I have an UltraWebGrid which uses the WebHierarchicalDataSource to create a parent/child relationship for 2 List<> objects.   I originally was using 2 ObjectDataSources to capture what I needed and bind to the dataviews from the WebHierarchicalDataSource.  This worked fine.  However, I want to filter the objects based on certain criteria(I don't want to use the filtering mechanism in the UltraWebGrid).   So I took the ObjectDataSource controls out and decided to bind the views dynamically to the List<> objects after I filtered the lists accordingly(based on my own search mechanism).  The original grid posts fine, but when I do a postback, I get the error:

"DataView has no DataSourceID or DataSource set."

It seems that the dataview is trying to bind again after the Page_Init event.  Since I repopulate the dataviews in the click event handler, the binding is happening too soon and erroring out.  Can I get some help with this?  Thanks.

Here is the asp code, I commented out the ObjectDataSource cause I'm not using it anymore:

<Infragistics:WebHierarchicalDataSource ID="InvoiceSummaryHierarchicalDS" runat="server" >

<DataViews>

<Infragistics:DataView ID="parentView" />

<Infragistics:DataView ID="childView" />

</DataViews>

<DataRelations>

<Infragistics:DataRelation ParentColumns="GroupId" ChildColumns="GroupId" ParentDataViewID="parentView" ChildDataViewID="childView" />

</DataRelations>

</Infragistics:WebHierarchicalDataSource >

<!-- <asp:ObjectDataSource ID="objOpenInvoiceSummaryGroups" SelectMethod="GetParentInvoiceSummaries" TypeName="Module.Invoices.InvoiceSummariesPresenter" runat="server" >

<SelectParameters>

<asp:Parameter Type="Int32" Name="status" DefaultValue="1" Direction="InputOutput" />

</SelectParameters>

</asp:ObjectDataSource>

<asp:ObjectDataSource ID="objOpenInvoiceSummaryLocations" SelectMethod="GetChildInvoiceSummaries" TypeName="Module.Invoices.InvoiceSummariesPresenter" runat="server" >

<SelectParameters>

<asp:Parameter Type="Int32" Name="status" DefaultValue="1" Direction="InputOutput" />

</SelectParameters>

</asp:ObjectDataSource>-->

protected void Page_Load(object sender, EventArgs e)

{

List

<Svc.InvoiceBillSummary> parentList = _presenter.GetParentInvoiceSummaries((int)Svc.InvoiceStatusTypeEnum.Closed);

List<Svc.InvoiceBillSummary> childList = _presenter.GetChildInvoiceSummaries((int)Svc.InvoiceStatusTypeEnum.Closed);

//filtering happens here

GetHierarchicalData(parentList, childList);

{

parentView.DataSource = parentList;

childView.DataSource = childList;

}