CODEWITHSUNDEEP
c#dictionary
imkindalost
imkindalost

Reputation: 9

C# Word Frequency using Dictionary

I need to find the word frequency of a text file using a dictionary, however I am having trouble creating the key and value for the dictionary.

        private void Form1_Load(object sender, EventArgs e)
    {
        StreamReader inputFile; //read the file 
        string words; //hold words from file
        int wordCount; //keep track of times words are repeated 

        //create dictionary 
        Dictionary<string, int> wordFrequency = new Dictionary<string, int>();

        //open file 
        inputFile = File.OpenText("Kennedy.txt");

        //read lines from file  
        while (!inputFile.EndOfStream)
        {
            words = inputFile.ReadLine();
            wordFrequency.Add(words, wordCount); //add elements to dictionary?

            //add words to list box
            lstboxwords.Items.Add(words); 
        }

Upvotes: 0

Views: 1749

Answers (1)

Neil
Neil

Reputation: 11889

You appear to be missing the part that splits the line into words.

You can do this with string.Split. Then you need to iterate over the words within each line, and then add each word to the dictionary.

In pseudo code:

line = inputFile.ReadLine(); // Read the whole line
words = line.Split(' '); // Split the line into words
foreach(var word in words)
{
   if(!wordFrequency.ContainsKey(word)) // Do we already know about this word?
   {  
       wordFrequency.Add(word, 0); // It's a new word
   }
   wordFrequency[word]++; // Increment the count for each word
}

Upvotes: 1

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