multiple keys for one value dictionary using c#

Question

multiple keys for one value in c# dictionary.I want to form one dictionary i tried with this code for form dictionary

 var dictionary = e.Args.Select(a => a.Split(new[] { '=' }, 2))
                    .GroupBy(a => a[0], a => a.Length == 2 ? a[1] : null)
                    .ToDictionary(g => g.Key, g => g.FirstOrDefault());

Then how can i form dictionary that have multiple key for one value using c#.

I wrote an answer for C# 7.0 here: https://stackoverflow.com/a/46829428/531524 — Hüseyin Yağlı, Oct 19 '17 at 12:16

score 0 · Answer 1 · edited Jun 20 '20 at 09:12

0

Use a Lookup (.NET 3.5 and above) from MSDN

Lookup(Of TKey, TElement)

Represents a collection of keys each mapped to one or more values.

By the way, if all your keys are contiguous (ie 1, 2, 3, ...), use a simple array.

Referred from here and here

edited Jun 20 '20 at 09:12

Community

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answered Mar 04 '14 at 04:58

Ramesh Rajendran

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If am correct then Lookup is other way around, it consists of unique key with number of values. – Sriram Sakthivel Mar 04 '14 at 05:01

multiple keys for one value dictionary using c#

1 Answers1