Thanks
And this was the answer I needed: (I am copying and pasting the example.)
Dim ds As New DataSetMe.CalcClientBO.FillAll()Me.ClientInfoBO.FillAll()
ds.Tables.Add(CalcClientBO.CurrentDataTable)ds.Tables.Add(ClientInfoBO.CurrentDataTable)ds.Relations.Add("ListRelation", ds.Tables(0).Columns("ClientKey"), ds.Tables(1).Columns("ClientKey"), False)grdList.DataSource = ds.Tables(0)grdList.LevelTree.Nodes.Add("ListRelation", gvListDtl)grdList.RefreshDataSource()
Initially I didn't find it , because I was looking for webgrid and infragistics posts, and this was in the Winforms posts and related to devexpress, but the problem was the same.
Hugo