我如何解决此错误 MVC 4 中 asp.net 的 web.config 中不允许 'connectionStringName' 属性

How can i resolve this error the 'connectionStringName' attribute is not allowed in web.config of asp.net in MVC 4

如何解决 connectionStringName' attribute is not allowed in visual studio in mvc 4 asp.net

的问题

web.config

<connectionStrings>
<add name="DefaultConnection" providerName="System.Data.SqlClient" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=aspnet-MVE-20171019175539;Integrated Security=SSPI" />
<add name="SchoolContext"    connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\university.mdf;Integrated Security=True" providerName="System.Data.SqlClient" />
</connectionStrings>

Web.config // Line 60 column 189 the code below

    <providers>
    <add name="DefaultSessionProvider" 
    type="System.Web.Providers.DefaultSessionStateProvider, 
    System.Web.Providers, Version=1.0.0.0, Culture=neutral, 
    PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" />
    </providers>

删除:

<add name="DefaultConnection" providerName="System.Data.SqlClient" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=aspnet-MVE-20171019175539;Integrated Security=SSPI" />

来自您的连接字符串。你不需要它,因为你正在使用 'SchoolContext'.

同时删除:

<providers>
<add name="DefaultSessionProvider" 
type="System.Web.Providers.DefaultSessionStateProvider, 
System.Web.Providers, Version=1.0.0.0, Culture=neutral, 
PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" />
</providers>

您没有使用任何类型的身份验证是吗?