When clicking on the button. beforeload and load listeners are not firing. Also i have used autoload to false.
Here is the example:-


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test.aspx.cs" Inherits="Test" %>

<%@ Register Namespace="Ext.Net" Assembly="Ext.Net" TagPrefix="ext" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script language="javascript">

        storeLoader = function () {
            debugger;
            Ext.Msg.alert('asdf');

        }

        storeLoader1 = function () {
            debugger;
            Ext.Msg.alert('asdf');

        }

        abc = function () {

            var a = [];
            a.push({ name: 'asdf' });
            App.store.loadData(a, true);

        }
    </script>
</head>
<body>
    <form runat="server">
    <div>
        <ext:ResourceManager runat="server" />
        <ext:GridPanel runat="server" ID="grd">
            <Store>
                <ext:Store runat="server" ID="store" AutoLoad="false">
                    <Model>
                        <ext:Model runat="server">
                            <Fields>
                                <ext:ModelField Name="name" />
                            </Fields>
                        </ext:Model>
                    </Model>
                    <Listeners>
                        <BeforeLoad Fn="storeLoader" />
                        <Load Fn="storeLoader1" />
                    </Listeners>
                </ext:Store>
            </Store>
            <ColumnModel>
                <Columns>
                    <ext:Column runat="server" DataIndex="name" Text="Name" />
                </Columns>
            </ColumnModel>
        </ext:GridPanel>
        <ext:Button runat="server" Text="asdf" Handler="abc" />
    </div>
    </form>
</body>
</html>