<%@ Page Language="C#" %>
<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    protected void Button1_Click(object sender, EventArgs e)
    {
        Button1.Text = DateTime.Now.ToString();
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server">
            <asp:Button ID="Button1" runat="server" onclick="Button1_Click" />
           <asp:TreeView ID="TreeView1" runat="server">
            <Nodes>
                <asp:TreeNode Text="1"></asp:TreeNode>
            </Nodes>
           </asp:TreeView>
        </telerik:RadAjaxPanel>
    </div>
    </form>
</body>
</html>
