Asp.Net Ftp Resim Boyut Sorunu

FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create("ftp://www.adres.com/dosyanın yolu" + fu_kResim.FileName);  
                      ftpRequest.Credentials = new NetworkCredential("ftpusername", "ftpsifre");  
                      ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;  
                      FtpWebResponse responseFileUpload = (FtpWebResponse)ftpRequest.GetResponse();