Question

The Title says everything..

Searched Google and Stackoverflow and didn’t find something similiar..

Answer 1

For .txt file you can use regexp \b\w+\b. It will match all occurrences of words, e.g.:

var count = Regex.Matches(input, @"\b\w+\b").Count;

To count letters:

int count = input.Count(char.IsLetter);