I have a webservice working fine that uses a web form to send some arguments (select and input type=text) and data (textarea) to a resampling function. (I have used Davin's excellent XML tools that he presented at the conference to output the result as html.)
However I would like the user to be able to point to a text file containing the data, instead of using the textarea form element. I've found the input type=file form element that will enable the user to point to the filename, but how do I get the client to send the contents of that file to webservices?