How to upload a file with watir and IE?

Question

I am writing a watir script to test an upload form.

But the script does not automatically choose the file that is to be uploaded from my harddrive.

Instead I

Answer 1

  @modal = @browser.driver.switch_to.alert   #Switch to open windows modal
  key_to_send = "C:\\Users\\singhku\\Calabash_doc.pdf"  #Path and name of file
  @modal.send_keys(key_to_send)

  require 'win32ole'
  wsh = WIN32OLE.new('Wscript.Shell')
  wsh.AppActivate('Choose File to Upload')  #Name of the modal that is open
  wsh.SendKeys('{ENTER}')