用vs2012建立的asp.net web 窗体网站 数据库 连接问题
我用vs2012建立的asp.net web 窗体网站
建好后自动生成
如图

运行该网站可以注册和登录 、
登录文件代码
 (Login.aspx)

<%@ Page Title="登录" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="Account_Login" %>

<%@ Register Src="~/Account/OpenAuthProviders.ascx" TagPrefix="uc" TagName="OpenAuthProviders" %>



<asp:Content runat="server" ID="BodyContent" ContentPlaceHolderID="MainContent">

    <hgroup class="title">

        <h1><%: Title %>.</h1>

    </hgroup>

    

    <section id="loginForm">

        <h2>使用本地帐户登录。</h2>

        <asp:Login runat="server" ViewStateMode="Disabled" RenderOuterTable="false">

            <LayoutTemplate>

                <p class="validation-summary-errors">

                    <asp:Literal runat="server" ID="FailureText" />

                </p>

                <fieldset>

                    <legend>登录表单</legend>

                    <ol>

                        <li>

                            <asp:Label runat="server" AssociatedControlID="UserName">用户名</asp:Label>

                            <asp:TextBox runat="server" ID="UserName" />

                            <asp:RequiredFieldValidator runat="server" ControlToValidate="UserName" CssClass="field-validation-error" ErrorMessage="用户名字段是必填字段。" />

                        </li>

                        <li>

                            <asp:Label runat="server" AssociatedControlID="Password">密码</asp:Label>

        &nbs