求助，一个asp登陆界面源码，它限制登录，请大家看看。 - 编程论坛

程序代码：

<title>网站后台管理系统</title>
    <link href="../Css/AdminLogin.css" rel="stylesheet" type="text/css"/>
</head>
<body>


        <form id="form1" runat="server">


        <div id="wrap">
    <div id="loginBox">
        <ul>
            <li> <label>本站域名：</label> <asp:Label ID="LB_Domain" runat="server" Text="本站域名"></asp:Label>
            </li>
            <li><label for="TxtUserName">管理员名称：</label>
                <input name="Txt_UserName" runat="server" type="text" maxlength="20" id="Txt_UserName" class="inText" />
            </li>
            <li><label for="TxtPassword">管理员密码：</label>
                <input name="Txt_UserPwd" runat="server" type="password" maxlength="20" id="Txt_UserPwd" class="inText" />
            </li>
            <li id="LiSiteManageCode" class="text">
                <label for="TxtAdminValidateCode">验    证    码：</label>
                <input name="Txt_Code" runat="server" maxlength="20" id="Txt_Code" class="inText" style="width:50px;" />
                                <img alt="验证码" id="ImgValidateCode" src="/AspxPage/ValidateCode.aspx" title="点此刷新验证码！" style="cursor:pointer;" onclick="this.src='/AspxPage/ValidateCode.aspx?'+Math.round(Math.random()*10000);" />   <span onclick="document.getElementById('ImgValidateCode').src='/AspxPage/ValidateCode.aspx?'+Math.round(Math.random()*10000);">刷新</span>
            </li>

        </ul>
        <div id="buttonBar">
            <asp:CheckBox ID="CB_AutoLogin" runat="server" CssClass="AutoLogin"
                Text="下次自动登录！" Visible="False" />
            <asp:ImageButton ID="IBut_Enter" runat="server"
                ImageUrl="/Image/Default/login_button.gif" onclick="IBut_Enter_Click" />

        </div>

    </div>
    </div>




        </form>




</body>
</html>

验证登陆条件的asp是哪个文件？