I have a recursive datatable that, when rendered in the wingrid, should show 3 levels of records in a banded format (parent, child, grandchild) with the appropriate records underneath each band. I've defined a data relation for the datatable that looks like something like this:

_displayDataSet.Relations.Add(new DataRelation("ttSupplyDemandMasterDisplay_ttSupplyDemandMasterDisplay",
new DataColumn[] {
_ttSupplyDemandMasterDisplay.Columns["domain"],
_ttSupplyDemandMasterDisplay.Columns["itemNumber"],
_ttSupplyDemandMasterDisplay.Columns["site"],
_ttSupplyDemandMasterDisplay.Columns["recordType"]},
new DataColumn[] {
_ttSupplyDemandMasterDisplay.Columns["domain"],
_ttSupplyDemandMasterDisplay.Columns["itemNumber"],
_ttSupplyDemandMasterDisplay.Columns["site"],
_ttSupplyDemandMasterDisplay.Columns["parentRecordType"]},
false));

When the wingrid is rendered, however, the + (plus) sign only appears at the top most band. I expected the plus sign to show at the parent and child bands so that when opened up, the parent would show the child bands/records underneath and the child bands would show the grandchild records underneath. Right now it looks like the child and grandchild bands/records are all children of the parent band. I've double checked to make sure my data relation is doing the recursion correctly, and it is. What could be causing the plus sign to not appear for the child bands?

Thanks!

Steve

Steve