哪位大虾来帮我看下这段代码中哪里有问题。

web.config里面的
<configuration>
   <system.web>
      <authentication mode="Forms"/>
<anonymousIdentification enabled="true"/>
    <profile>
          <properties>
          <add name="FirstName" defaultValue="null" allowAnonymous="true"/>
          <add name="LastName" defaultValue="null" allowAnonymous="true"/>
          <add name="PageVisits" type="Int32" allowAnonymous="true"/>
       </properties>
        </profile>
<compilation debug="true"/>
    </system.web>
</configuration>aspx页面里的代码
<%@ Page Language="C#" %>
<script runat="server">    void Page_Load() {
        this.Profile.PageVisits++;
    }
    
    void UpdateProfile(Object s, EventArgs e) {
        this.Profile.FirstName = this.txtFirstName.Text;
        this.Profile.LastName = this.txtLastName.Text;
    }
    
</script><html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Profile</title>
</head>
<body>
    <form id="form1" runat="server">
        Name: <%= this.Profile.FirstName %> <%= this.Profile.LastName %><br />
        Page Visits:<%= this.Profile.PageVisits%>
        First Name:<asp:TextBox ID="txtFirstName" Runat="Server" /><br />
        Last Name:<asp:TextBox ID="txtLastName" Runat="Server" /><br />
        <asp:Button ID="Button1" Text="Update Profile" OnClick="UpdateProfile" Runat="server" />
    </form>
</body>
一运行就提示无法连接到SQL server数据库。是网上找的。。那段代码需要连接数据库呢？~应该要怎样弄哦。。谢谢……