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    <p>Combining both vadz's answer and im_a_noob's answer, you should be able to read your words.txt file and put it into a dictionary.</p> <pre><code> Dictionary&lt;string, double&gt; wordDictionary = new Dictionary&lt;string, double&gt;(); using (FileStream fileStream = new FileStream(FILENAME, FileMode.Open, FileAccess.Read)) { using (StreamReader reader = new StreamReader(fileStream)) { int lineCount = 0; int skippedLine = 0; while( !reader.EndOfStream) { string[] fields = reader.ReadLine().Split('\t'); string word = fields[0]; double value = 0; lineCount++; //this check verifies there are two elements, tries to parse the second value and checks that the word //is not already in the dictionary if (fields.Count() == 2 &amp;&amp; double.TryParse(fields[1], out value) &amp;&amp; !wordDictionary.ContainsKey(word)) { wordDictionary.Add(word, value); } else{ skippedLine++; } } Console.WriteLine(string.Format("Total Lines Read: {0}", lineCount)); Console.WriteLine(string.Format("Lines Skipped: {0}", skippedLine)); Console.WriteLine(string.Format("Expected Entries in Dictonary: {0}", lineCount - skippedLine)); Console.WriteLine(string.Format("Actual Entries in Dictionary: {0}", wordDictionary.Count())); reader.Close(); } fileStream.Close(); } </code></pre> <p>To score the sentences you could use something like the following.</p> <pre><code> string fileText = File.ReadAllText(COMMENTSTEXT); //COMMENTSTEXT = comments.txt // assumes sentences end with a period, won't take into account any other periods in sentence var sentences = fileText.Split('.'); foreach( string sentence in sentences ) { double sentenceScore = 0; foreach (KeyValuePair&lt;string, double&gt; word in wordDictionary) { sentenceScore += sentence.Split(' ').Count(w =&gt; w == word.Key) * word.Value; } Console.WriteLine(string.Format("Sentence Score = {0}", sentenceScore)); } </code></pre>
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    1. POAssign certain score according to words
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    1. COJust want to ask how do you to test whether the word and values is stored in the wordDictionary property?
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    2. COdepends on how thorough you want to be and how long your words list is. You could trace out the entries after they have been added to see that it is working correctly, but that becomes difficult to see when you have a large number of entries. A better solution would be to have a counter of the number of lines read and a counter of number of lines skipped, then compare the difference of those to the count of elements in the dictionary.
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    3. COUpdated my answer to include simple checks on the lines read vs the entries in the dictionary
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