Combine Aggregate Exception

        string CombineAggregateException(AggregateException exception)
        {
            string message = exception.Message;
            for (int i = 0; i < exception.InnerExceptions.Count; i++)
                message += Environment.NewLine + string.Format("{0:N0}: {1}", i + 1, exception.InnerExceptions[i].Message);
            return message;
        }