MoCS.WebClient.Models.ValidationUtil.ValidateRequiredStringValue C# (CSharp) Method

        public static void ValidateRequiredStringValue(string value, string parameterName)
        {
            if (String.IsNullOrEmpty(value))
            {
                throw new ArgumentException(StringRequiredErrorMessage, parameterName);
            }
        }

        public bool ValidateUser(string userName, string password)
        {
            ValidationUtil.ValidateRequiredStringValue(userName, "userName");
            ValidationUtil.ValidateRequiredStringValue(password, "password");

            return(_provider.ValidateUser(userName, password));
        }