.net - How to detect if there is running Javascript in an VB.NET WebBrowser-object -


the situation:
using vb.net framework 3.5 , visual studio 2005 crated project uses webbrowser object in working thrat. breaking down basics, looks like:

dim bwbcompleteddocument boolean = false   sub wbcompleteddocument(byval sender object, byval e system.windows.forms.webbrowserdocumentcompletedeventargs)     bwbcompleteddocument = true end sub  private sub form1_load(byval sender object, byval e system.eventargs)handles me.load     dim th new system.threading.thread(addressof worker)     th.setapartmentstate(threading.apartmentstate.sta)     th.start() end sub  sub worker()     dim wb new webbrowser     wb.scripterrorssuppressed = true     addhandler wb.documentcompleted, addressof wbcompleteddocument      wb.navigate("google.de")      dim start date =      while start.addseconds(20) >         application.doevents()         if (bwbcompleteddocument = true) , (wb.isbusy = false) , (wb.readystate = webbrowserreadystate.complete)             exit         end if     loop      if bwbcompleteddocument = false         exit sub     end if      'more code here  end sub

there no gui of browser works fine. navigate page catch documentcompleted-event, check readystate , if isbuisy , go on code.

the problem
there sites start execute javascript-code when onload-event occurs. if proceed .net code after wb-object has loaded page, wb stops executing javascript.

the question
there way determine if there javascript running in webbrowser-object and/or wait finish?

if able add javascript page raise event signal .net application @ correct moment. or set status in javascript , have .net application poll it.

see: how handle javascript events via webbrowser control winforms


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