I don't quite see why this would solve that problem and I'd need an example to be able to nail it down but I'm glad you found a solution.  I'll take a look at the other thread shortly. 

Thanks for answer,

We solved this problem by adding a colum like this one

 <igtbl:TemplatedColumn AllowGroupBy="No" AllowResize="Fixed" AllowRowFiltering="False"
                                                                CellButtonDisplay="Always" CellMultiline="No" Key="IconAdd" SortIndicator="Disabled"
                                                                Width="60px">
                                                                <CellTemplate>
                                                                    <table>
                                                                        <tbody>
                                                                            <tr>
                                                                                <td>
                                                                                    <asp:ImageButton ID="cbutDeletePhoto" runat="server" CausesValidation="False" CssClass="gridImg"
                                                                                        Height="15px" ImageUrl="~/resources/img/applis/boutons/suppr1.gif" OnClientClick="return cbutDeleteResPho_OnClick(this)" Width="15px" /></td>
                                                                            </tr>
                                                                        </tbody>
                                                                    </table>
                                                                </CellTemplate>
                                                                <HeaderStyle HorizontalAlign="Center" />
                                                                <CellStyle Cursor="Hand" HorizontalAlign="Center" VerticalAlign="Middle">
                                                                </CellStyle>
                                                                <Header Caption="Actions" FixedHeaderIndicator="None" Title="Permet d'ajouter un nouvel element;">
                                                                </Header>
                                                            </igtbl:TemplatedColumn>

The worst thing in ultrawingrid is that we have focus problem in edit cell in firefox. The page goes up when we enter in edit mode.

We already post this problem here but there is no answer.

http://blogs.infragistics.com/forums/p/42126/233130.aspx#233130

In Infragistics samples it doesnt seem to do the same.

Sorry for english mistakes.

Thanks for your help.

SIGT