pass parameter by selected row in grid panel

[vahid.ch]

hi there.
i have these datas in my grid panel

....
....
....
<ext:CommandColumn Width="50" Header="نمودار">
                        <Commands>
                            <ext:GridCommand icon="ChartBar" CommandName="Surf">
                               <ToolTip Text="Show Chart" />
                            </ext:GridCommand>
                        </Commands>
</ext:CommandColumn>

Name...........LastName.......received.......sent. ......Chart
David...........smith...............500KB......... 1MB....ChartIcon
kevin............................................. ...................ChartIcon
.................................................. ......................ChartIcon


now I want after selecting (ChartIcon) ,I pass selected parameters to my query in stored-procedure to show related chart.