Hello Boris,

thank you very much for your answer and the code. I understand it and I'm sure it works but unfourtunatly I forgot to mention in my first post that I'm trying to solve this problem in VB.net.

So it must be my translation below (the events only) why it doesn't work out. My comments indicate where I guess the mistakes.

Dim rowIndex As Integer
Dim isMouseOverRow As Boolean = False

Private Sub cboFind_MouseEnterElement(ByVal sender As Object, ByVal e As Infragistics.Win.UIElementEventArgs) Handles cboFind.MouseEnterElement
    Try
      Dim el As Infragistics.Win.UltraWinGrid.RowUIElement = GetUI(e.Element)

      ' The translation of your "if (el is RowUIElement)" never becomes true, rowIndex never changes
      ' But of course the reason may be found as well in the translation of "GetUI(UIElement el)"
      If TypeOf el Is Infragistics.Win.UltraWinGrid.RowUIElement Then
        rowIndex = el.Row.Index
        isMouseOverRow = True

        lblRowIndex.Text = rowIndex       ' A "Debug-Label" never changes its .Text
      End If
    Catch ex As Exception
      m_objMyParent.m_objErrorHandler.HandleError(ex, INODBG.clsDBG.OutputTypes.MessageBox)
    End Try
End Sub

Private Sub cboFind_MouseLeaveElement(ByVal sender As Object, ByVal e As Infragistics.Win.UIElementEventArgs) Handles cboFind.MouseLeaveElement
    Try
      ' Here you wrote "if (e.Element.GetType() == typeof(RowUIElement))" and I'm sure that my code is different from yours
      If TypeOf e.Element Is Infragistics.Win.UltraWinGrid.RowUIElement Then
        isMouseOverRow = False
      End If
    Catch ex As Exception
      m_objMyParent.m_objErrorHandler.HandleError(ex, INODBG.clsDBG.OutputTypes.MessageBox)
    End Try
End Sub

Private Function GetUI(ByRef el As Infragistics.Win.UIElement) As Infragistics.Win.UltraWinGrid.RowUIElement
    Try
      If el Is Nothing Then Return Nothing

      If TypeOf el Is Infragistics.Win.UltraWinGrid.RowUIElement Then
        Return el
      Else
        Return GetUI(el.Parent)
      End If
    Catch ex As Exception
      m_objMyParent.m_objErrorHandler.HandleError(ex, INODBG.clsDBG.OutputTypes.MessageBox)
    End Try
End Function

Thanks a lot in advance,

Michael

Hi Boris,

thank you very much for asking if everything works well here. Indeed, there is still one thing left I wanted to ask you for help. After implementing your code the only line which is deleted is the last one in the Combo. Not the one where the mouse is over. So the detection of the correct line fails.

Do you have any idea why?

Best regards,

Michael

Hi Michael,

Please try the attached sample and let me know if that is what you are looking for.

Hello,

I am just checking about the progress of this thread. Let me know If you need my further assistance on this.

Hello Boris,

I completely forgot to thank you very much again for all your exellent assistance. Of course, it works!

Best regards,

Michael

Hello Michael,

I am very happy to hear this. If you need a hint or a sample project or code, please feel free to contact me, I will be glad to assist you again.