count a specifc word in a text file in C#

Question

If i got a text file

"dont run if you cant hide, or you will be broken in two strings, your a evil man"

and i want to count how many times the word you is in the text file, and put that value in to a int variable.

how do i go about doing somthing like that?

Answer 1

To say it with a Regex...

Console.WriteLine((new Regex(@"(?i)you")).Matches("dont run if you cant hide, or you will be broken in two strings, your a evil man").Count)

or if you need the word you as stand-alone

Console.WriteLine((new Regex(@"(?i)\byou\b")).Matches("dont run if you cant hide, or you will be broken in two strings, your a evil man").Count)

Edit: Replaced \s+you\s+ with (?i)\byou\b for the sake of correctness

Answer 2

string s = "dont run if you cant hide, or you will be broken in two strings, your a evil man";
var wordCounts = from w in s.Split(' ')
                 group w by w into g
                 select new { Word = g.Key, Count = g.Count() };

int youCount = wordCounts.Single(w => w.Word == "you").Count;
Console.WriteLine(youCount);

Ideally punctuation should be ignored. I'll let you handle a messy detail like that.