"属性'connectionStringName'缺失或为空." 在Web.config中

Question

我的Web.config文件突然出现以下错误,我不明白这意味着什么:

分析器错误消息:属性"connectionStringName"缺失或为空.

Line 24:       <providers>
Line 25:         <clear />
Line 26:        <add name="SMDPortalMembershipProvider" type="SMDPortalMembershipProvider" />
Line 27:       </providers>
Line 28:     </membership>

源文件:c:\ inetpub\wwwroot\web.config行:26

版本信息:Microsoft .NET Framework版本:4.0.30319; ASP.NET版本:4.0.30319.272

这是我的配置文件:

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <connectionStrings>
    <add name="ApplicationServices"
      connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true"
      providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <system.web>
    <compilation debug="true" targetFramework="4.0">
      <assemblies>
        <add assembly="UODOTNET, Version=2.2.5.7444,
          Culture=neutral, PublicKeyToken=335F3FBD4BE82339"/>
        <add assembly="System.Core, Version=4.0.0.0,
          Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
      </assemblies>
    </compilation>
    <authentication mode="Forms">
      <forms loginUrl="Default.aspx" timeout="2880" />
    </authentication>
    <authorization>
      <deny users="?" />
    </authorization>
    <membership defaultProvider="SMDPortalMembershipProvider">
      <providers>
        <clear />
        <add name="SMDPortalMembershipProvider" type="SMDPortalMembershipProvider" />
      </providers>
    </membership>
    <customErrors mode="Off"/>
    <sessionState cookieName="smd_portal_session" timeout="100"/>
  </system.web>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

加载Default.aspx页面时没有错误,但是一旦我的代码调用了Membership类,我就会收到错误.

Answer 1

您的会员提供商的配置部分需要一个connectionStringName属性.没有它connectionStringName,它不知道在哪个数据库中查找成员资格信息.

您需要将该部分中的一个连接字符串的名称添加connectionStrings到第add26行的标记中.

该connectionStringName属性是必需的,以使您的Web.Config有效.Membership没有它你就不能使用它.