Create unique files in another directory

I am currently grabbing multiple .txt files from the directory I specified (sourceDirectory). I am generating new .csv files with the same name as the .txt files - one CSV file for each .txt file.

However, I want to generate these new files in a different directory I specified (directoryPath). If I run my program after creating these files in the source directory, however, if I run my program again, it will now generate files in the target directory.

Below is my code where I complete the above:

static void Main(string[] args)
    {
        string sourceDirectory = @"C:directoryWhereTXTFilesAre";

        var txtFiles = Directory.EnumerateFiles(sourceDirectory, "*.txt", SearchOption.AllDirectories);

        foreach (string currentFile in txtFiles)
        {
            readFile(currentFile);
        }

        string directoryPath = @"C:\destinationForCSVFiles"; 
    }

      

        
        
        
      

    

Then I create new .csv files based on the original .txt file like this:

static FileStream CreateFileWithUniqueName(string folder, string fileName, int maxAttempts = 1024)
        {
            var fileBase = Path.GetFileNameWithoutExtension(fileName);
            var ext = Path.GetExtension(fileName);

            // build hash set of filenames for performance
            var files = new HashSet<string> (Directory.GetFiles(folder));

            for (var index = 0; index < maxAttempts; index++)
            {
                // first try with the original filename, else try incrementally adding an index
                var name = (index == 0)
                    ? fileName
                    : String.Format("{0} ({1}){2}", fileBase, index, ext);

                // check if exists
                var fullPath = Path.Combine(folder, name);
                string CSVfileName = Path.ChangeExtension(fullPath, ".csv");
                if (files.Contains(CSVfileName))
                    continue;

                // try to create the file
                try
                {
                    return new FileStream(CSVfileName, FileMode.CreateNew, FileAccess.Write);
                }
                catch (DirectoryNotFoundException) { throw; }
                catch (DriveNotFoundException) { throw; }
                catch (IOException)
                {

                }
           }      

      

        
        
        
      

    

I don't understand why it creates the .csv files initially in the same directory as the .txt files, and then the second time I run my code it creates in the Path directory.

Output required: sourceDirectory is left as is with only .txt and directoryPath files to store .csv files.

The only other place I call CreateFileWithUniqueName is in my readFile method, the code is below:

     using (var stream = CreateFileWithUniqueName(@"C:destinationFilePath", currentFile))
                    {
                        Console.WriteLine("Created \"" + stream.Name + "\"");
                newFileName = stream.Name;
                Globals.CleanedFileName = newFileName;
    }