Row number column with grouping

Hi Dimitrina,

yes I'm following that demo. My code works as well if I group the colums by dragging them in the Group Panel. 

If I define my groupdescriptors like this:

                <telerik:RadGridView.GroupDescriptors>
                    <telerik:GroupDescriptor Member="CentroDiLavoro" />
                    <telerik:GroupDescriptor Member="GiornoProduzione" />
                    <telerik:GroupDescriptor Member="Turno" />
                </telerik:RadGridView.GroupDescriptors>

inside the telerik:RadGridView, the row number is shown not sorted instead.

I use group descriptors because I want users to have a default setting that ​they can customize.

Regards,

Matteo