Question

For example, I have this string “This is a trial string”, and I know that I want the word which is at position 2 (in this case, the word “This”). The letter at index 2 of the whole string is part of the word “This”, so I want to get that word. In case I supply the index of a separator, then I wouldn´t get any specific word, just the separator.

How can do this? I found this link, but it shows how to get everything AFTER a certain index, I need the word AT a certain index.

Answer 1

You could make an extension method that checks for spaces:

Call like this: string theWord = myString.GetWordAtPosition(18);

    static class WordFinder
    {
        public static string GetWordAtPosition(this string text, int position)
        {
            if (text.Length - 1 < position || text[position] == ' ') return null;

            int start = position;
            int end = position;
            while (text[start] != ' ' && start > 0) start--;
            while (text[end] != ' ' && end < text.Length - 1) end++;

            return text.Substring(start == 0 ? 0 : start + 1, end - start - 1);

        }
    }