<Columns>

                <ig:UnboundCheckBoxField   Width="30px" 

                    Key="RowSelected" HeaderChecked="False">

                    <CheckBox CheckedImageUrl="~/ig_res/Default/images/addnewrow_image.gif" 

                        UncheckedImageUrl="~/ig_res/Default/images/add_up.gif" />

                </ig:UnboundCheckBoxField>

So I would guess that I would see the images I picked.  I do not.  Is this a defect?

I just posted this in the webgrid forum. Any suggestions?

I just tried your uncheckedImageUrl and I got the grid to display the image you're interested.  Do you have the latest Service Release installed?  Maybe you could try using just "add_up.gif".  That also seems to work for me.

regards,
David Young 

Hello Florian,

Please let me know your progress with this issue. Did you try David's suggestion?