private void Initialise(NameValueCollection settings)
        {
            var editableCollection =
                new EditableKeyValueCollection(
                    settings.SelectMany(
                        key => settings.GetValues(key).Select(
                            value => new EditableKeyValue()
                                         {
                                             Key = key,
                                             Value = value,
                                         })));

            editableCollection.KeyValueChanged += delegate { OnChanged(EventArgs.Empty); };
            editableCollection.CollectionChanged += delegate { OnChanged(EventArgs.Empty); };

            EditableValues = editableCollection;
            AddEmptyItem();
        }