerializableAttribute()] 
public class SaveMethodCombo 

class MyPage : System.Web.UI.Page
{
    public SaveMethodComboCollection SaveMethodCombos()
    {
        SaveMethodComboCollection newSaveMethodComboColl = new SaveMethodComboCollection();
        foreach (ProductDBField productDBField in Enum.GetValues(typeof(ProductDBField)))
        {
            SaveMethodCombo newSaveMethodCombo = new SaveMethodCombo();
            newSaveMethodCombo.ProductDBField = productDBField;
            newSaveMethodCombo.UpdateType = UpdateType.VariantDependent;
            newSaveMethodComboColl.Add(newSaveMethodCombo);
        }
        return newSaveMethodComboColl;
    }
}