<script type="text/javascript">var pageindex = 1;
$(function () {$('[id*=rblpricerange] input').unbind().click(function (e) {var val = $('[id*=rblpricerange]').find('input:checked').val();alert(val);});});
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager><asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Always"><ContentTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" onclick="LinkButton1_Click">LinkButton</asp:LinkButton><asp:Label ID="Label1" runat="server" Font-Size="25px" ForeColor="Green">1</asp:Label>
<asp:RadioButtonList CssClass="crblpricebrands" ID="rblpricerange" runat="server" AutoPostBack="True" Font-Size="1em" Width="100%"><asp:ListItem Value="1">Rs.2000 and Below</asp:ListItem><asp:ListItem Value="2">Rs.2001-Rs.5000</asp:ListItem><asp:ListItem Value="3">Rs.5001-Rs.10000</asp:ListItem><asp:ListItem Value="4">Rs.10001-Rs.18000</asp:ListItem><asp:ListItem Value="5">Rs.18001-Rs.25000</asp:ListItem><asp:ListItem Value="6">Rs.25001-Rs.35000</asp:ListItem><asp:ListItem Value="7">Rs.35001 and Above</asp:ListItem></asp:RadioButtonList>
</ContentTemplate></asp:UpdatePanel>
</body>
code behind.......
protected void LinkButton1_Click(object sender, EventArgs e){Label1.Text = (Convert.ToInt32(Label1.Text) + 1).ToString();}