Onvalidating in editorcontrol

[styxke]

Hi,

I made my own DataGridViewEditingControl, DataGridViewCell and DataGridViewColumn.
Is it possible to use an Onvalidating event in an editing control in a datagridview?
I wrote something like this:
Code:

Protected Overrides Sub OnValidating(ByVal e As System.ComponentModel.CancelEventArgs) 
   MyBase.OnValidating(e)
   If Me.Text <> String.Empty Then
      If Me.Text <> "CORRECT"
         e.Cancel = True
      End If
   End If
End Sub

But when tabbing out the cell it gets executed twice plus that the incorrect value in the cell remains and the I can continue to edit in other cells.The event is correctly handled when I click somewhere else with the mouse (being the cursor remaining in the cell until a correct value is given).

Do I need to do something special when the tab key is pressed.

Any help is appreciated.

Thanks in advance.