Search not working on Gridview

I have Implemented the Search on gridview for columns from http://www.aspsnippets.com/Articles/Search-GridView-records-data-on-TextBox-KeyPress-using-jQuery-in-ASPNet.aspx link. I implemented as per my requirement.But it is not working for me. Please see the code for your reference:-
<asp:GridView ID="grdCSRPageData" runat="server" Width="100%" border="1" Style="border: 1px solid #E5E5E5;" CellPadding="3" class="hoverTable" AutoGenerateColumns="false" AllowPaging="True" BackColor="#E5E5E5" BorderColor="#999999" BorderStyle="Solid&quo ...