OnValidating in editing control

[Philipp]

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.