Check Zip and postal codes (or whatever) based on ISO values and regular expressions

ZipCodeValidator

 /// <summary>
    /// Validate zip code value
    /// using ISO country code.
    /// </summary>
    public class ZipCodeValidator
    {
        private Dictionary<string, string> countryList;

        public Dictionary<string, string> CountryList
        {
            get { return this.countryList; }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ZipCodeValidator" /> class.
        /// </summary>
        public ZipCodeValidator()
        {
            this.countryList = new Dictionary<string, string>();
            this.InitCountryList();
        }


        /// <summary>
        /// Checks the zip code.
        /// </summary>
        /// <param name="countryCode">The country code.</param>
        /// <param name="zipCode">The zip code.</param>
        /// <returns></returns>
        public bool CheckZipCode(string countryCode, string zipCode)
        {
            if (countryCode.Length > 2 || countryCode.Length < 1 || !this.countryList.ContainsKey(countryCode.ToUpper()))
            {
                throw new ArgumentException("Country Code not valid.", "countryCode");
            }

            var matches = Regex.Matches(zipCode, this.countryList[countryCode.ToUpper()]);

            if (matches.Count > 1 || matches.Count == 0)
            {
                return false;
            }
            else if(matches.Count == 1)
            {
                if (matches[0].Length < zipCode.Trim().Length)
                {
                    return false;
                }
            }
            

            return true;
        }

        /// <summary>
        /// Inits the country list.
        /// </summary>
        private void InitCountryList()
        {
            #region CountryList
            this.countryList.Add("AD", @"AD\d{3}");
            this.countryList.Add("AM", @"(37)?\d{4}");
            this.countryList.Add("AR", @"([A-HJ-NP-Z])?\d{4}([A-Z]{3})?");
            this.countryList.Add("AS", @"96799");
            this.countryList.Add("AT", @"\d{4}");
            this.countryList.Add("AU", @"\d{4}");
            this.countryList.Add("AX", @"22\d{3}");
            this.countryList.Add("AZ", @"\d{4}");
            this.countryList.Add("BA", @"\d{5}");
            this.countryList.Add("BB", @"(BB\d{5})?");
            this.countryList.Add("BD", @"\d{4}");
            this.countryList.Add("BE", @"\d{4}");
            this.countryList.Add("BG", @"\d{4}");
            this.countryList.Add("BH", @"(1[0-2]|[2-9])\d{2})?");
            this.countryList.Add("BM", @"[A-Z]{2}[ ]?[A-Z0-9]{2}");
            this.countryList.Add("BN", @"[A-Z]{2}[ ]?\d{4}");
            this.countryList.Add("BR", @"\d{5}[\-]?\d{3}");
            this.countryList.Add("BY", @"\d{6}");
            this.countryList.Add("CA", @"[ABCEGHJKLMNPRSTVXY]\d[ABCEGHJ-NPRSTV-Z][ ]?\d[ABCEGHJ-NPRSTV-Z]\d");
            this.countryList.Add("CC", @"6799");
            this.countryList.Add("CH", @"\d{4}");
            this.countryList.Add("CK", @"\d{4}");
            this.countryList.Add("CL", @"\d{7}");
            this.countryList.Add("CN", @"\d{6}");
            this.countryList.Add("CR", @"\d{4,5}|\d{3}-\d{4}");
            this.countryList.Add("CS", @"\d{5}");
            this.countryList.Add("CV", @"\d{4}");
            this.countryList.Add("CX", @"6798");
            this.countryList.Add("CY", @"\d{4}");
            this.countryList.Add("CZ", @"\d{3}[ ]?\d{2}");
            this.countryList.Add("DE", @"\d{5}");
            this.countryList.Add("DK", @"\d{4}");
            this.countryList.Add("DO", @"\d{5}");
            this.countryList.Add("DZ", @"\d{5}");
            this.countryList.Add("EC", @"([A-Z]\d{4}[A-Z]|(?:[A-Z]{2})?\d{6})?");
            this.countryList.Add("EE", @"\d{5}");
            this.countryList.Add("EG", @"\d{5}");
            this.countryList.Add("ES", @"\d{5}");
            this.countryList.Add("ET", @"\d{4}");
            this.countryList.Add("FI", @"\d{5}");
            this.countryList.Add("FK", @"FIQQ 1ZZ");
            this.countryList.Add("FM", @"(9694[1-4])([ \-]\d{4})?");
            this.countryList.Add("FO", @"\d{3}");
            this.countryList.Add("FR", @"\d{2}[ ]?\d{3}");
            this.countryList.Add("GB", @"GIR[ ]?0AA|(AB|AL|B|BA|BB|BD|BH|BL|BN|BR|BS|BT|CA|CB|CF|CH|CM|CO|CR|CT|CV|CW|DA|DD|DE|DG|DH|DL|DN|DT|DY|E|EC|EH|EN|EX|FK|FY|G|GL|GY|GU|HA|HD|HG|HP|HR|HS|HU|HX|IG|IM|IP|IV|JE|KA|KT|KW|KY|L|LA|LD|LE|LL|LN|LS|LU|M|ME|MK|ML|N|NE|NG|NN|NP|NR|NW|OL|OX|PA|PE|PH|PL|PO|PR|RG|RH|RM|S|SA|SE|SG|SK|SL|SM|SN|SO|SP|SR|SS|ST|SW|SY|TA|TD|TF|TN|TQ|TR|TS|TW|UB|W|WA|WC|WD|WF|WN|WR|WS|WV|YO|ZE)(\d[\dA-Z]?[ ]?\d[ABD-HJLN-UW-Z]{2})|BFPO[ ]?\d{1,4}");
            this.countryList.Add("GE", @"\d{4}");
            this.countryList.Add("GF", @"9[78]3\d{2}");
            this.countryList.Add("GG", @"GY\d[\dA-Z]?[ ]?\d[ABD-HJLN-UW-Z]{2}");
            this.countryList.Add("GL", @"39\d{2}");
            this.countryList.Add("GN", @"\d{3}");
            this.countryList.Add("GP", @"9[78][01]\d{2}");
            this.countryList.Add("GR", @"\d{3}[ ]?\d{2}");
            this.countryList.Add("GS", @"SIQQ 1ZZ");
            this.countryList.Add("GT", @"\d{5}");
            this.countryList.Add("GU", @"969[123]\d([ \-]\d{4})?");
            this.countryList.Add("GW", @"\d{4}");
            this.countryList.Add("HM", @"\d{4}");
            this.countryList.Add("HN", @"(?:\d{5})?");
            this.countryList.Add("HR", @"\d{5}");
            this.countryList.Add("HT", @"\d{4}");
            this.countryList.Add("HU", @"\d{4}");
            this.countryList.Add("ID", @"\d{5}");
            this.countryList.Add("IL", @"\d{5}");
            this.countryList.Add("IM", @"IM\d[\dA-Z]?[ ]?\d[ABD-HJLN-UW-Z]{2}");
            this.countryList.Add("IN", @"\d{6}");
            this.countryList.Add("IO", @"BBND 1ZZ");
            this.countryList.Add("IQ", @"\d{5}");
            this.countryList.Add("IS", @"\d{3}");
            this.countryList.Add("IT", @"\d{5}");
            this.countryList.Add("JE", @"JE\d[\dA-Z]?[ ]?\d[ABD-HJLN-UW-Z]{2}");
            this.countryList.Add("JO", @"\d{5}");
            this.countryList.Add("JP", @"\d{3}-\d{4}");
            this.countryList.Add("KE", @"\d{5}");
            this.countryList.Add("KG", @"\d{6}");
            this.countryList.Add("KH", @"\d{5}");
            this.countryList.Add("KR", @"\d{3}[\-]\d{3}");
            this.countryList.Add("KW", @"\d{5}");
            this.countryList.Add("KZ", @"\d{6}");
            this.countryList.Add("LA", @"\d{5}");
            this.countryList.Add("LB", @"(\d{4}([ ]?\d{4})?)?");
            this.countryList.Add("LI", @"(948[5-9])|(949[0-7])");
            this.countryList.Add("LK", @"\d{5}");
            this.countryList.Add("LR", @"\d{4}");
            this.countryList.Add("LS", @"\d{3}");
            this.countryList.Add("LT", @"\d{5}");
            this.countryList.Add("LU", @"\d{4}");
            this.countryList.Add("LV", @"\d{4}");
            this.countryList.Add("MA", @"\d{5}");
            this.countryList.Add("MC", @"980\d{2}");
            this.countryList.Add("MD", @"\d{4}");
            this.countryList.Add("ME", @"8\d{4}");
            this.countryList.Add("MG", @"\d{3}");
            this.countryList.Add("MH", @"969[67]\d([ \-]\d{4})?");
            this.countryList.Add("MK", @"\d{4}");
            this.countryList.Add("MN", @"\d{6}");
            this.countryList.Add("MP", @"9695[012]([ \-]\d{4})?");
            this.countryList.Add("MQ", @"9[78]2\d{2}");
            this.countryList.Add("MT", @"[A-Z]{3}[ ]?\d{2,4}");
            this.countryList.Add("MU", @"(\d{3}[A-Z]{2}\d{3})?");
            this.countryList.Add("MV", @"\d{5}");
            this.countryList.Add("MX", @"\d{5}");
            this.countryList.Add("MY", @"\d{5}");
            this.countryList.Add("NC", @"988\d{2}");
            this.countryList.Add("NE", @"\d{4}");
            this.countryList.Add("NF", @"2899");
            this.countryList.Add("NG", @"(\d{6})?");
            this.countryList.Add("NI", @"(\d{4}-)?\d{3}-\d{3}(-\d{1})?)?");
            this.countryList.Add("NL", @"\d{4}[ ]?[A-Z]{2}");
            this.countryList.Add("NO", @"\d{4}");
            this.countryList.Add("NP", @"\d{5}");
            this.countryList.Add("NZ", @"\d{4}");
            this.countryList.Add("OM", @"(PC )?\d{3}");
            this.countryList.Add("PF", @"987\d{2}");
            this.countryList.Add("PG", @"\d{3}");
            this.countryList.Add("PH", @"\d{4}");
            this.countryList.Add("PK", @"\d{5}");
            this.countryList.Add("PL", @"\d{2}-\d{3}");
            this.countryList.Add("PM", @"9[78]5\d{2}");
            this.countryList.Add("PN", @"PCRN 1ZZ");
            this.countryList.Add("PR", @"00[679]\d{2}([ \-]\d{4})?");
            this.countryList.Add("PT", @"\d{4}([\-]\d{3})?");
            this.countryList.Add("PW", @"96940");
            this.countryList.Add("PY", @"\d{4}");
            this.countryList.Add("RE", @"9[78]4\d{2}");
            this.countryList.Add("RO", @"\d{6}");
            this.countryList.Add("RS", @"\d{6}");
            this.countryList.Add("RU", @"\d{6}");
            this.countryList.Add("SA", @"\d{5}");
            this.countryList.Add("SE", @"\d{3}[ ]?\d{2}");
            this.countryList.Add("SG", @"\d{6}");
            this.countryList.Add("SH", @"(ASCN|STHL) 1ZZ");
            this.countryList.Add("SI", @"\d{4}");
            this.countryList.Add("SJ", @"\d{4}");
            this.countryList.Add("SK", @"\d{3}[ ]?\d{2}");
            this.countryList.Add("SM", @"4789\d");
            this.countryList.Add("SN", @"\d{5}");
            this.countryList.Add("SO", @"\d{5}");
            this.countryList.Add("SZ", @"[HLMS]\d{3}");
            this.countryList.Add("TC", @"TKCA 1ZZ");
            this.countryList.Add("TH", @"\d{5}");
            this.countryList.Add("TJ", @"\d{6}");
            this.countryList.Add("TM", @"\d{6}");
            this.countryList.Add("TN", @"\d{4}");
            this.countryList.Add("TR", @"\d{5}");
            this.countryList.Add("TW", @"\d{3}(\d{2})?");
            this.countryList.Add("UA", @"\d{5}");
            this.countryList.Add("US", @"\d{5}([ \-]\d{4})?");
            this.countryList.Add("UY", @"\d{5}");
            this.countryList.Add("UZ", @"\d{6}");
            this.countryList.Add("VA", @"00120");
            this.countryList.Add("VE", @"\d{4}");
            this.countryList.Add("VI", @"008([0-4]\d)|(5[01]))([ \-]\d{4})?");
            this.countryList.Add("WF", @"986\d{2}");
            this.countryList.Add("XK", @"\d{5}");
            this.countryList.Add("YT", @"976\d{2}");
            this.countryList.Add("YU", @"\d{5}");
            this.countryList.Add("ZA", @"\d{4}");
            this.countryList.Add("ZM", @"\d{5}"); 
            #endregion
        }


    }