how to use dictionary two way in c# -

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public static dictionary<int, string> dic = new dictionary<int, string>() {              {1,"anystring1"},             {2,"anystring2"}};

i need use this

string str= dic[1]; // possible  int a=dic["anystring1"]; // dream

that not dictionary meant do. can think of definition , instantly find matching word in favorite dictionary in o(1) time? if want class type of functionality (a bidirectional dictionary) have build (or google 1 of many implementations on internet).


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