Using DropDownList with an UpdatePanel in MOSS 2007
Just a quick note (mostly for myself, but sharing is caring :) )..
once MOSS SP1 has been installed and you want to implement an UpdatePanel in a web part on MOSS 2007 in order to capture a SelectedIndexChanged event from a DropDownList you have to add the following to your page_load event
if (this.Page.Form != null)
if (this.Page.Form.Attributes["onsubmit"] == "return _spFormOnSubmitWrapper();")
this.Page.Form.Attributes["onsubmit"] = "_spFormOnSubmitWrapper();";
"_spOriginalFormAction = document.forms.action;_spSuppressFormOnSubmitWrapper=true;",
Otherwise the event wont be captured by the scriptmanager...