how to make final row's word bold in gridview when using jquery ui in gridview

after installed essential things with nuget, gridview is using jquery ui style and hope final row of gridview's word bold however, it is not bold
it seems Calculated_RowDataBound do not take effect, when OnPreRender take effect
however the code in databound can not put in OnPreRender

.gridCellBoldRed{ font-weight:bold; color: Red;} <link href="css/cupertino/jquery-ui-1.10.3.custom.css" rel="stylesheet"> <script src="Scripts/jquery-2.1.0.js"></script> <script src="Scripts/jquery-ui-1.10.4.js"></script> <script src="js/themeswitchertool.js" type="text/javascript"></script> <script type="text/javascript">protected void Calculated_RowDataBound(Object sender, GridViewRowEventArgs e) { if(e.Row.RowType == DataControlRowType.DataRow) { DataRowView row = (DataRowVi ...