AJAX :: Refresh Cascading Dropdown From Client Side?

Apr 15, 2010

for the past 6 hours i have been going trough a million forum posts , I've been reading blogs , tutorials documentation and more.

Unfortunately, the amount of deprecated information is absolutely overwhelming.

All i'm trying to achieve is to change the value of a parent dropdown to something else, programmatically, and then have the child dropdowns to refresh.

By now I'm quite certain i have to use the function _onParentChange in some way.
Whit this function i can actually get the first parent to refresh, how ever the functions seems to be doing absolutely nothing when i call it on the child

I've been seeing a lot about using a context key and several ways to use it, but I'm not using a context key, do i have to use one?

i'm using the latest version of the toolkit whit visual studios 2008

i'm using only two dropdowns whit two extenders

here is the code:

where i can find proper client side documentation per toolkit control ?

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