Question

How to match the first word after an expression in a string using RegEx with C#

Answer 1

using System;
using System.Text.RegularExpressions;

class MatchFirstWord
{
    static void Main()
    {
        string text = "The quick brown fox jumps over the lazy dog.";
        string expression = "fox";

        // Create the regex pattern: match 'expression' followed by whitespace and a word
        Regex regex = new Regex(expression + @"\s+(\w+)");
        Match match = regex.Match(text);

        if (match.Success) {
            string firstWord = match.Groups[1].Value;
            Console.WriteLine($"The first word after '{expression}' is: {firstWord}");
        }
        else {
            Console.WriteLine("No match found!");
        }
    }
}



/*
run:

The first word after 'fox' is: jumps

*/

 

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