How to do AsyncPostBackTrigger for the LinkButton in the Repeater

Inside ItemCreated event of the Repeater control register the button with ScriptManager.

//Inside ItemCreatedEventScriptManager scriptMan = ScriptManager.GetCurrent(this);LinkButton btn = e.Item.FindControl("order_button") as LinkButton;if(btn != null){    btn.Click += LinkButton1_Click;    scriptMan.RegisterAsyncPostBackControl(btn);}

I had similar problem, but I didn't want to update the whole repeater, only a content outside of the repeater... so what I did was

1. Add the repeater

<asp:Repeater ID="productList" runat="server">  <!-- my repeater --><asp:Repeater>

2. Add the Update Panel with the updatable content, and the trigger

<asp:UpdatePanel ID="up" runat="server">    <ContentTemplate>        <!-- when click on repeater's links, this content will be updated -->    </ContentTemplate>    <Triggers>        <!-- trigger will be the repeater's links/btn that generate postback -->        <asp:AsyncPostBackTrigger ControlID="productList" />    </Triggers></asp:UpdatePanel>

Adding the following attribute to the page directive containing the repeater and linkbutton will also work:

<%@ page ClientIDMode="AutoID" %>

I had a control that needed to work both asynchronously and full postback, so using the ScriptManager.RegisterAsyncPostBackControl would not work for me. By enclosing the control (which contained a repeater and linkbutton) inside of an UpdatePanel, the linkbutton would cause an asynchronous postback. With no updatepanel, the linkbutton would cause a fullpostback.

Hope this helps someone else.