E-Mail Address Verification in C# using Regular Expressions

static void Main(string[] args)
        {
            string patternForEMail = @"\b[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b";

            Regex rgx = new Regex(patternForEMail, RegexOptions.IgnoreCase);

            Console.Write("Enter the E-Mail Address: ");

            MatchCollection matches = rgx.Matches(Console.ReadLine());

            if (matches.Count > 0)
            {
                Console.WriteLine("Valid E-Mail...");
            }
            else
            {
                Console.WriteLine("In-Valid E-Mail...");
            }

            Console.Read();
        }