Raise CellValueChanged from a custom editing control in a DataGridView

public class DataGridViewNumericTextBoxEditingControl : DataGridViewTextBoxEditingControl
{
    protected override void OnKeyPress(KeyPressEventArgs e)
    {
        e.Handled = Char.IsLetter(e.KeyChar);
        if (!e.Handled)
            RaiseDataGridViewCellValueChanged(); // <-- Any way?
    }
}

public class DataGridViewNumericTextBoxEditingControl : DataGridViewTextBoxEditingControl
{
    protected override void OnKeyPress(KeyPressEventArgs e)
    {
        e.Handled = Char.IsLetter(e.KeyChar);
        if (!e.Handled)
        {
            EditingControlDataGridView.EndEdit();
            EditingControlDataGridView.BeginEdit(false);
        }
    }
}