WindivertDotnet.IFilter内lambda表达式不可使用集合类型判断，否则报错

[zxcvbnm3057]

报错内容：“variable 'filter' of type 'WindivertDotnet.IFilter' referenced from scope '', but it is not defined”

定位原因：

        public WinDivert(Filter filter, WinDivertLayer layer, short priority = 0, WinDivertFlag flags = WinDivertFlag.None)
            : this(filter.ToString(), layer, priority, flags)
        {
        }

filter.ToString()无法将集合转换为字符串

解决办法：

手写循环，将是否在集合中或集合取键值判断转为windivert filter language形式。

我对c#并不熟悉，上述集合类型义为hashset，dictionary等，具体哪些不能用可以参考WindivertDotnet.Filter.FilterTranslator的实现