SFTP File Upload in C# using WINSCP

Recently one of my projects required File upload to a Server using SFTP. To achieve this functionality i used WINSCP library which is free downloadable through http://winscp.net/eng/download.php.
Initially i found it difficult to use the WINSCP through code.So, i thought pf sharing my experience, so that it will be useful for those who needs SFTP file transfer.

Here is the Code snippet for connecting to SFTP server and upload files using WINSCP Libraries from WCF service in C#.

         ///<summary>
        ///Uploading files to server through SFTP
        ///</summary>
        private void UploadFiles(string UploadFile)
        {
            LogMessageToFile("Inside UploadFiles....Starting SFTP uploading of " + UploadFile);
            FileInfo uploadInfo = new FileInfo(UploadFile);
            if (uploadInfo.Length > 0)
            {
                try
                {
                    string username = string.Empty;
                    string password = string.Empty;
                    string remotehost = string.Empty;

                    // Run hidden WinSCP process
                    Process winscp = new Process();
                    remotehost = ConfigurationManager.AppSettings["SFTPServerUser"].ToString();
                    username = ConfigurationManager.AppSettings["SFTPUserName"].ToString();
                    password = ConfigurationManager.AppSettings["SFTPPwd"].ToString();

                    // SFTPExecutable needs to be defined in web.config to point to winscp.com
                    winscp.StartInfo.FileName = ConfigurationManager.AppSettings["SFTPExecutable"];
                    if (winscp.StartInfo.FileName == null || winscp.StartInfo.FileName.Length == 0)
                    {
                        throw new Exception("from PutSFTP: SFTPExecutable not set in config file");
                    }
                    winscp.StartInfo.UseShellExecute = false;
                    winscp.StartInfo.RedirectStandardInput = true;
                    winscp.StartInfo.RedirectStandardOutput = true;
                    winscp.StartInfo.CreateNoWindow = true;
                    winscp.Start();

                    //Feed in the script commands
                    winscp.StandardInput.WriteLine("option batch continue");
                    winscp.StandardInput.WriteLine("option confirm off");
                    winscp.StandardInput.WriteLine("open sftp://" + username + ":" + password + "@" + remotehost + " -hostkey=\"ssh-rsa 1024 53:da:ad:20:06:4e:fc:bf:9d:4f:6d:72:88:b5:14:26\"");
                    winscp.StandardInput.WriteLine("put " + UploadFile);
                    winscp.StandardInput.Close();
                    string output = winscp.StandardOutput.ReadToEnd();
                    LogMessageToFile("Inside Upload files SFTP ..status of upload --> " + output);
                    // Wait until WinSCP finishes
                    winscp.WaitForExit();
                    bool ftpStatus = (winscp.ExitCode == 0);
                    if (ftpStatus)
                    {
                        LogMessageToFile("Inside UploadFiles....Status of SFTP process  --> Success");
                    }
                    else
                    {
                        LogMessageToFile("Inside UploadFiles....Status of SFTP process  --> Failed");
                    }
                }
                catch (Exception ex)
                {
                    LogMessageToFile("Exception in Upload Files to SFTP " + ex.Message.ToString());
                }
            }
            else
            {
                LogMessageToFile("In Upload Files to SFTP. Zip File size is 0. It will not be uploaded.");
                //throw new Exception("Exception in SFTP");
            }
        }