UpdatePanel and AutoPostback

I have a textbox with AutoPostback set to true to fire an OnTextChanged event. This worked until I put the textbox inside an UpdatePanel and now it doesn't fire the event. Why is that?

Thanks

Sounds odd, I have a repeater where I have a TextBox and the TextChanged event fires to potentially show more controls based on the record being changed. I have it wrapped in an update panel and it works fine.

<asp:ScriptManagerProxyID="ScriptManagerProxy1"runat="server">

</asp:ScriptManagerProxy>

<asp:UpdatePanelID="UpdatePanel1"runat="server">

<ContentTemplate>

<asp:UpdateProgressID="UpdateProgress1"runat="server">

<ProgressTemplate>

Updating...</ProgressTemplate>

</asp:UpdateProgress>

'''''Stuff goes here, like tables and my repeater, etc.

<asp:TextBoxID="txtQty"runat="server"Width="35"AutoPostBack="true"OnTextChanged="txtQty_TextChanged"></asp:TextBox>

'''''Stuff goes here, like tables and my repeater, etc.

</ContentTemplate>

</asp:UpdatePanel>

ProtectedSub txtQty_TextChanged(ByVal senderAsObject,ByVal eAs System.EventArgs)

'Event Handler Guts go here

Me.SetFocus(txtQty.UniqueID)

Next

EndSub

Are you sure the event isn't firing (did you check in the debugger)? If the actions of your OnTextChanged event handler don't act on an UpdatePanel that's updating in the resulting partial postback, you aren't going to see anything happen. So, if you just wrapped that TextBox in an UpdatePanel and nothing else, it would appear that it stopped working.