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<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:PlaceHolder ID="PlaceHolder1" runat="server">
<asp:Label ID="Label1" runat="server" Text="Hint info"></asp:Label>
<div style="height:10px"></div>
<asp:Panel ID="Panel1" runat="server">
</asp:Panel>
<div style="height:10px"></div>
</asp:PlaceHolder>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
RadioButtonList rbl = new RadioButtonList();
rbl.AutoPostBack = true;
rbl.ID = "abc";
rbl.SelectedIndexChanged += RadioButtonListSelectIndexChanged;
for (int i= 0; i < 5; i++)
{
rbl.Items.Add(new ListItem(i.ToString(), i.ToString()));
}
Panel1.Controls.Add(rbl);
}
}
private void RadioButtonListSelectIndexChanged(object sender, EventArgs e)
{
Label1.Text = (sender as RadioButtonList).SelectedValue.ToString();
}