Question

我有一个Windows窗体应用程序，它使用以下格式的连接字符串连接到SQL Server数据库：

ConnectionString='Data Source=ServerName;Initial Catalog=DbName;User ID=UserName;Password

当用户双击桌面上文件夹中的exe时，他能够成功连接到数据库。当我们将二进制文件夹复制到共享驱动器并双击它时，程序在尝试连接到数据库时抛出错误消息（在SqlConnection.Open（）命令上）。

这曾经适用于他，但最近他被从一个提供对该共享的写访问权的全局组中删除。我在每种情况下都捕获了SQL身份验证连接字符串，当它工作时和失败时。它完全相同。由于我知道它在OpenConnection语句中完全失败（而不是试图写入日志文件），我不明白为什么不能对共享进行写访问权。

一个问题。是＆＃34;数据源=＆＃34;在连接字符串下面与＆＃34; Server =＆＃34;？

相同

ConnectionString='Data Source=ServerName;Initial Catalog=DbName;User ID=UserName;Password

或者这是＆＃34; DataSource＆＃34;用法期望在控制面板中创建ODBC / OLE DSN？我认为它与Server是同义词，因为我希望用户不要在他的机器上运行DSN（应用程序成功运行）并且我希望从共享位置运行时，共享上存在DSN服务器甚至无法访问（我在这里抓住稻草。）

************** Exception Text **************
System.Data.SqlClient.SqlException (0x80131904): The client was unable to establish a connection because of an error during connection initialization process before login. Possible causes include the following:  the client tried to connect to an unsupported version of SQL Server; the server was too busy to accept new connections; or there was a resource limitation (insufficient memory or maximum allowed connections) on the server. (provider: Named Pipes Provider, error: 0 - No process is on the other end of the pipe.) ---> System.ComponentModel.Win32Exception (0x80004005): No process is on the other end of the pipe
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParserStateObject.SNIWritePacket(SNIHandle handle, SNIPacket packet, UInt32& sniError, Boolean canAccumulate, Boolean callerHasConnectionLock)
   at System.Data.SqlClient.TdsParserStateObject.WriteSni(Boolean canAccumulate)
   at System.Data.SqlClient.TdsParserStateObject.WritePacket(Byte flushMode, Boolean canAccumulate)
   at System.Data.SqlClient.TdsParser.SendPreLoginHandshake(Byte[] instanceName, Boolean encrypt)
   at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover)
   at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover)
   at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout)
   at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.Open()

更新

我将连接字符串更改为使用IP地址

   ConnectionString='Server=IPADDRESS;Initial Catalog=DbName;User ID=UserName;Password

基于我在这里读到的内容：

Name resolution in connection string fails from network share

同样的结果。

Answer 1

我认为您要发布项目，您必须添加存储连接字符串的文件。根据您的连接字符串，您必须在其中使用提供程序名称。发布或制作exe时，请在项目中选择包含文件。

C＃Winforms从共享运行exe时SQLAuthentication失败，在本地运行

1 个答案: