Pannel

设计如图:

打开源:

<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="btnGetPanleNext" runat="server" Text="注册"
            onclick="btnGetPanleNext_Click" />
        <asp:Panel ID="PanleNext" runat="server">
            <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
            <asp:TextBox ID="txtPassWrod" runat="server"></asp:TextBox>
            <asp:Button ID="btnSure" runat="server" Text="确定" onclick="btnSure_Click" />
        </asp:Panel>

    </div>
    <asp:Panel ID="panelMoreInfo" runat="server">
        你选择的方向:<asp:RadioButton ID="radioCSharp" runat="server" GroupName="Language" Text="C#" />
        <asp:RadioButton ID="radioJava" runat="server" GroupName="Language" Text="VB" />
    </asp:Panel>
    </form>
</body>

后置文件:

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            this.PanleNext.Visible = false;
            this.panelMoreInfo.Visible = false;
        }
    }

双击注册

    protected void btnGetPanleNext_Click(object sender, EventArgs e)
    {
        this.PanleNext.Visible = true;
        this.panelMoreInfo.Visible = false;
    }

双击确定
    protected void btnSure_Click(object sender, EventArgs e)
    {
        this.panelMoreInfo.Visible = true;
        this.PanleNext.Visible = false;
    }