Return number of matches from c# dictionary

Question

I have a dictionary with non unique values and I want to count the matches of a string versus the values.

Basically I now do dict.ContainsValue(a) to get a bool telling me if the string a exists in dict, but I want to know not only if it exists but how many times it exists (and maybee even get a list of the keys it exists bound to)

Is there a way to do this using dictionary, or should I look for a different collection?

/Rickard Haake

Answer 1

To get the number of instances of the value you could do something like this:

dict.Values.Count(v => v == a);

To find the keys that have this value you could do this:

dict.Where(kv => kv.Value == a).Select(kv => kv.Key);