Remove Item in Dictionary based on Value

Question

I have a Dictionary.

I need to look within that dictionary to see if a value exists based on input from somewhere else and if it e

Answer 1

Here is a method you can use:

    public static void RemoveAllByValue(this Dictionary dictionary, V value)
    {
        foreach (var key in dictionary.Where(
                kvp => EqualityComparer.Default.Equals(kvp.Value, value)).
                Select(x => x.Key).ToArray())
            dictionary.Remove(key);
    }