Validates the area code with regular expression

   

//Microsoft Public License (Ms-PL)
//http://c4fdevkit.codeplex.com/license

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

namespace C4F.DevKit.WebServices
{
    /// <summary>
    /// Provides useful methods like conversion methods.
    /// </summary>
    public static class Utility
    {

        /// <summary>
        /// Validates the area code
        /// </summary>
        /// <param name="areaCode">Area code to be validated. Area code should not start with a 0 or a 1.</param>
        /// <returns>True, if area code is valid</returns>
        public static bool ValidateAreaCode(string areaCode)
        {
            if (String.IsNullOrEmpty(areaCode))
                return false;

            return Regex.IsMatch(areaCode, "^[^01][0-9]{2}$");
        }
    }
}

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Validates the area code with regular expression : Match « Regular Expressions « C# / C Sharp

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