advance combobox that allow to select values from radio
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="dropdownex.aspx.cs" Inherits="dropdownex" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</asp:ToolkitScriptManager>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:DropDownExtender ID="TextBox1_DropDownExtender" runat="server"
DynamicServicePath="" Enabled="True" DropDownControlID="Panel1" TargetControlID="TextBox1"
HighlightBackColor="Orange"
DropArrowBackColor="OrangeRed">
</asp:DropDownExtender>
<asp:Label ID="lbl1" runat="server"></asp:Label>
<asp:Panel
ID="Panel1"
runat="server"
BorderColor="Pink"
BorderWidth="2"
>
<asp:RadioButtonList
ID="RadioButtonList1"
runat="server"
OnSelectedIndexChanged="RadioButtonList1_SelectedIndexChanged"
AutoPostBack="true"
>
<asp:ListItem>Crimson</asp:ListItem>
<asp:ListItem>Orange</asp:ListItem>
<asp:ListItem>HotPink</asp:ListItem>
<asp:ListItem>DarkRed</asp:ListItem>
</asp:RadioButtonList>
</asp:Panel>
</form>
</body>
</html>
Thanks