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System.Data.OleDb.OleDbException (0x80004005): 未指定的错误 在 System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) 在 System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) 在 System.Data.ProviderBase.DbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) 在 System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) 在 System.Data.OleDb.OleDbConnection.Open() 在 Productl.OpenDB() 位置 d:\wwwroot\alert\web\Productl.aspx.cs:行号 44System.InvalidOperationException: ExecuteReader 要求已打开且可用的 Connection。连接的当前状态为已关闭。 在 System.Data.OleDb.OleDbConnection.CheckStateOpen(String method) 在 System.Data.OleDb.OleDbCommand.ValidateConnection(String method) 在 System.Data.OleDb.OleDbCommand.ValidateConnectionAndTransaction(String method) 在 System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) 在 System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) 在 System.Data.OleDb.OleDbCommand.ExecuteReader() 在 Productl.get_name() 位置 d:\wwwroot\alert\web\Productl.aspx.cs:行号 66System.Data.OleDb.OleDbException (0x80004005): 未指定的错误 在 System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) 在 System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) 在 System.Data.ProviderBase.DbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) 在 System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) 在 System.Data.OleDb.OleDbConnection.Open() 在 Productl.OpenDB() 位置 d:\wwwroot\alert\web\Productl.aspx.cs:行号 44System.InvalidOperationException: ExecuteReader 要求已打开且可用的 Connection。连接的当前状态为已关闭。 在 System.Data.OleDb.OleDbConnection.CheckStateOpen(String method) 在 System.Data.OleDb.OleDbCommand.ValidateConnection(String method) 在 System.Data.OleDb.OleDbCommand.ValidateConnectionAndTransaction(String method) 在 System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) 在 System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) 在 System.Data.OleDb.OleDbCommand.ExecuteReader() 在 Productl.get_name() 位置 d:\wwwroot\alert\web\Productl.aspx.cs:行号 66System.Data.OleDb.OleDbException (0x80004005): 未指定的错误 在 System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) 在 System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) 在 System.Data.ProviderBase.DbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) 在 System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 在 System.Data.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) 在 System.Data.OleDb.OleDbConnection.Open() 在 Productl.OpenDB() 位置 d:\wwwroot\alert\web\Productl.aspx.cs:行号 44System.InvalidOperationException: ExecuteReader 要求已打开且可用的 Connection。连接的当前状态为已关闭。 在 System.Data.OleDb.OleDbConnection.CheckStateOpen(String method) 在 System.Data.OleDb.OleDbCommand.ValidateConnection(String method) 在 System.Data.OleDb.OleDbCommand.ValidateConnectionAndTransaction(String method) 在 System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) 在 System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) 在 System.Data.OleDb.OleDbCommand.ExecuteReader() 在 Productl.get_name() 位置 d:\wwwroot\alert\web\Productl.aspx.cs:行号 66