“/”应用程序中的服务器错误。

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[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.ExecuteNonQuery(DbCommand command) +39
   PowerEasy.Framework.Database.DBHelper.ExecuteNonQuery(CommandType commandType, String strCommand, Parameters cmdParams) +180
   PowerEasy.Framework.Logging.LogManager.Add(LogInfo logInfo) +59
   PowerEasy.Framework.Logging.DBLog.Add(LogInfo info) +43
   PowerEasy.TemplateEngine.XpowerEngine.CustomLabelParser.LogLabelTransformException() +407
   PowerEasy.TemplateEngine.XpowerEngine.CustomLabelParser.Parse() +1149