我正在尝试在网格中嵌套网格
要填充最内部网格,我需要来自网格直接父级和网格父级父级的KeyValue。
如何从大多数父母那里检索MasterRowKeyValue?
我有3个网格嵌套如下:
<dxwgv:ASPxGridView ID="gridParents" runat="server" ObjectDataSource="odsParents" KeyFieldName="ParentId">
<SettingsDetail ShowDetailRow="true" />
<Columns>
<dx:GridViewDataColumn FieldName="ParentIdId" Visible="false" />
<dx:GridViewDataColumn FieldName="Title" />
</Columns>
<Templates>
<DetailRow>
<dxwgv:ASPxGridView ID="gridParentsChilren" runat="server" ObjectDataSource="odsParentsChildren" KeyFieldName="ChildId" OnBeforePerformDataSelect="gridParentsChilren_DataSelect">
<SettingsDetail ShowDetailRow="true" IsDetailGrid="true" />
<Columns>
<dx:GridViewDataColumn FieldName="ChildId" Visible="false" />
<dx:GridViewDataColumn FieldName="Title" />
</Columns>
<Templates>
<dxwgv:ASPxGridView ID="gridParentsChilrenRoles" runat="server" ObjectDataSource="odsParentsChildrenRoles" KeyFieldName="RoleId" OnBeforePerformDataSelect="gridParentsChilrenRoles_DataSelect">
<SettingsDetail ShowDetailRow="true" IsDetailGrid="true" />
<Columns>
<dx:GridViewDataColumn FieldName="RoleId" Visible="false" />
<dx:GridViewDataColumn FieldName="Title" />
</Columns>
</dxwgv:ASPxGridView>
</Templates>
</dxwgv:ASPxGridView>
</DetailRow>
</Templates>
</dxwgv:ASPxGridView>
<asp:ObjectDataSource id="odsParents" runat="server" SelectMethod="GetParents" />
<asp:ObjectDataSource id="odsParentsChildren" runat="server" SelectMethod="GetParentsChildren">
<SelectParameters>
<asp:Parameter Name="parentid" Type="Object" />
</SelectParameters>
</asp:ObjectDataSource>
<asp:ObjectDataSource id="odsParentsChildrenRoles" runat="server" SelectMethod="GetParentsRoles">
<SelectParameters>
<asp:Parameter Name="childid" Type="Object" />
<asp:Parameter Name="parentid" Type="Object" />
</SelectParameters>
</asp:ObjectDataSource>
当为第一个Detail网格调用OnBeforePerformDataSelect时,我设置了选择参数DefaultValue,如下所示:
odsParentsChildren.SelectParameters["parentid"].DefaultValue = ((ASPxGridView)sender).GetMasterRowKeyValue().ToString();
对于最内部(第二个)嵌套网格,我需要将我的一个参数设置为最外网格的MasterRowKeyValue。
类似的东西:
odsParentsChildrenRoles.SelectParameters["childid"].DefaultValue = ((ASPxGridView)sender).GetMasterRowKeyValue().ToString();
odsParentsChildrenRoles.SelectParameters["parentid"].DefaultValue = ((ASPxGridView)sender).Master.GetMasterRowKeyValue().ToString();
我如何实现这一目标?
答案 0 :(得分:2)
如果为已处理的详细信息确定主ASPxGridView实例,则可以执行此操作。这可以使用以下代码完成:
protected void ASPxGridView1_BeforePerformDataSelect(object sender, EventArgs e) {
ASPxGridView subDetail = sender as ASPxGridView;
GridViewDetailRowTemplateContainer container = subDetail.NamingContainer as GridViewDetailRowTemplateContainer;
ASPxGridView detail = container.Grid;
odsParentsChildrenRoles.SelectParameters["parentid"].DefaultValue = detail.GetMasterRowKeyValue();
}
答案 1 :(得分:0)
另一个可能的版本
protected void gvMyGridView_BeforePerformDataSelect(object sender, EventArgs e)
{
var gvMyGridView = sender as ASPxGridView;
var parentRow = gvMyGridView.NamingContainer as GridViewDetailRowTemplateContainer;
odsChildDataSource.SelectParameters["Id"].DefaultValue = parentRow .KeyValue.ToString();
}