Autosearch to Gridview

<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.5.js" type="text/javascript"></script>
        <script type="text/javascript">
      
        $(document).ready(function () {
            // The code block is used to ignore case
            $.extend($.expr[":"], {
                "containsNC": function (elem, i, match, array) {
                    return (elem.textContent || elem.innerText || "").toLowerCase
                    ().indexOf((match[3] || "").toLowerCase()) >= 0;
                }
            });
            // End The code block is used to ignore case


            //If you want to maintain case, use :contains( instead of :containsNC( below-
            $("input.selectorCSS[type=text]").keyup(function () {
                var id = $(this).attr("id");
                id = id.substring(id.lastIndexOf('_'));
                $("span[id*=" + id + "]").closest("tr").show();
                if ($.trim($(this).val()) != "")
                    $("span[id*=" + id + "]:not(:containsNC(" + $(this).val() + "))").closest("tr").hide();
            });
        });
    </script>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" >
        <Columns>
            <asp:TemplateField>
                <HeaderTemplate>
                    <asp:TextBox ID="FirstName" CssClass="selectorCSS" runat="server"></asp:TextBox>
                </HeaderTemplate>
                <ItemTemplate>
                    <asp:Label ID="FirstName" runat="server" Text='<%#Eval("FirstName")%>' />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField>
                <HeaderTemplate>
                    <asp:TextBox ID="MiddleName" CssClass="selectorCSS" runat="server"></asp:TextBox>
                </HeaderTemplate>
                <ItemTemplate>
                    <asp:Label ID="MiddleName" runat="server" Text='<%#Eval("MiddleName")%>' />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField>
                <HeaderTemplate>
                    <asp:TextBox ID="LastName" CssClass="selectorCSS" runat="server"></asp:TextBox>
                </HeaderTemplate>
                <ItemTemplate>
                    <asp:Label ID="LastName" runat="server" Text='<%#Eval("LastName")%>' />
                </ItemTemplate>
            </asp:TemplateField>

        </Columns>
    </asp:GridView>

var obj = new { FirstName = "Ravi", MiddleName = "Kumar", LastName = "Singh" };
           var objList = (new[] { obj }).ToList();
           objList.Add(new { FirstName = "Rajesh", MiddleName = "Mourya", LastName = "Roy" });
           objList.Add(new { FirstName = "Rupesh", MiddleName = "Kumar", LastName = "Chaudhary" });
           objList.Add(new { FirstName = "Madhu", MiddleName = "Kumari", LastName = "Smita" });
           objList.Add(new { FirstName = "Ramesh", MiddleName = "Kr", LastName = "Maurya" });
           objList.Add(new { FirstName = "Rajiv", MiddleName = "Roy", LastName = "Singh" });
           objList.Add(new { FirstName = "Komal", MiddleName = "Mulayam", LastName = "Yadav" });
           GridView1.DataSource = objList;
           GridView1.DataBind();