Minuteman.Validation.ValidateString C# (CSharp) Method

        public static void ValidateString(
            string value,
            string message,
            string paramName)
        {
            if (string.IsNullOrWhiteSpace(value))
            {
                throw new ArgumentException(message, paramName);
            }
        }

        public CompositeUserActivityReport(
            int db,
            string key,
            string operation,
            UserActivityReport left,
            UserActivityReport right)
            : base(db, key)
        {
            Validation.ValidateString(
                operation,
                ErrorMessages.CompositeUserActivityReport_Constructor_Operation_Required,
                "operation");

            if (left == null)
            {
                throw new ArgumentNullException("left");
            }

            if (left == null)
            {
                throw new ArgumentNullException("left");
            }

            Operation = operation;
            Left      = left;
            Right     = right;
        }