Match / NextMatch

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

namespace StringMagic
{
    class Program
    {
        static void Main(string[] args)
        {
            string longString = "<span>1</span><span>2</span><span>3</span>";
            Regex pattern = new Regex(@">(\d)<");

            var match = pattern.Match(longString);
            while (match.Value != "")
            {
                Console.WriteLine(match.Groups[1]);
                match = match.NextMatch();
            }
            Console.ReadKey();
        }
    }
}