How to show popup window in "-ing" event receiver?
<p>I created event receiver that uses web service, and I want to show the result on popup window. </p>

<p>I know we can use different kinds of redirect in synchronous receivers, but it is called by checkbox in filtered datasheet view, so I'm not able to make redirect back to my page. </p>

<p>So I need to show some popup window. I know we can get HttpContext object in constructor of event receiver, but now I don't know how to call javascript window?</p>
