Validace

 ValidationRules = new Dictionary<string, string>()
           {
              { "FirstName", @".{3,50}"},
              { "SecondName", @".{3,50}"},
              { "Email", @"^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$"},
                 { "Date", @"([0-3][0-9])\. (0[0-9]|1[0-2])\. ([0-9][0-9][0-9][0-9])"},
                 { "City", @".{2,100}"},
                 { "Passwd", @"^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)[a-zA-Z\d]{8,}$"}
            };


/// <summary>
        ///    validacni funkce
        /// </summary>
        /// <param name="value"></param>
        /// <param name="validationRule"></param>
        /// <returns>return true - if is valid</returns>
        public static bool Validate(string value, string validationRule)
        {
            Regex rgx = new Regex(validationRule);
            return rgx.IsMatch(value);
        }