using System;

using System.Text.RegularExpressions;

​

​

void Parse(string input)

{

    Console.WriteLine(input);

    var match = Regex.Match(input, @"(?<first>[^\d]+)\s+(?<last>\d+)");

    if (match.Success)

    {

        var varname = new[] { match.Groups[1].Value, match.Groups[2].Value };

        Console.WriteLine("varname[0] = '{0}'", varname[0]);

        Console.WriteLine("varname[1] = '{0}'", varname[1]);

    }

    else {

        Console.WriteLine("no match");

    }

}

​

​

Parse("I am 20");

Parse("Hi! am 20");

​

​