ASP.NET MVC 4数据库错误

我已经将我的网站发布给了一个网络主机，但是我有一些严重的数据库问题。这是我的错误

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: The connection name 'LocalSqlServer' was not found in the applications configuration or the connection string is empty.

Line 255:            <providers>
Line 256:                <add name="AspNetSqlMembershipProvider"
Line 257:                    type="System.Web.Security.SqlMembershipProvider, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
Line 258:                    connectionStringName="LocalSqlServer"
Line 259:                    enablePasswordRetrieval="false"
Source File: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config    Line: 257 

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如果错误是您收到的，这意味着您在下面的文章中使用了连接字符串“LocalSqlServer”：

<providers>
Line 256:                <add name="AspNetSqlMembershipProvider"
Line 257:                    type="System.Web.Security.SqlMembershipProvider, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
**Line 258:                    connectionStringName="LocalSqlServer"**
Line 259:                    enablePasswordRetrieval="false"

第256行：如果未使用成员资格功能，请从根web.cofig文件的system.web部分删除成员资格、配置文件和角色管理器标记。这帮助我解决了这个问题。
您看到了吗？我想您已经查看了，并且您的配置文件不包含字符串“attachdbfilename”？这听起来像是连接字符串的一部分。是的，我想出来了，但现在我有另一个问题，到底应该删除什么，从哪里删除？
<membership defaultProvider="SiteSqlServer"
      userIsOnlineTimeWindow="15">
      <providers>
        <add 
          name="SiteSqlServer" 
          type="System.Web.Security.SqlMembershipProvider" 
          connectionStringName="SiteSqlServer"
          applicationName="georgi-it"
          enablePasswordRetrieval="false"
          enablePasswordReset="true"
          requiresQuestionAndAnswer="true"
          requiresUniqueEmail="false"
          passwordFormat="Hashed"
          maxInvalidPasswordAttempts="5"
          passwordAttemptWindow="10" />
      </providers>
    </membership>

Exception Details: System.ArgumentException: Invalid value for key 'attachdbfilename'.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

<providers>
Line 256:                <add name="AspNetSqlMembershipProvider"
Line 257:                    type="System.Web.Security.SqlMembershipProvider, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
**Line 258:                    connectionStringName="LocalSqlServer"**
Line 259:                    enablePasswordRetrieval="false"

<connectionStrings>
    **<remove name="LocalSqlServer" />**
    <add name="SiteSqlServer" connectionString="Server=(localhost);Database=ulprojec_******-***;uid=ulprojec_***;pwd=********a;" />   

</connectionStrings>