小问题：Panel 控件

<%@ Page Language="C#" %>
<script runat="server">    void rbChanged(object sender, EventArgs e) {
        panel1.Visible=true;
        panel2.Visible=false;
    }
    
    void rb2_CheckedChanged(object sender, EventArgs e) {
        panel2.Visible=true;
        panel1.Visible=false;
    }</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <asp:RadioButton id="rb1" Checked="True" Text="Show Table1" GroupName="rb" Runat="server" OnCheckedChanged="rbChanged" AutoPostBack="True"></asp:RadioButton>
        &nbsp; 
        <asp:RadioButton id="rb2" Text="Show Table2" GroupName="rb" Runat="server" OnCheckedChanged="rb2_CheckedChanged" AutoPostBack="True"></asp:RadioButton>
        <p>
        </p>
        <asp:panel id="panel1" runat="server">
            <table border="1">
                <tbody>
                    <tr>
                        <td>
                            Table1</td>
                    </tr>
                </tbody>
            </table>
        </asp:panel>
        <p>
        </p>
        <asp:Panel id="panel2" Runat="server" Visible="False">
            <table border="1">
                <tbody>
                    <tr>
                        <td>
                            Table2</td>
                    </tr>
                </tbody>
            </table>
        </asp:Panel>
    </form>
</body>
</html>