I have a parent page with a TabPanel. To split up the code, I have each panel item within the TabPanel load a custom control. Most of these have a gridpanel.

How do I prevent each of these subpages from loading during the initial parent page load? One, all children pages loading at once would slow app down, and two, the gridpanels on subsequent tabs do not auto expand to fill the parent tabpanel width.




<ext:TabPanel ID="panelTabs" runat="server" AutoHeight="true" AutoWidth="true">
            <Items>
                <ext:Panel ID="panelGrid1" runat="server" Title="Grid 1">
                    <Content>
                        <uc:Panel1 ID="Panel1" runat="server" />
                    </Content>
                </ext:Panel>
                <ext:Panel ID="panelGrid2" runat="server" Title="Grid 2">
                    <Content>
                        <uc:Panel2 ID="Panel2" runat="server" />
                    </Content>
                </ext:Panel>
                 ...
            </Items>
        </ext:TabPanel>