Grid - How to unselect the first row in a detail view, but preserve the previous selection if any

Detail views are re-created each time you expand them. It also implies that their selection will be cleared, except the first row (see the attached video). Thus, it is not quite clear what selection you don't want to lose. Do you have code that saves selection for detail views and restores it on expansion? If so, you can check, for instance, whether only the first row is selected and clear the selection:

Visual Basic
Private Sub gridView1_MasterRowExpanded(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Grid.CustomMasterRowEventArgs)  
    Dim detailView As GridView = TryCast(gridView1.GetDetailView(e.RowHandle, e.RelationIndex), GridView)  
    Dim rows() As Integer = detailView.GetSelectedRows()  
    If rows.Length = 1 AndAlso rows(0) = 0 Then  
        detailView.ClearSelection()  
    End If  
End Sub  

To give you a more precise answer, we need to better understand your scenario. Would you please clarify what selection you want to preserve? This information will allow us to find an appropriate solution faster.
I hope to receive your response soon.

Hi,
thanks for your attention.
When I select one row, master or detail either, I conserve selected object on current selected list.
When I change page, I select row if it is contained in selected list, for preserve user selection.
Now current issue is:
if expand one row, automatically first detail row is selected and added to the selected list. But this is not a user choice.
In the MasterRowExpanded event:
If Me.pSelectedConsortia IsNot Nothing AndAlso Me.pSelectedConsortia.Count > 0 Then
   For j As Integer = 0 To detailView.RowCount - 1
       …
'if current row it's contained in selected list
detailView.SelectRow(j)
       …
   Next
Else
   detailView.BeginSelection()
   detailView.ClearSelection()
   detailView.EndSelection()
End If
In my code, I know it's a user choice only if row is contained in selected list. In your example code, the user choice is given only if row is selected in detail view. It's quite different.
I hope you understand my effective problem.
Thanks in advance
Sly

>>if expand one row, automatically first detail row is selected and added to the selected list.
You're right, Silvestro.  The CheckBoxRowSelection feature was initially designed for a single view only and due to master-detail specifics the first detail row is selected by default when a master row is expanded. If this behavior doesn't meet your requirements (I mean, you're unable to determine whether or not this row is selected by the end-user), I suggest implementing a similar functionality manually.  Use the helper class from the Multiple selection using checkbox (web style) example as a basis. This way, you can customize the selection logic as your needs dictate and be sure that nothing is selected unless it was made explicitly.
Let us know if we can be of more help.