/// <summary>
        /// Validates that the parameter is not equal to <paramref name="value" />. Otherwise, an <see cref="ArgumentException" /> is thrown.
        /// </summary>
        /// <param name="validator">The <see cref="ParameterValidator{TParameter}" />.</param>
        /// <param name="value">The value the parameter must not be equal to.</param>
        /// <param name="ignoreCase">Whether or not to ignore case.</param>
        /// <returns>The same instance of <see cref="ParameterValidator{TParameter}" />.</returns>
        /// <exception cref="System.ArgumentException">Thrown when parameter is equal to <paramref name="value" />.</exception>
        public static ParameterValidator <string> IsNotEqualTo(this ParameterValidator <string> validator, string value, bool ignoreCase)
        {
            if (value != null)
            {
                string exceptionMessage = string.Format(ExceptionMessages.VALUE_MUST_NOT_BE_EQUAL_TO, value);

                return(validator.IsNotEqualTo(value, ignoreCase, exceptionMessage));
            }

            return(validator);
        }