C#: FTP Upload Error – The remote server returned an error:

this error show when i upload image file in ftp server.

at this time i want to create a folder or directory and then save picture in this folder.

var uploadfilename = "DrivingLicenceCardBack";

Stream streamObj = pic2.InputStream;

byte[] buffer = new byte[pic2.ContentLength];

streamObj.Read(buffer, 0, buffer.Length);

streamObj.Close();

streamObj = null;

string ftpurl = String.Format("{0}/{1}", ftpfullpath, uploadfilename);

var requestObj = FtpWebRequest.Create(ftpurl) as FtpWebRequest;

requestObj.Method = WebRequestMethods.Ftp.UploadFile;

requestObj.Credentials = new NetworkCredential(username, password);

Stream requestStream = requestObj.GetRequestStream();

requestStream.Write(buffer, 0, buffer.Length);

requestStream.Flush();

requestStream.Close();

requestObj = null;

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