CountContainedWords

using System;
using System.IO;
using System.Collections.Generic;

//Write a program that reads a list of words from a file words.txt
//and finds how many times each of the words is contained in another file test.txt.
//The result should be written in the file result.txt and
//the words should be sorted by the number of their occurrences in descending order.
//Handle all possible exceptions in your methods.

class CountContainedWords
{
    private static void CountWord(IDictionary<string,int> dictionary, string line)
    {
        string checkWord = "";
        for (int i = 0; i < line.Length; i++)
        {
            while (line[i] != ' ' && line[i] != ',' && line[i] != '.')
            {
                checkWord += line[i];
                i++;
            }
            foreach (string word in dictionary.Keys)
            {
                if (checkWord == word)
                {
                    dictionary[word]++;
                    break;
                }
            }
            checkWord = "";
        }
    }

    static void Main(string[] args)
    {
        StreamReader text = new StreamReader(@"..\..\test.txt");
        StreamReader words = new StreamReader(@"..\..\words.txt");
        StreamWriter result = new StreamWriter(@"..\..\result.txt");

        IDictionary<string, int> dictionary = new SortedDictionary<string, int>();

        using (words)
        {
            string line;
            while ((line = words.ReadLine()) != null)
            {
                dictionary.Add(line, 0);
            }
        }

        using (text)
        {
            using (result)
            {
                string line = words.ReadLine();
                while (line != null)
                {
                    CountWord(dictionary, line);
                    line = words.ReadLine();
                }

            }
        }

    }
}