Merge files with API

/// <summary>
        /// Simple merge sample.
        /// Takes the files found in the source folder and merge them into the file targetFile.
        /// </summary>
        /// <param name="sourceFolder">Source folder for the source files to be merged</param>
        /// <param name="targetFile">File name and path for the merged file</param>
        static void MergeFiles(string sourceFolder, string targetFile)
        {
            Console.WriteLine($"Merging documents in {sourceFolder}");
            DocumentConverterServiceClient client = null;
            try
            {
                // Create the folder for the merged file based on the target file name
                string targetFolder = Path.GetDirectoryName(targetFile);
                if (!Directory.Exists(targetFolder))
                {
                    Directory.CreateDirectory(targetFolder);
                }

                // ** Open the service and configure the bindings
                client = OpenService(ServiceURL);

                // Processing options
                ProcessingOptions processingOptions = new ProcessingOptions();

                // ** Specify the minimum level of merge settings
                MergeSettings mergeSettings = new MergeSettings();
                mergeSettings.BreakOnError = false;
                processingOptions.MergeSettings = mergeSettings;

                //** Set the absolute minimum open options

                // ** Get the files to merge
                string[] files = Directory.GetFiles(sourceFolder);
                List<SourceFile> sourceFiles = new List<SourceFile>();
                foreach (string file in files)
                {
                    OpenOptions openOptions = new OpenOptions();
                    openOptions.OriginalFileName = Path.GetFileName(file);
                    openOptions.FileExtension = Path.GetExtension(file);

                    // ** Set the absolute minimum conversion settings.
                    ConversionSettings conversionSettings = new ConversionSettings();
                    conversionSettings.Fidelity = ConversionFidelities.Full;
                    conversionSettings.Quality = ConversionQuality.OptimizeForPrint;

                    // Minimum merge settings
                    FileMergeSettings fileMergeSettings = new FileMergeSettings();
                    fileMergeSettings.TopLevelBookmark = openOptions.OriginalFileName;

                    byte[] sourceFileContent = File.ReadAllBytes(file);
                    SourceFile sourceFile = new SourceFile();
                    sourceFile.OpenOptions = openOptions;
                    sourceFile.ConversionSettings = conversionSettings;
                    sourceFile.MergeSettings = fileMergeSettings;
                    sourceFile.File = sourceFileContent;
                    sourceFiles.Add(sourceFile);

                }
                // ** Assign source files
                processingOptions.SourceFiles = sourceFiles.ToArray();


                // ** Carry out the conversion.
                BatchResults results = client.ProcessBatch(processingOptions);
                // ** Read the results of the merged file.
                byte[] mergedFile = results.Results[0].File;


                using (FileStream fs = File.Create(targetFile))
                {
                    fs.Write(mergedFile, 0, mergedFile.Length);
                    fs.Close();
                }


                Console.WriteLine("File converted to " + targetFile);
            }
            catch (FaultException<WebServiceFaultException> ex)
            {
                Console.WriteLine($"FaultException occurred: ExceptionType: {ex.Detail.ExceptionType.ToString()}");
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
            finally
            {
                if (client != null)
                {
                    CloseService(client);

                }
            }

        }

/// <summary>
        /// Perform Smart Redaction on the supplied file, writing the result into the target folder
        /// </summary>
        /// <param name="ServiceURL">URL endpoint for the PDF Converter service</param>
        /// <param name="sourceFileName">Source filename</param>
        /// <param name="targetFolder">Target folder to receive the output file</param>
        static void SmartRedaction(string ServiceURL, string sourceFileName, string targetFolder)
        {
            DocumentConverterServiceClient client = null;
            try
            {
                // Create minimum OpenOptions object
                OpenOptions openOptions = new OpenOptions();
                openOptions.OriginalFileName = Path.GetFileName(sourceFileName);

                // Create minimum SmartRedactionSettings
                SmartRedactionSettings smartRedactionSettings = new SmartRedactionSettings();
                smartRedactionSettings = new SmartRedactionSettings();
                // Set what needs to be redacted
                smartRedactionSettings.RedactCreditCardNumbers = BooleanEnum.True;
                smartRedactionSettings.RedactEmailAddresses = BooleanEnum.True;
                smartRedactionSettings.RedactPhoneNumbers = BooleanEnum.True;

                // Create target folder if required
                if (!Directory.Exists(targetFolder))
                {
                    Directory.CreateDirectory(targetFolder);
                }
                // ** Read the source file into a byte array.
                byte[] sourceFile = File.ReadAllBytes(sourceFileName);

                // ** Open the service and configure the bindings
                client = OpenService(ServiceURL);


                // ** Carry out the conversion.
                byte[] result = client.SmartRedaction(sourceFile, openOptions, smartRedactionSettings);

                // ** Save the results
                if (result != null)
                {
                    if (!Directory.Exists(targetFolder))
                    {
                        Directory.CreateDirectory(targetFolder);
                    }
                    string filename = Path.GetFileNameWithoutExtension(sourceFileName);
                    string destinationFileName = Path.GetFullPath(Path.Combine(targetFolder, filename + "-redacted.pdf"));
                    using (FileStream fs = File.Create(destinationFileName))
                    {
                        fs.Write(result, 0, result.Length);
                        fs.Close();
                    }
                    Console.WriteLine("File converted to " + destinationFileName);
                }


                else
                {
                    Console.WriteLine("Nothing returned");
                }
            }
            catch (FaultException<WebServiceFaultException> ex)
            {
                Console.WriteLine($"FaultException occurred: ExceptionType: {ex.Detail.ExceptionType.ToString()}");
                Console.WriteLine();
                Console.WriteLine($"Error Detail: {string.Join(Environment.NewLine, ex.Detail.ExceptionDetails)}");
                Console.WriteLine($"Error message: {ex.Message}");
                Console.WriteLine();
                Console.WriteLine($"Error reason: {ex.Reason}");
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.WriteLine(ex.StackTrace);
                Console.WriteLine(ex.Data.ToString());
            }
            finally
            {
                if (client != null)
                {
                    CloseService(client);

                }
            }

        }