c# - How to add unique words and their number of occurrences in a List -

i trying write program in c# read text file , count number of times each unique word shows , keeps track of words in file. example, in string "this text , it" get:

this - 2 - 2 - 1 text - 1 , - 1 - 1

is there easy way accomplish this? new c# , have not seen many things understand searching this.

edit:

so here code have tried. seems list returned has last word in file on , on , count off. though try rid of capitals , periods, still show up.

public override list<wordentry> getwordcount() {         list<wordentry> words = new list<wordentry>();         wordentry wordentry = new wordentry();         string[] tokens = null;         string line, temp;         int count = 0, index = 0;          while ((line = input.readline()) != null)         {             temp = regex.replace(line, @"\([0-9].\)", "");             temp.tolower();             tokens = temp.split(null);              (int = 0; < tokens.length; i++)             {                 wordentry.word = tokens[i];                 foreach (var word in tokens)                 {                     if (word == tokens[i])                         count++;                 }//end foreach                 wordentry.wordcount = count;                 words.add(wordentry);             }//end         }//end while          return words; }//end getwordcount 

the first step streamreader class...the streamreader class used read text file...then split each line of text file string[]...after have gotten far ..you can loop thru string[] foreach loop , count number of time word in array.