网页控件的问题，请大家帮忙看一下。
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<h2>
登录
</h2>
<p>
请输入用户名和密码。
<asp:HyperLink ID="RegisterHyperLink" runat="server" EnableViewState="false">注册</asp:HyperLink> 如果您没有帐户。
</p>
<asp:Login ID="LoginUser" runat="server" EnableViewState="false" RenderOuterTable="false">
<LayoutTemplate>
<span class="failureNotification">
<asp:Literal ID="FailureText" runat="server"></asp:Literal>
</span>
<asp:ValidationSummary ID="LoginUserValidationSummary" runat="server" CssClass="failureNotification"
ValidationGroup="LoginUserValidationGroup"/>
<div class="accountInfo">
<fieldset class="login">
<legend>帐户信息</legend>
<p>
<asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">用户名:</asp:Label>
<asp:TextBox ID="UserName" runat="server" CssClass="textEntry"></asp:TextBox>
<asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName"
CssClass="failureNotification" ErrorMessage="必须填写“用户名”。" ToolTip="必须填写“用户名”。"
ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator>
</p>
<p>
<asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">密码:</asp:Label>
<asp:TextBox ID="Password" runat="server" CssClass="passwordEntry" TextMode="Password"></asp:TextBox>
<asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password"
CssClass="failureNotification" ErrorMessage="必须填写“密码”。" ToolTip="必须填写“密码”。"
ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator>
</p>
<p>
<asp:CheckBox ID="RememberMe" runat="server"/>
<asp:Label ID="RememberMeLabel" runat="server" AssociatedControlID="RememberMe" CssClass="inline">保持登录状态</asp:Label>
</p>
</fieldset>
<p class="submitButton">
<asp:Button ID="LoginButton" runat="server" CommandName="Login" Text="登录" ValidationGroup="LoginUserValidationGroup"/>
</p>
</div>
</LayoutTemplate>
</asp:Login>
</asp:Content>
