Andria Jensen posted the following solution to her relationship problem back in 2006 (
topic):
Dim ds As New DataSet
Me.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()
I used the above code as a template for my own. It has been working beautifully until last Friday. For some reason, using Andria's code as reference, the string "ListRelation" is being treated as a custom property of a business object. The code is trying to find the custom field name of "ListRelation" on the business object CalcClientBO. No changes have been made to CalcClientBO since 12/23/2008.
For additional information, here is the message and the stack trace:
Message: "The given item name could not be evaluated. The item 'ListRelation' does not exist on the business object."
Stack Trace: " at MicroFour.StrataFrame.Business.BusinessLayer.GetDescriptor(String FieldName) at MicroFour.StrataFrame.Business.BusinessLayer.GetPropertyDescriptor(String FieldName) at MicroFour.StrataFrame.Business.BusinessBindingSource.BusinessObject_CurrentView_ListChanged(Object sender, ListChangedEventArgs e) at System.ComponentModel.ListChangedEventHandler.Invoke(Object sender, ListChangedEventArgs e) at System.Data.DataView.OnListChanged(ListChangedEventArgs e)"
The grid involved is a DevEx XtraGrid, but I doubt that should matter much.
Can anyone direct me on what to look for to resolve this problem?
Thanks!!
Bill