DEV-aspxgridview中添加detailrow

 <dx:ASPxGridView ID="ASPxGridView1" runat="server" Width="100%" 
                        AutoGenerateColumns="False" ClientIDMode="AutoID" KeyFieldName="pk_notice" 
                        ClientInstanceName="grid"  
                     OnRowDeleting="grid_RowDeleting" >
                        <SettingsDetail ShowDetailRow="True" />

<SettingsBehavior AllowDragDrop="False" AllowSort="False" AllowFocusedRow="True" 
                            AllowSelectByRowClick="True" AllowSelectSingleRowOnly="True" 
                            ConfirmDelete="True"></SettingsBehavior>

<SettingsText EmptyDataRow="无相关记录！" ConfirmDelete="确定删除吗？"></SettingsText>

<SettingsDetail ShowDetailRow="True"></SettingsDetail>

            <Templates>
                <DetailRow>
                <table style=" width :100%" >
                <tr ><td style="text-align:center; background-color:#FFF9EE ; font-weight : bold;">
                通知
                </td>
                 </tr>
                <tr ><td>
                    <dx:ASPxLabel ID="ASPxLabel1" runat="server"  OnInit ="ASPxLabel1_Init">
                    </dx:ASPxLabel> 
                    </td>
                 </tr>
                 </table>
                </DetailRow>
            </Templates>
                     <Columns>
                         <dx:GridViewCommandColumn VisibleIndex="0">
                             <DeleteButton Text="删除" Visible="True">
                             </DeleteButton>
                             <ClearFilterButton Visible="True">
                             </ClearFilterButton>
                         </dx:GridViewCommandColumn>
                        <dx:GridViewDataTextColumn Caption="pk_notice" FieldName="pk_notice" 
                            Visible="False" VisibleIndex="1"></dx:GridViewDataTextColumn>
                        <dx:GridViewDataTextColumn Caption="标题" FieldName="cTitle" VisibleIndex="2">
                        </dx:GridViewDataTextColumn>
                        <dx:GridViewDataTextColumn 
                            Caption="发布人" FieldName="cWriter" VisibleIndex="3">
                        </dx:GridViewDataTextColumn>
                        <dx:GridViewDataTextColumn 
                            Caption="发布时间" FieldName="dNewDate" VisibleIndex="4">
                        </dx:GridViewDataTextColumn>
                     </Columns>
                     <SettingsBehavior AllowDragDrop="False" AllowFocusedRow="True" 
                     AllowSort="False" ConfirmDelete="True"  AllowSelectSingleRowOnly="True" AllowSelectByRowClick="True"  />
                     <SettingsText EmptyDataRow="无相关记录！" ConfirmDelete="确定删除吗？" />
                    </dx:ASPxGridView>

protected void ASPxLabel1_Init(object sender, EventArgs e)
    {
        ASPxLabel fv = (ASPxLabel)sender;
        GridViewDetailRowTemplateContainer row = (GridViewDetailRowTemplateContainer)fv.Parent;
        string txt = "select cDetails from EI_Notice where pk_notice =‘" + row.KeyValue.ToString() + "‘";
        DataTable dt = CreateData1(txt);
        fv.Text=dt.Rows [0][0].ToString ();
    }