FTP Upload Problem

Question

FileInfo fileInfo = new FileInfo(filename);


                    string sFtpHostSite = "ftp://" + _sFtpHost.Replace("\0", "");

                    //- Get the object used to communicate with the server.
                    FtpWebRequest request = (FtpWebRequest)WebRequest.Create(sFtpHostSite + @"/" + fileInfo.Name);
                    request.Method = WebRequestMethods.Ftp.UploadFile;
                    //- FTP site login credential.
                    request.Credentials = new NetworkCredential(_sFtpUserId.Trim().Replace("\0", ""), _sFtpPwd.Trim().Replace("\0", ""));
                    request.KeepAlive = false;
                    request.Method = "STOR";
                    request.UseBinary = true;

                    // Copy the contents of the file to the request stream.

                    StreamReader sourceStream = new StreamReader(_sLocalPath.Replace("\0","") + fileInfo.Name);
                    byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
                    sourceStream.Close();
                    request.ContentLength = fileContents.Length;

                    Stream requestStream = request.GetRequestStream();
                    requestStream.Write(fileContents, 0, fileContents.Length);
                    requestStream.Close();
                    //- Wrapping up
                    FtpWebResponse response = (FtpWebResponse)request.GetResponse();

                    Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription);
                    //- Good Bye
                    response.Close();
                }
                catch (Exception oErMsg1)
                {

                    Console.WriteLine(oErMsg1.Message, "Error Occurred while uploading file to FTP server.");

                }

 Does anyone knows why when the file gets uploaded to the FTP-Server it is not the same as the Local-directory?

Explain:

I compress zip some folders on the local computer using 7z library when I open the compressed zip file on my local for test it open and I can unzip it with no problem but once I upload it using my c# FTP-Upload the size of the file is different and when I download it regardless the FTP client used for download the file is corrupted I can't open it.

 

Please see my code for more detail

 

Thanks in advance

AL