Custom Server Control causes full postbacks inside of UpdatePanel

Question

I have a custom server control that seems to work fine until I put it in an UpdatePanel. Once inside the UpdatePanel it continues to work fine but the UpdatePanel now does full postbacks when my custom server control does a postback.

Do I need to do anything to make my custom server control do async postbacks while inside an UpdatePanel?

Here is the relevant code that is causing a full postback. The ecs:Pager control is my custom control that causes full postbacks on the OnCommand event even though it is in the UpdatePanel.

<asp:UpdatePanel ID="ClosedIssuesUpdatePanel" runat="server">
    <ContentTemplate>
        <ecs:Pager ID="ClosedIssuesPager" OnCommand="ClosedIssuesPager_Command" runat="server" />
        <asp:Repeater ID="ClosedIssuesRepeater" runat="server">
        ....
        </asp:Repeater>
    </ContentTemplate>
</asp:UpdatePanel>

Answer 1

Put the update mode of your update panel to conditional.

<asp:UpdatePanel ID="ClosedIssuesUpdatePanel" runat="server" UpdateMode="Conditional">
    <ContentTemplate>
        <ecs:Pager ID="ClosedIssuesPager" OnCommand="ClosedIssuesPager_Command" runat="server" />
        <asp:Repeater ID="ClosedIssuesRepeater" runat="server">
        ....
        </asp:Repeater>
    </ContentTemplate>
</asp:UpdatePanel>