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我创建了一个 Winform，它使用受信任的连接字符串连接到 SQL Server Express x64。

在开发机器上（也运行 SQL Server）Winform 工作 100%，生成的连接字符串是：

Persist Security Info=False;
Integrated Security=true;
Initial Catalog=BushBreaksLodgeManager;
server=.\SQLEXPRESS

一旦我在联网的 PC 上尝试相同的 win 表单，它就无法连接。在远程机器上，我可以通过网络看到开发机器，即\\JOHN-WIN7PC

远程 PC 的结果连接字符串是：

Persist Security Info=False;
Integrated Security=true;
Initial Catalog=BushBreaksLodgeManager;
server=\\JOHN-WIN7PC\SQLEXPRESS

我还在 SQL Server 上启用了 TCP-IP（设置为<default>），关闭了所有防火墙、反恶意软件（这不应该干扰），并且两台机器上都没有安装反病毒软件。

SQL database settings are as follows:
==================================================
Authentication method: Windows Authentication
Database: BushBreaksLodgeManager
ServerName: JOHN-WIN7PC\SQLEXPRESS
Instancename: SQLEXPRESS
Computername: JOHN-WIN7PC

Sql Server settings
==================================================
Mixed mode (Win auth and Sql Server)
Connections -> Allow remote connections = true

在这方面的任何帮助将不胜感激，因为我不知所措。

我在下面粘贴了异常：

2011/11/18 04:55:50 PM : Process: UtilsDatabase -> TestDatabaseConnection
2011/11/18 04:56:05 PM : Process: UtilsDatabase -> TestDatabaseConnection Connection failed
2011/11/18 04:56:05 PM : Settings value -> UseIntergratedSecurity: False
2011/11/18 04:56:05 PM : Settings value -> Server: \\JOHN-WIN7PC\SQLEXPRESS
2011/11/18 04:56:05 PM : Settings value -> Database name: BushBreaksLodgeManager
2011/11/18 04:56:05 PM : Connection String: Persist Security Info=False;Integrated Security=true;Initial Catalog=BushBreaksLodgeManager;server=\\JOHN-WIN7PC\SQLEXPRESS

==================== New Exception ====================
2011/11/18 04:56:05 PM

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 25 - Connection string is not valid)

.Net SqlClient Data Provider

   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
   at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity)
   at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, SqlConnection owningObject)
   at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, TimeoutTimer timeout)
   at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, TimeoutTimer timeout, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
   at System.Data.SqlClient.SqlConnection.Open()
   at BushBreaksLodgeManager.UtilsDatabase.TestDatabaseConnection()

Void OnError(System.Data.SqlClient.SqlException, Boolean)
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1 回答 1

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我认为错误很简单。连接到 SQL Server 时，您不要在服务器名称前面加上\\，因此server=\\JOHN-WIN7PC\SQLEXPRESS您应该使用server=JOHN-WIN7PC\SQLEXPRESS.

于 2012-02-05T04:17:14.607 回答