Does C# have built-in support for parsing page-number strings?

Question

Does C# have built-in support for parsing strings of page numbers? By page numbers, I mean the format you might enter into a print dialog that\'s a mixture of comma and das

Answer 1

Regex is not efficient as following code. String methods are more efficient than Regex and should be used when possible.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] inputs = {
                                 "001-005/015",
                                 "009/015"
                             };

            foreach (string input in inputs)
            {
                List numbers = new List();
                string[] strNums = input.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
                foreach (string strNum in strNums)
                {
                    if (strNum.Contains("-"))
                    {
                        int startNum = int.Parse(strNum.Substring(0, strNum.IndexOf("-")));
                        int endNum = int.Parse(strNum.Substring(strNum.IndexOf("-") + 1));
                        for (int i = startNum; i <= endNum; i++)
                        {
                            numbers.Add(i);
                        }
                    }
                    else
                        numbers.Add(int.Parse(strNum));
                }
                Console.WriteLine(string.Join(",", numbers.Select(x => x.ToString())));
            }
            Console.ReadLine();

        }
    }
}