how to fire SelectedIndexChanged event in code?

I have a drop downlist that I set the default selection using:

In my Page_Load I have

   MyDropDownList.SelectedIndex = 0

this code is not triggered, it appears that ONLY the User selection will trigger the SelectedIndexChanged event?  Is this how ASP.NET is supposed to work?  If so, how can I trigger the "SelectedIndexChanged" event via code?

thanks, Rob.
RobAinscoughAsked:
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Jeff CertainCommented:
sure can... call the routine like this...

MyDropDownList_SelectedIndexChanged(nothing,nothing)

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RobAinscoughAuthor Commented:
so you're saying that the event can't truely be triggered, just called directly?
Jeff CertainCommented:
Well... it's triggered by client-side events. Since your code to set the value runs on the server, there are no client-side events being triggered...
ISKPatelCommented:
is dropdownlist have any data or list...?
or tel me which error ur got on form load time.

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