求助 ToLookup

[spmzfz]

我想将IEnumerable <IGrouping<string,string >> 转换为 ToLookup
,这样可方便的对指定键的组进行访问
假设变量V为IEnumerable <IGrouping<string,string >>，
(Lookup<string, string>) result = (Lookup<string, string>)V.ToLookup(p => p.Key); //wrong
头痛！。。。

[hez2010]

用 ToDictionary() 试试？

[threenewbee]

(Lookup<string, IGrouping<string,string >>) result = (Lookup<string, IGrouping<string,string >>)V.ToLookup(p => p.Key);