A FileUpload control

FileUpload returns blob which can we used in various other functions. Below is an example of how to use FileUpload.

http://code.google.com/intl/ru/googleapps/appsscript/service_ui.html

function doGet(e) {
   
  var app = UiApp.createApplication().setTitle("Upload CSV to Sheet");
     var form = app.createFormPanel().setId('frm').setEncoding('multipart/form-data');
     var formContent = app.createVerticalPanel();
   form.add(formContent);  
  formContent.add(app.createFileUpload().setName('thefile'));
     formContent.add(app.createSubmitButton('Submit'));
   app.add(form);
  return app;
 }

function doPost(e) {
   // data returned which can be used to create a blob
  var assignmentFile = e.parameter.file;
     // create a blob which mime type of the document.
  // assuming mime-type to be text in this example
  var uploadBlob = Utilities.newBlob(assignmentFile, "text/plain", "Filename.txt" );
     Logger.log("Size:"+uploadBlob.getBytes().length);
     // only applicable for Google Apps accounts 
  var doc = DocsList.createFile(uploadBlob);
     app.close();
  return app;
 }