How to use pipeline command to send FTP file using C# winform?

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C#

PowerShell

FTP

Hi Guys, as you can see my question I'm trying to use powershell using c# winform to send an ftp, this my be a bit odd because there is a much simple way, i did this because i can't connect in my client but when i'm using a powershell i can connect to them. Our client already tried to whitelist my IP in their side but still zero chance of connecting using my app that is why i create the code below. This my first time using this i really don't know what am i doing.

Runspace runspace = RunspaceFactory.CreateRunspace();
            runspace.Open();
            Pipeline pipeline = runspace.CreatePipeline();
            pipeline.Commands.AddScript("open 192.168.100.101");
            pipeline.Commands.AddScript("user1");
            pipeline.Commands.AddScript("demo");
            pipeline.Commands.AddScript("lcd c:\ftpuploads");
            pipeline.Commands.AddScript("put samplefile.txt");
            Collection <PSObject> results = pipeline.Invoke();
            runspace.Close();
            StringBuilder stringBuilder = new StringBuilder();
            foreach (PSObject pSObject in results)
            {
                stringBuilder.AppendLine(pSObject.ToString());
            }
            return stringBuilder.ToString();

What I have tried:

i'd really like to my code below but still i can't connect to my client due to the passive server error i know this a firewall cause but they put me in a whitelist and the powershell is working

string FileName = filePath.Split(Path.DirectorySeparatorChar).Last();
            bool usePassive = Settings.Default.UsePassive;
            bool useBinary = Settings.Default.UseBinary;
            bool keepAlive = Settings.Default.KeepAlive;
            try
            {
                FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpServer + FileName);
                request.Method = WebRequestMethods.Ftp.UploadFile;
                request.Credentials = new NetworkCredential(ftpUsername, ftpPassword);
                request.UseBinary = true;
                request.UsePassive = true;
                request.KeepAlive = false;
                request.Proxy = new WebProxy();
                using (FileStream stream = File.OpenRead(filePath))
                {
                    byte[] buffer = new byte[stream.Length];
                    stream.Read(buffer, 0, buffer.Length);
                    stream.Close();
                    using (Stream reqStream = request.GetRequestStream())
                    {
                        reqStream.Write(buffer, 0, buffer.Length);
                        reqStream.Close();
                    }
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }