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我有一些已部署的 Windows 窗体应用程序停止在特定机器上工作。重新安装重新部署所有 .exe 和 .dll 对解决错误没有影响。

在应用程序的第一次数据库访问中，错误如下：

Microsoft .NET Framework

Consulte o final desta mensagem para obter detalhes sobre como chamar a 
depuração just-in-time (JIT) em vez desta caixa de diálogo.

************** Texto de Exceção **************
System.Data.SqlClient.SqlException (0x80131904): Erro de rede ou específico à instância ao estabelecer conexão com o SQL Server. O servidor não foi encontrado ou não estava acessível. Verifique se o nome da instância está correto e se o SQL Server está configurado para permitir conexões remotas. (provider: Named Pipes Provider, error: 40 - Não foi possível abrir uma conexão com o SQL Server) ---> System.ComponentModel.Win32Exception (0x80004005): O sistema não pode encontrar o arquivo especificado
   em System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   em System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   em System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover)
   em System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover)
   em System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout)
   em System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
   em System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions)
   em System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
   em System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
   em System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnectionOptions userOptions)
   em System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnectionOptions userOptions)
   em System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   em System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   em System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   em System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   em System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   em System.Data.SqlClient.SqlConnection.Open()
   em CodeFluent.Runtime.CodeFluentPersistence.OpenConnection()
   em CodeFluent.Runtime.CodeFluentPersistence.InternalExecuteReader(CommandBehavior behavior, Boolean firstTry)
   em CodeFluent.Runtime.CodeFluentPersistence.ExecuteReader(CommandBehavior behavior)
   em CodeFluent.Runtime.CodeFluentPersistence.ExecuteReader()

我的 app.config 文件有一个

<configSections>
      <section name="MyApp" type="CodeFluent.Runtime.CodeFluentConfigurationSectionHandler, CodeFluent.Runtime" />
    </configSections>

然后是这样的标签：

 <MyApp persistenceTypeName="MySQL"

我知道这使得 codefluent 寻找 MySql.Data 而不是默认的 System.Data (Sql Server) ...

什么可能导致特定机器上的 winforms 应用程序的这种特定部署被覆盖？

错误堆栈跟踪的关键点是：

   em System.Data.SqlClient.SqlConnection.Open()
   em CodeFluent.Runtime.CodeFluentPersistence.OpenConnection()

OpenConnection 转换为 System.Data，而不是 MySql....

我应该在这台机器的 Windows 7 操作系统上检查哪些可能导致这种奇怪行为的东西，而不是具有相同应用程序的其他 Windows 7 操作系统工作得很好？

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