C# Determine Duplicate in List [duplicate]

Answer 1

Something along these lines is relatively simple and will provide you with a count of duplicates.

var something = new List() { "One", "One", "Two", "Three" };

var dictionary = new Dictionary();

something.ForEach(s =>
    {
        if (dictionary.ContainsKey(s))
        {
            dictionary[s]++;
        }
        else
        {
            dictionary[s] = 1;
        }
    });

I imagine this is similar to the implementation of Distinct, although I'm not certain.