Error in uploading file on server

Question

I use web service to upload image on server but when I called it I got following error:

No connection could be made because the target machine actively refused

 

Here is my code snippet.

MemoryStream ms = new MemoryStream(f)

FileStream fs = new FileStream(@"C:\\" + fileName, FileMode.Create);

ms.WriteTo(fs);

ms.Close();

fs.Close();

fs.Dispose();

return "OK";