Private Sub editOperator_KeyPress(ByVal sender As Object, ByVal e As _
  System.Windows.Forms.KeyPressEventArgs) Handles editOperator.KeyPress
If (e.KeyChar <> "l"c) And (e.KeyChar <> "L"c) And (e.KeyChar <> "<"c) _
And (e.KeyChar <> Chr(13)) And (e.KeyChar <> Chr(8)) And (e.KeyChar <> _
">"c) And (e.KeyChar <> "="c) Then
			e.Handled = True
		Else
			pKey = e.KeyChar
			If pKey = Chr(13) Then
				editValue.Focus()
			End If
			e.Handled = False
		End If
 
	End Sub

Ciao

J?rgen

PS: geht nicht gibt's nicht