System.Attribute 排除重复值

Question

我有一个用 System.Attribute 类装饰的列表属性。是否可以在属性级别对列表进行检查以仅包含不同的值？

[ConfigSettingList(typeof(string),Description="Contains a list of supported handheld devices . Default is the below list .")]
        public List<string> HandHeldDevices
        {
            get
            {
                if (_handHeldDevices == null)
                {
                    _handHeldDevices = new List<string> { "Android", "webOS", "iPhone", "iPad", "iPod", "BlackBerry", "IEMobile", "Opera Mini" };
                }
                return _handHeldDevices;
            }
        }
        private List<string> _handHeldDevices;

ConfigSettingList 继承自 System.Attribute 。我想检查不同的值。

Answer 1

使用不允许重复元素的HashSet<T>。