关于ext数据[vb.net]

在ext我这么写。。。为什么我的box下拉没数据？？？

这样的空白...我才接触 vb 和 ext 一礼拜不好意思小白在学习中

           <ext:SelectBox

            ID="SelectBox1"

            runat="server" 

            DisplayField="user_id"

            ValueField="user_pwd"

            EmptyText="..." QueryMode="Local">

                <%--  TriggerAction="All"--remote--%>

                

                  <Store>

                    <ext:Store ID="Storeaccess" runat="server" AutoDataBind="true">

                        <Model>

                            <ext:Model ID="Model1" runat="server">

                                <Fields>

                                    <ext:ModelField Name="user_pwd"/>

                                    <ext:ModelField Name="user_id" />

                                </Fields>

                            </ext:Model>

                        </Model>



                        <Reader>

                            <ext:ArrayReader></ext:ArrayReader>

                        </Reader>

                    </ext:Store>

                </Store>

          

            </ext:SelectBox>

VB中

        Dim data_ch As New DB_Choose

        Dim dtable As New DataTable

        Dim msg As New MessageBox

        data_ch.Choose("oledb")

        dtable = data_ch.GetRecordDT("logintest.mdb", "*", "usermessage", "", True, True)

        'msg.Alert("111", dtable).Show()



        Storeaccess.Data = dtable

--------------------编程问答--------------------

数据是这样的

补充：.NET技术 ,  VB.NET