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UpdatePanel OnSelectedIndexChanged not firing

Posted By:      Posted Date: September 15, 2010    Points: 0   Category :ASP.Net
HiI have an UpdatePanel with a dropdownlist (countries) and a multi-select listbox (locations). If the user selects a country, the locations for the country get populated. By default, all locations must be selected.Works absolutely fine, except that if you choose a country, then change the country back to the original value ("All Countries") - the OnSelectedIndexChanged doesn't fire. Page PostBack occurs, tho.Any help? AutoPostback is true, everything else works fine, just can't get the darned event to fire on when the original value is Selected. The result is that the drop-down list gets populated with the default list of locations (for All Countries), but they aren't selected...only the subset from the previously selected country are selected???ThanksSean

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