ASP.NET登录界面实现教程

<tr>
    <td>电话号码：</td>
    <td>
        <asp:TextBox ID="Tb_phone" runat="server"></asp:TextBox>
    </td>
    <td>
        <asp:RegularExpressionValidator ID="Rev_phone" runat="server"
         CssClass="error_CSS" ControlToValidate="Tb_phone" SetFocusOnError="True"
          ValidationExpression="^[0-9]{0,13}$" Display="Dynamic" ValidationGroup="Normal">必须为数字，且数字个数在13位之内</asp:RegularExpressionValidator>
    </td>
    </tr>
    <tr>
    <td>Email:</td>
    <td>
        <asp:TextBox ID="Tb_email" runat="server"></asp:TextBox>
    </td>
    <td>
        <asp:RequiredFieldValidator ID="Rfv_email" runat="server"
         ControlToValidate="Tb_email" CssClass="error_CSS" 
         Display="Dynamic" SetFocusOnError="True" ValidationGroup="Normal">必须填写Email</asp:RequiredFieldValidator>
        <asp:RegularExpressionValidator ID="Rev_email" runat="server"  CssClass="error_CSS" ControlToValidate="Tb_email"
         Display="Dynamic" SetFocusOnError="True" ValidationGroup="Normal"
         ValidationExpression="^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$" >请输入一个有效的Email地址</asp:RegularExpressionValidator>
    </td>
    </tr>
    <tr>
    <td colspan="3">
        <asp:Label ID="SaveHint" runat="server" ></asp:Label>
    </td>
    </tr>

    <tr>
    <td colspan="2" align="right">
        <asp:Button ID="Btn_save" runat="server" Text="保存"  ValidationGroup="Normal" />
    </td>
    <td>&nbsp;</td>
    </tr>





<div>
<h3><a href="">密码</a></h3>
<div>
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel ID="Up_changepwd" runat="server">
    <ContentTemplate>
    <asp:ChangePassword ID="ChangePassword" runat="Server"
    ChangePasswordFailureText="密码错误或新密码无效。新密码的最短长度为 {0}" 
    ContinueDestinationPageUrl="~/Account/Profile.aspx">
    <SuccessTemplate>
        <asp:Label ID="Lb_success" runat="server"  CssClass="accept">密码更改完成</asp:Label>
    </SuccessTemplate>
    <ChangePasswordTemplate>
    <table >
    <tr id="tr_name" runat="Server" >
<td>姓名：</td>
        <td>
            <asp:TextBox ID="Tb_name" runat="server"></asp:TextBox>