How to add meta tag to ASP.Net content page

Place the following in your content page:

<script type="text/javascript">

// here is a cross-browser compatible way of connecting 
// handlers to events, in case you don't have one
function attachEventHandler(element, eventToHandle, eventHandler) {
    if(element.attachEvent) {
       element.attachEvent(eventToHandle, eventHandler);
    } else if(element.addEventListener) {
       element.addEventListener(eventToHandle.replace("on", ""), eventHandler, false);
    } else {
    element[eventToHandle] = eventHandler;
  }
}

attachEventHandler(window, "onresize", function() {
    // the code you want to run when the browser is resized
});

</script>

That code should give you the basic idea of what you need to do. Hopefully you are using a library that already has code to help you write up event handlers and such.

Can you create a public property on the meta control that holds a collection of keywords? You can add to that collection when you go off to get your data the first time, then have the meta control render any values that are present in the collection.