title: uploading xml string
body: <p>Edit:
  I want to know suppose if there's another way to upload the xml content without passing it as a POST parameter. is this possible?</p>
  
  <p>I currently have a client app that manipulates an xml file, then wants to upload its content back to the server,  If I uploaded back as a get/post string in an ajax call, is there a limitation as to how big the string is?
  is there other way?</p>