Mega Code Archive

 

Categories / C# / Development Class

 

Gets the group name that corresponds to the specified group number

using System; using System.Collections.Generic; using System.Text.RegularExpressions; public class Example {    public static void Main()    {       string pattern = @"(?<city>[A-Za-z\s]+), (?<state>[A-Za-z]{2}) (?<zip>\d{5}(-\d{4})?)";       string[] cityLines = {"New York, NY 10003"};       Regex rgx = new Regex(pattern);       List<string> names = new List<string>();       int ctr = 1;       bool exitFlag = false;       do {          string name = rgx.GroupNameFromNumber(ctr);          if (! String.IsNullOrEmpty(name))          {             ctr++;             names.Add(name);          }          else          {             exitFlag = true;          }       } while (! exitFlag);       foreach (string cityLine in cityLines)       {          Match match = rgx.Match(cityLine);          if (match.Success)             Console.WriteLine("Zip code {0} is in {1}, {2}.",                                 match.Groups[names[3]],                                 match.Groups[names[1]],                                 match.Groups[names[2]]);       }     } }