Removing a key/value pair from a ConcurrentDictionary given a value

Question

I have a concurrent dictionary with Ids as keys and tokens as values. There are instances where I will have an Id for which I want to remove tokens, and there are instances where I will have a specific token to remove. What could I call on the dictionary to find the pair with a specified value?

Tokens are unique to Ids.

Iterate through the collection and find the value, then try to remove the pair based on the key you found. — StingyJack, Oct 30 '15 at 19:40

score 5 · Accepted Answer · answered Oct 30 '15 at 19:50

5

What about searching the values and remove them in a loop?

var itemsToRemove = dictionary.Where(kvp => kvp.Value.Equals(token));
foreach (var item in itemsToRemove)
   dictionary.TryRemove(item.Key, out token);

answered Oct 30 '15 at 19:50

Bruno Leupi

116
4

Removing a key/value pair from a ConcurrentDictionary given a value

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