Solution for challenge "Using Dictionaries"

using System.Collections.Generic;

namespace Treehouse.CodeChallenges
{
    public class LexicalAnalysis
    {
        public Dictionary<string, int> WordCount = new Dictionary<string, int>();

        public void AddWord(string word)
        {
            if (WordCount.ContainsKey(word))
            {
                WordCount[word]++;
            }
            else
            {
                WordCount.Add(word, 1);
            }
        }
        // Set the return type of the method to match the dictionary that will be returned
        public Dictionary<string, int> WordsWithCountGreaterThan (int num){
            // Create a new dictionary to hold the word with a count greater than num
            Dictionary<string, int> greaterWord = new Dictionary<string, int>();
            // loop though each item in the WordCount dictionary
            foreach (KeyValuePair<string,int> word in WordCount)
            {
                // Check if the value (count) of the word is greater than num
                if (word.Value > num)
                {
                    // Add the word and it's value to the new dictionary if the word's count is greater than num
                    greaterWord.Add(word.Key, word.Value);
                }
            }
            // Return the new dictionary
            return greaterWord;
        }
    }
}