ASPxGridView中如何对主从表绑定数据

注：在从表的aspxgridview中的（OnDataBinding（）事件中绑定数据）-----代码如下

//绑定属性值表
protected void grid2_sonTable_DataBinding(object sender, EventArgs e)
{
ASPxGridView songrid = (ASPxGridView)sender; //实例化从表表
object _faterid = songrid.GetMasterRowKeyValue(); //获取主表行id（模板grid中的id值）
DataTable dt = new DataTable();
dt = goodsmanagebll.Get_GetAttributeValueListByAttrId(int.Parse(_faterid.ToString())).Tables[0];
songrid.DataSource = dt;

}

gridview主从表效果图：

主从表绑定代码图：

//主从表前端代码

<dx:ASPxGridView ID="ASPxGridView2" ClientInstanceName="ASPxGridView2" runat="server" Width="55%" AutoGenerateColumns="False" KeyFieldName="ATTRID" Theme="Mulberry"
OnHtmlDataCellPrepared="ASPxGridView2_HtmlDataCellPrepared" OnHtmlEditFormCreated="ASPxGridView2_HtmlEditFormCreated" OnRowDeleting="ASPxGridView2_RowDeleting"
OnRowUpdating="ASPxGridView2_RowUpdating" OnRowInserting="ASPxGridView2_RowInserting">
<ClientSideEvents EndCallback="grid2_EndCallback" />
<SettingsText EmptyDataRow="暂无数据" CommandEdit="修改" />
<SettingsEditing Mode="PopupEditForm"></SettingsEditing>
<SettingsDetail ShowDetailRow="True" AllowOnlyOneMasterRowExpanded="true" />
<Styles>
<%--<AlternatingRow Enabled="True" />
<Header HorizontalAlign="Center" />
<CommandColumn Spacing="10px" Wrap="False" />--%>
<%--<Header BackColor="#b5b5ff" ForeColor="#000000"></Header>--%>
<Cell HorizontalAlign="Center"></Cell>
<Table CssClass="tw-dataTable"></Table>
<Header CssClass="tw-dtheader" HorizontalAlign="Center"></Header>
<CommandColumn CssClass="tw-commandColumn"></CommandColumn>
<CommandColumnItem CssClass="tw-commandColumnBtn"></CommandColumnItem>
<FocusedRow CssClass="tw-focusRow"></FocusedRow>
</Styles>
<SettingsPager PageSize="10" />
<SettingsBehavior AllowFocusedRow="True" />
<SettingsEditing Mode="PopupEditForm"></SettingsEditing>
<Settings GridLines="Horizontal" />
<SettingsPopup>
<EditForm Modal="true" HorizontalAlign="WindowCenter" VerticalAlign="WindowCenter" />
</SettingsPopup>
<SettingsBehavior ConfirmDelete="true" />
<SettingsText ConfirmDelete="确定要删除吗？" />
<SettingsDetail ShowDetailRow="true" />
<Columns>

<dx:GridViewDataColumn Caption="编号" VisibleIndex="1" FieldName="ATTRID" Width="2%"></dx:GridViewDataColumn>
<dx:GridViewDataColumn Caption="属性名称" VisibleIndex="2" FieldName="ATTRNAME" Width="20%"></dx:GridViewDataColumn>
<dx:GridViewDataComboBoxColumn Caption="属性分组" VisibleIndex="3" FieldName="ATTRGROUPID" Width="20%">
<PropertiesComboBox TextField="ATTRGROUPNAME" ValueField="ATTRGROUPID" ValueType="System.Int32"></PropertiesComboBox>
</dx:GridViewDataComboBoxColumn>
<dx:GridViewDataComboBoxColumn Caption="展示类型" VisibleIndex="4" FieldName="SHOWTYPE" Width="3%">
<PropertiesComboBox>
<Items>
<dx:ListEditItem Value="0" Text="文字" />
<dx:ListEditItem Value="1" Text="图片" />
</Items>
</PropertiesComboBox>
</dx:GridViewDataComboBoxColumn>
<dx:GridViewDataComboBoxColumn Caption="筛选属性" VisibleIndex="5" FieldName="ISFILTER" Width="3%">
<PropertiesComboBox>
<Items>
<dx:ListEditItem Value="0" Text="否" />
<dx:ListEditItem Value="1" Text="是" />
</Items>
</PropertiesComboBox>
</dx:GridViewDataComboBoxColumn>
<dx:GridViewDataColumn Caption="排序" VisibleIndex="6" FieldName="DISPLAYORDER" Width="2%"></dx:GridViewDataColumn>
<dx:GridViewCommandColumn Caption="通用价操作" ShowEditButton="True" ShowNewButtonInHeader="true" ShowDeleteButton="true" ShowInCustomizationForm="True" VisibleIndex="7" Width="8%">
<EditButton Text="修 改"></EditButton>
</dx:GridViewCommandColumn>
</Columns>

<Templates>
<%--从表--%>
<DetailRow>
<p style="color:#b7245f;font-size:13px;font-weight:bold;">属性值列表</p>

<dx:ASPxGridView ID="grid2_sonTable" ClientInstanceName="grid2_sonTable" runat="server" Width="22%" AutoGenerateColumns="False" KeyFieldName="ATTRVALUEID" Theme="Mulberry"
OnDataBinding="grid2_sonTable_DataBinding" OnRowUpdating="grid2_sonTable_RowUpdating" OnRowDeleting="grid2_sonTable_RowDeleting" OnRowInserting="grid2_sonTable_RowInserting" OnHtmlEditFormCreated="grid2_sonTable_HtmlEditFormCreated">
<ClientSideEvents EndCallback="grid2_sonTable_EndCallback" />
<SettingsText EmptyDataRow="暂无数据" CommandEdit="修改" />
<SettingsEditing Mode="PopupEditForm"></SettingsEditing>

<Styles>
<AlternatingRow Enabled="True" />
<Header HorizontalAlign="Center" />
<CommandColumn Spacing="10px" Wrap="False" />
<%-- <Header BackColor="#b5b5ff" ForeColor="#000000"></Header>--%>

<%--<Table CssClass="tw-dataTable"></Table>
<Header CssClass="tw-dtheader" HorizontalAlign="Center"></Header>--%>
<CommandColumn CssClass="tw-commandColumn"></CommandColumn>
<CommandColumnItem CssClass="tw-commandColumnBtn"></CommandColumnItem>
<FocusedRow CssClass="tw-focusRow"></FocusedRow>
<Cell HorizontalAlign="Center"></Cell>
</Styles>
<SettingsBehavior ConfirmDelete="true" />
<SettingsText ConfirmDelete="确定要删除吗？" />
<SettingsPager PageSize="10" />
<SettingsBehavior AllowFocusedRow="True" />
<SettingsEditing Mode="PopupEditForm"></SettingsEditing>
<Settings GridLines="Horizontal" />
<SettingsPopup>
<EditForm Modal="true" HorizontalAlign="WindowCenter" VerticalAlign="WindowCenter" />
</SettingsPopup>
<Columns>
<dx:GridViewDataColumn Caption="编号" VisibleIndex="1" FieldName="ATTRVALUEID" Width="2%"></dx:GridViewDataColumn>
<dx:GridViewDataColumn Caption="属性值" VisibleIndex="2" FieldName="ATTRVALUE" Width="5%"></dx:GridViewDataColumn>
<%-- <dx:GridViewDataColumn Caption="所属属性" VisibleIndex="3" FieldName="ATTRNAME"></dx:GridViewDataColumn>--%>
<dx:GridViewDataColumn Caption="排序" VisibleIndex="4" FieldName="ATTRVALUEDISPLAYORDER" Width="2%"></dx:GridViewDataColumn>
<dx:GridViewDataColumn Caption="属性id" VisibleIndex="6" FieldName="ATTRID" Visible="false"></dx:GridViewDataColumn>
<dx:GridViewDataColumn Caption="属性分组id" VisibleIndex="6" FieldName="ATTRGROUPID" Visible="false"></dx:GridViewDataColumn>
<dx:GridViewDataColumn Caption="属性名称" VisibleIndex="2" FieldName="ATTRNAME" Width="5%"></dx:GridViewDataColumn>
<dx:GridViewCommandColumn Caption="通用价操作" ShowEditButton="True" ShowDeleteButton="true" ShowNewButtonInHeader="true" ShowInCustomizationForm="True" VisibleIndex="5" Width="8%">
<EditButton Text="修改"></EditButton>
</dx:GridViewCommandColumn>
</Columns>

</dx:ASPxGridView>
</DetailRow>

</Templates>
</dx:ASPxGridView>