c# - Is there a built in type for a lookup/reverse lookup table? -

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this question has answer here:

i'm trying implement baudot character encoding. right now, i'm using 2 dictionaries mirrors of each other:

dictionary<char, int> lookup = new dictionary<char, int> {     { ' ', 0x100100 },     { '-', 0x011000 },     { '/', 0x010111 },     { '0', 0x001101 },     { '1', 0x011101 },     ... };  dictionary<int, char> reverse = new dictionary<int, char> {     { 0x100100, ' ' },     { 0x011000, '-' },     { 0x010111, '/' },     { 0x001101, '0' },     { 0x011101, '1' },     ... };

is there built in type handles already? like:

var lookup = new lookup<int, char>(); lookup.getbykey(0x100100); lookup.getbyvalue('c');

i couldn't find when searched 'reverse lookup' or 'lookup table', seemed related dns or linqtosql.

(i'm using baudot because it's necessary cospas sarsat devices)

i think in need of bi-directional dictionary. there many such implementations available. 1 in link though :

http://blogs.microsoft.co.il/blogs/ranw/bdirectional.txt

the pre-requisite being key , value should not of same type, in case applies.


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