extjs 2.0 使用gridPanel加载数据特别慢
extjs 2.0 使用gridPanel加载数据特别慢，后台数据库（sql2008）一共才不到150条，绑定控件后加载时需要将尽2分钟，这是什么原因？网上找了好多的资料，都不行啊，数据绑定主要是通过store里的OnReadData="MyData_Refresh5"，然后调用 后台方法实现的

 <ext:GridPanel ID="GridPanel4" runat="server" Title="<font style='font-size:13; font-weight:900; font-family: Arial,Tahoma, '微软雅黑';'>新蒜货源</font>"

                        Width="1240" Height="400" AutoHeight="true" AnchorHorizontal="100%" Cls="x-grid-custom">

                       

                        <Store>

                            <ext:Store ID="Store8" runat="server"  RemotePaging="false" OnReadData="MyData_Refresh5"

                                PageSize="100" >

                                <Proxy>

                                    <ext:PageProxy />

                                </Proxy>

                                <Model>

                                    <ext:Model ID="Model8" runat="server">

                                        <Fields>

                                            <ext:ModelField Name="SaleRecordID" />