No prob. Glad you got it fixed.

>Yes, my bad, it is an ASP.NET, using C# on visual studio 2005.
>
>Thanks for your help.
>
>>So this is an ASP.NET application. I assumed a Windows forms application. I would still watch for the IDE to "lose" event wire-ups sometimes ( at least in VS2003 ). It can be very disconcerting.
>>
>>>Thanks Bill, I found that the AutoPostBack was set to false, changed to
>>>true and that fixed it.
>>>
>>>>Hi Luis,
>>>>
>>>>I have found that sometimes, for some reason the IDE "loses" the event wire-up in the code behind. Two things I know of to start looking are to
>>>>
>>>>1) Check the code behind to make sure the event is wired up. You should have a statement in the form's InitializeComponent() method that looks like:

>>>>this.YourDropDown.SelectedIndexChanged += new System.EventHandler(this.YourDropDown_SelectedIndexChanged);

>>>>2) Save your code in the SelectedIndexChanged method, remove the method from the control and recreate it to get the IDE to recreate the event wire up.
>>>>
>>>>Bill
>>>>
>>>>>Hi Everybody, I'm having a problem with an event that doesn't trigger,
>>>>>I drop a DropDownList in my form, lets say "MyDropDown", double click on it
>>>>>to create the MyDropDown_SelectedIndexChanged event, so far so good, put some code there like MessageBox.Show("Hello world.") and when I run the page and select a value from the DropDown the event doesn't trigger, what can it be?
>>>>>
>>>>>Any help would be appreciated, thanks.