Datagrid Delete row problem

[Agnes]

After the user delete the row, I need to re-calculate the whole datagrid's
invoice amount, So I try the following code.
but I am fail. Does anyone know how to do that ?
I try the datagrid.rowcha nged/ validated event.. etc. BUT it seems didn't
fired (If I press delete )
Public Overrides Function PreProcessMessa ge(ByRef msg As
System.Windows. Forms.Message) As Boolean
Dim keyCode As Keys = CType((msg.WPar am.ToInt32 And Keys.KeyCode),
Keys)
If msg.Msg = WM_KEYDOWN And keyCode = Keys.Delete And
Me.pDataGridTyp e = Bla.INVOICE Then
If MessageBox.Show ("Delete This Row?", "Confirm Delete",
MessageBoxButto ns.YesNo) = DialogResult.No Then
Me.pDeleteRow = False
Return True
Else
Me.pDeleteRow = True
RaiseEvent GridRowDelete() <--------------At this stage, the
row didn't delete yet , so I can't calculate
End If
End If

Return MyBase.PreProce ssMessage(msg)

End Function

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