I am using an Infragistics UltraGrid in my WinForms application. Infragistics v13.1.

I have recently added code to save grid layouts in a binary serialized format and load them back using the CopyFrom method on the DisplayLayout object.

While I load one of these saved layouts, the grid is modified appropriately and data still shows correctly in the grid, but any time I ask for a ListObject on a row, it returns null. The datasource for the grid is a BindingSource whose DataSource is a BindingList (this data is not changed when the layout is loaded).

Save:

Dim MS As New IO.MemoryStream()
ugl.Save(MS, Infragistics.Win.UltraWinGrid.PropertyCategories.All)
Return MS.ToArray()

Load:

Private Function ConvertToUltraGridLayout(data As Byte()) As UltraGridLayout
    Dim ugl As New UltraGridLayout()
    Dim MS As New IO.MemoryStream(data)
    MS.Seek(0, IO.SeekOrigin.Begin)
    ugl.Load(MS, Infragistics.Win.UltraWinGrid.PropertyCategories.All)
    Return ugl
End Function

dgrServices.DisplayLayout.CopyFrom(ConvertToUltraGridLayout(lOption.Layout))

What do I need to do to get the ListObject to be non-null?

Thanks!