Litle.Sdk.litleFile.AppendLineToFile C# (CSharp) Method

        public virtual string AppendLineToFile(string filePath, string lineToAppend)
        {
            using (var fs = new FileStream(filePath, FileMode.Append))
            using (var sw = new StreamWriter(fs))
            {
                sw.Write(lineToAppend);
            }

            return filePath;
        }

        public string Serialize()
        {
            string xmlHeader = "<?xml version='1.0' encoding='utf-8'?>\r\n<litleRequest version=\"9.3\"" +
                               " xmlns=\"http://www.litle.com/schema\" " +
                               "numBatchRequests=\"" + numOfLitleBatchRequest + "\">";

            string xmlFooter = "\r\n</litleRequest>";

            string filePath;

            finalFilePath = litleFile.createRandomFile(requestDirectory, Path.GetFileName(finalFilePath), ".xml", litleTime);
            filePath      = finalFilePath;

            litleFile.AppendLineToFile(finalFilePath, xmlHeader);
            litleFile.AppendLineToFile(finalFilePath, authentication.Serialize());

            if (batchFilePath != null)
            {
                litleFile.AppendFileToFile(finalFilePath, batchFilePath);
            }
            else
            {
                throw new LitleOnlineException("No batch was added to the LitleBatch!");
            }

            litleFile.AppendLineToFile(finalFilePath, xmlFooter);

            finalFilePath = null;

            return(filePath);
        }