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Matching money

using System; using System.Collections.Generic; using System.Globalization; using System.Text; using System.Text.RegularExpressions; using System.Reflection; public class MainClass{    public static void Main(){         Regex moneyR = new Regex(@"\$(((\d{1,3},)+\d{3})|\d+)\.\d{2}");         string[] money = new string[] { "$0.99",                                          "$1099999.00",                                          "$10.25",                                          "$90,999.99",                                          "$1,990,999.99",                                          "$1,999999.99" };         foreach (string m in money){             Console.WriteLine(m);             Console.WriteLine(moneyR.IsMatch(m));         }    } } $0.99 True $1099999.00 True $10.25 True $90,999.99 True $1,990,999.99 True $1,999999.99 False