asp.net - <asp:updatePanel> inside a user control -


i using asp:updatepanel inside user control. user control included inside '.aspx' page. registered , used follows:

<%@ register src="~/forms/testpage.ascx" tagprefix="ig" tagname="usercontrol1" %>      <asp:panel id="uctestusercntrl" visible="false" runat="server">        <ig:usercontrol1 id="usercontrol1" runat="server" />     </asp:panel>  <!-- user control code in diferent page '.ascx' file --> <%@ control language="c#" debug="true" codefile="testusercntrl.ascx.cs"    inherits="test_webusercontrol" autoeventwireup="true" classname="testusercontrol" %>  <asp:content id="content1" runat="server" contentplaceholderid="maincontent">     <asp:scriptmanager id="scriptmanager1" enablepartialrendering="true" runat="server">     </asp:scriptmanager>     <asp:updatepanel id="updatepanel1" runat="server">         <contenttemplate>             <asp:timer id="timer1" runat="server" interval="1000" ontick="time_tick">             </asp:timer>             <asp:label id="lbltimedisplay" text="00:00:00" runat="server" />         </contenttemplate>         <triggers>             <asp:asyncpostbacktrigger controlid="timer" eventname="tick" />         </triggers>     </asp:updatepanel> </asp:content>

the user control looks as:

with error as: "content controls have top-level controls in content page or nested master page references master page."

any suggestion on how fix error.

you have put user control in <contenttemplate></contenttemplate>.if put outside give error get.

<%@ register src="~/forms/testpage.ascx" tagprefix="ig" tagname="usercontrol1" %>    <!-- user control code in diferent page '.ascx' file --> <%@ control language="c#" debug="true" codefile="testusercntrl.ascx.cs"    inherits="test_webusercontrol" autoeventwireup="true" classname="testusercontrol" %>  <asp:content id="content1" runat="server" contentplaceholderid="maincontent">     <asp:scriptmanager id="scriptmanager1" enablepartialrendering="true" runat="server">     </asp:scriptmanager>     <asp:updatepanel id="updatepanel1" runat="server">         <contenttemplate> <asp:panel id="uctestusercntrl" visible="false" runat="server">        <ig:usercontrol1 id="usercontrol1" runat="server" />     </asp:panel>             <asp:timer id="timer1" runat="server" interval="1000" ontick="time_tick">             </asp:timer>             <asp:label id="lbltimedisplay" text="00:00:00" runat="server" />         </contenttemplate>         <triggers>             <asp:asyncpostbacktrigger controlid="timer" eventname="tick" />         </triggers>     </asp:updatepanel> </asp:content>

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