I have accordion panel which place inside UpdatePanel and I want to fire Textbox Change Event but It Shoe error.
my code
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"></asp:ToolkitScriptManager>
<asp:UpdatePanel ID="UpdatePanel9" runat="server">
<ContentTemplate>
<asp:Accordion ID="Accordion1" runat="server" CssClass="accordion" HeaderCssClass="accordionHeader"
HeaderSelectedCssClass="accordionHeaderSelected"
ContentCssClass="accordionContent" SuppressHeaderPostbacks="true" TransitionDuration="250"
FramesPerSecond="40"
RequireOpenedPane="false" AutoSize="None" Width="1262px" Height="277px">
<Panes>
<asp:AccordionPane ID="AccordionPane1" runat="server">
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