Hi,

I am binding my grid to some Entity Framework objects.  I am getting spurious new entities appearing.

I am using the System.Windows.Forms.BindingSource to set the top level object to.  Then I have configured the UltraGrid in the designer to use the BindingSource instance as the grids datasource.

I have 3 bands.  For example:

ClassA (Band 0)
     List   (Band 1) - hidden
     List   (Band 2)

So ClassA has list references to ClassB and ClassC.   I am showing Band 0 and 2.  1 is hidden.

I am using FixedAddRowOnTop to add rows to both Band 0 and Band 2.  When I click on the new row in Band 0, the AddingNew event is fired on the binding source.  If edit a row in Band 0 then click off, the AfterRowUpdate event is fired where I can then add the row to my entities context.

If I do the same for Band 2 then 2 new rows are added to my entities context. Every time I click on the row template header, a new instance of ClassB is created and added automatically to my entity context.

Is there a way to resolve this so that the new instance is not added or I can get a chance to remove it?

I have to work around this just before I do the save:

Private Sub RemoveDodgyEntities()
        For Each added In _context.ObjectStateManager.GetObjectStateEntries(EntityState.Added)
            Dim found As Boolean = False
            ' found
            For Each p In MYGRID.Rows
                For Each r In p.ChildBands(0).Rows
                    If r.ListObject IsNot Nothing Then
                        If Object.ReferenceEquals(r.ListObject, added.Entity) Then
                            found = True
                            Exit For
                        End If
                        If found Then Exit For
                        'Diagnostics.Trace.WriteLine(r.ListObject.ToString())

                    End If
                Next
            Next
            If Not found Then
                _context.DeleteItem(added.Entity)
            End If
        Next

    End Sub

Thanks

Andez