commandfield put title attribute on images button

Question

Is possible to set the title attibute on the image buttons of a commandfield?

 <asp:CommandField ShowDeleteButton="True" ButtonType="Image"  ShowEditButton="True" 
                                DeleteImageUrl="images/BPAnn.gif" EditImageUrl="images/edit.gif" DeleteText="Elimina" EditText="Modifica"
                                UpdateImageUrl="images/apply.gif" CancelImageUrl="images/undo.gif" />

Answer 1

When you say Title do you mean HeaderText???

<asp:CommandField ShowEditButton="True" HeaderText="Testing" />

Answer 2

If You want Tooltip my suggestion is to convert CommandField to TemplateField.

In Template field you have more options available.