Question

我创建了一个使用可信连接字符串连接到SQL Server Express x64的Winform。

在开发计算机上（也运行哪个SQL Server），Winform 100％工作，生成的连接字符串为：

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

一旦我在联网的PC上尝试相同的胜利形式，它就无法连接。在远程计算机上，我可以通过网络位置（\\JOHN-WIN7PC

）查看开发计算机

远程PC产生的连接字符串是：

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（它被设置为<default>），关闭了所有防火墙，反恶意软件（不是这应该干扰）并且任何一台机器上都没有安装防病毒软件

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都将受到赞赏，因为我不知所措。

我已粘贴以下例外：

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)

Answer 1

我认为错误非常简单。连接到SQL Server时，不要在服务器名称前添加\\前缀，因此应使用server=\\JOHN-WIN7PC\SQLEXPRESS代替server=JOHN-WIN7PC\SQLEXPRESS。

Office网络SQLEXPRESS - 连接Winform问题

1 个答案: