public void UploadFiles(Configuration config, string fileName, string fileType, int offset, int count)
        {
            var fileApi = new FileApi(config);

            try
            {
                if (!Directory.Exists(ConfigurationManager.AppSettings["SourcePath"] + "metrics/"))
                {
                    Directory.CreateDirectory(ConfigurationManager.AppSettings["SourcePath"] + "metrics/");
                }
                Stream file          = new FileStream(fileName + fileType, FileMode.Open, FileAccess.Read);
                Stream outFileStream = new FileStream(ConfigurationManager.AppSettings["SourcePath"] + "metrics/" + Path.GetFileName(fileName) + "-" + fileType + "_" + offset / count + "_" + DateTime.Now.Ticks + "_Metric.txt", FileMode.OpenOrCreate, FileAccess.Write);

                var outFile = new StreamWriter(outFileStream);
                var timer   = new Stopwatch();
                for (var i = offset; i < offset + count; i++)
                {
                    file.Seek(0, SeekOrigin.Begin);
                    timer = Stopwatch.StartNew();
                    var response = fileApi.FileUploadPostWithHttpInfo(Path.GetFileNameWithoutExtension(fileName) + "_" + i + Path.GetExtension(fileName) + fileType, file);
                    if (response.StatusCode > 200 && response.StatusCode < 205)
                    {
                        timer.Stop();
                        outFile.Write("Uploading time: " + timer.ElapsedMilliseconds + ", " + Path.GetFileNameWithoutExtension(fileName) + "_" + i + Path.GetExtension(fileName) + fileType + "\n\n");
                        Console.WriteLine(Path.GetFileNameWithoutExtension(fileName) + "_" + i + Path.GetExtension(fileName) + fileType + " upload success!");
                    }
                    else
                    {
                        Console.WriteLine("File upload failed!");
                    }
                    if (response.Data != null)
                    {
                        var a = response.Data;
                    }
                }

                Console.WriteLine("\n\nAll files uploaded successfully!");

                file.Close();
                outFile.Close();
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message + "\n");
                //Console.WriteLine("File create failed. No such directory or access failure.\n");
            }
        }