I have posted this question before but still there is no solution.
I have no issue when using calendar extender with page without master page.
But when it comes to textbox inside contentplaceholder, calendar extender just didnt display.
Here is my code:
<asp:TextBox ID="txtRegDate" runat="server" CssClass="txtbox" Width="190px"></asp:TextBox>
<asp:ImageButton ID="imgCalendar" runat="server" Height="20px"
ImageUrl="~/img/calendar.jpg" Width="22px" />
<cc1:CalendarExtender ID="txtRegDate_CalendarExtender" runat="server"
Enabled="True" TargetControlID="txtRegDate" PopupButtonID="imgCalendar">
I have googled around and didnt not find any answer that can solve my problem.
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