[SqlException (0x80131904): 在与 SQL Server 建立连接时出现与网络相关的或特定于实例的错误。未找到或无法访问服务器。请验证实例名称是否正确并且 SQL Server 已配置为允许远程连接。 (provider: TCP 提供程序, error: 0 - 由于目标计算机积极拒绝,无法连接。)]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +578
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +88
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +6342711
System.Data.SqlClient.SqlConnection.Open() +258
Microsoft.Practices.EnterpriseLibrary.Data.Database.GetNewOpenConnection() +242
Microsoft.Practices.EnterpriseLibrary.Data.Database.GetOpenConnection(Boolean disposeInnerConnection) +74
Microsoft.Practices.EnterpriseLibrary.Data.Database.LoadDataSet(DbCommand command, DataSet dataSet, String[] tableNames) +41
Microsoft.Practices.EnterpriseLibrary.Data.Database.ExecuteDataSet(DbCommand command) +115
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