private void GenericScoreEditor_Load(object sender, EventArgs e)
        {
            // rule action
            colAction.DataSource    = EnumManager.ReadRuleAction();
            colAction.ValueMember   = "ID";
            colAction.DisplayMember = "NAME";

            colOperator.DataSource    = EnumManager.ReadOperation();
            colOperator.ValueMember   = "ID";
            colOperator.DisplayMember = "NAME";

            cbxBetweenElements.DataSource    = EnumManager.ReadBetweenElements();
            cbxBetweenElements.ValueMember   = "ID";
            cbxBetweenElements.DisplayMember = "NAME";
        }