<converters:OneEnumEqualsToBoolConverter x:Key="MultiEnumsEqualsToBoolConverter">
        <converters:OneEnumEqualsToBoolConverter.Enums>
            <simple:QcRuleOperator>CANNOT_BE_CALCULATED</simple:QcRuleOperator>
            <simple:QcRuleOperator>CAN_BE_CALCULATED</simple:QcRuleOperator>
        </converters:OneEnumEqualsToBoolConverter.Enums>
</converters:OneEnumEqualsToBoolConverter>

Visible="{Binding ValueOperator, Converter={StaticResource MultiEnumsEqualsToBoolConverter},ConverterParameter=false}"