How To calculate summary of Jqgrid Column In asp.net

[iDark]

Hii Guys!! I developed a jqgrid in which i need to calculate summary of 'duration' and 'price' columns on footer of the grid But i dont have idea how to do this as I am first time using the Jqgrid..Below is My code ....\[code\] var categoriesStr = ":All;1:vikas;2:Ankur"; $(function () { $("#UsersGrid").jqGrid({ url: 'getGriddahico.ashx', datatype: 'json', height: 250, colNames: ['UserID', 'username', 'ordinal', 'authcode', 'extension', 'trunk', 'dialnumber', 'dialdate', 'dialtime', 'duration', 'destination', 'price', 'toc'], colModel: [ { name: 'UserID', index: 'UserID', width: 100, sortable: true, align: 'center',hidden:true }, { name: 'username', width: 100, sortable: true, align: 'center' }, { name: 'ordinal', width: 100, sortable: true, align: 'center' }, { name: 'authcode', width: 100, sortable: true }, { name: 'extension', width: 100, sortable: true, align: 'center' }, { name: 'trunk', width: 100, sortable: true, align: 'center' }, { name: 'dialnumber', width: 100, sortable: true, align: 'center' }, { name: 'dialdate', width: 100, sortable: true, align: 'center' }, { name: 'dialtime', width: 100, sortable: true, align: 'center' }, { name: 'duration', width: 100, sortable: true, align: 'center' }, { name: 'destination', width: 100, sortable: true, align: 'center' }, { name: 'price', width: 100, sortable: true, align: 'center' }, { name: 'toc', width: 150, sortable: true, align: 'center' } ], rowNum: 100, rowList: [100, 200, 300], pager: '#UsersGridPager', sortname: 'username', //loadonce: true, viewrecords: true, ignoreCase:true, sortorder: 'asc', autowidth: true, toppager: true, height: '100%' }); $("#UsersGrid").jqGrid('navGrid', '#UsersGridPager', { edit: false, add: false, del: false, search: false }); jQuery("#UsersGrid").jqGrid('filterToolbar', { stringResult: true, searchOnEnter: false }); });\[/code\]Any Help will be Heartily Welcomed ..Thanx in advance...