public static string FromAtLeast(SpecialSection model)
        {
            string atleast = "";

            if (model.atLeastOne)
            {
                atleast = atleast = "(?=.*[$@!%*?&])";
            }

            return(atleast);
        }
        public static string FromAtLeast(SpecialSection model, bool isOk)
        {
            string atleast = "";

            if (model.atLeastOne)
            {
                atleast = atleast + "$@!%*?&";
            }

            return(atleast);
        }
        public static string FromSpecialCharacter(SpecialSection model)
        {
            string regexp = "";

            if (model.category == "All")
            {
                regexp = "$@!%*?&";
            }
            else if (model.category == "custom")
            {
                regexp = FromCustom(model.customText);
            }

            return(regexp);
        }