I have a dropdownlist that databinds to a class that implements IBindingList. In fact all the controls on my webform databind to my classes. When I click "Save" on the form, a post back happens and all the events fire with the exception of the dropdownlist.

Even when I remove the databinding from the control and populate it with code, the selectedindex_changed event still does not fire when the form posts back.

When I populate the dropdownlist in design view (HTML) however the event fires.

Does anyone have any idea why this may happen?

Sounds like you dont have a handler implemented correctly. How have you wired the event up? What does your server tag look like?

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