An unhandled exception of type 'System.NullReferenceException' - FbCommand
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Key: DNET-704
URL: http://tracker.firebirdsql.org/browse/DNET-704
Project: .NET Data provider
Issue Type: Bug
Components: ADO.NET Provider
Affects Versions: 5.1.1.0, 2.7.7
Environment: Visual Studio 2012 / Windows 10/11/ Server 2012 / .Net
Framework 4.0 / 4.5
Reporter: Marcos R. Weimer
Assignee: Jiri Cincura
Exception: An unhandled exception of type 'System.NullReferenceException'
occurred in FirebirdSql.Data.FirebirdClient.dll
in RollbackImplicitTransaction (line 764):
int transactionCount = Connection.InnerConnection.Database.TransactionCount;
Connection = has connection value
InnerConnection = null
Sporadic error, did not identify the cause of the problem.
Trace:
<TraceRecord
xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord";
Severity="Critical"><TraceIdentifier>http://msdn.microsoft.com/TraceCodes/System/ActivityTracing/2004/07/Reliability/Exception/Unhandled</TraceIdentifier><Description>Exceção
não
tratada</Description><AppDomain>UltraNFe.vshost.exe</AppDomain><Exception><ExceptionType>System.NullReferenceException,
mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089</ExceptionType><Message>Referência de objeto
não definida para uma instância de um objeto.</Message><StackTrace> em
FirebirdSql.Data.FirebirdClient.FbCommand.RollbackImplicitTransaction() na
C:\Users\Jiri\Documents\devel\NETProvider\working\Provider\src\FirebirdSql.Data.FirebirdClient\FirebirdClient\FbCommand.cs:linha
768
em FirebirdSql.Data.FirebirdClient.FbCommand.Release() na
C:\Users\Jiri\Documents\devel\NETProvider\working\Provider\src\FirebirdSql.Data.FirebirdClient\FirebirdClient\FbCommand.cs:linha
806
em FirebirdSql.Data.FirebirdClient.FbCommand.Dispose(Boolean disposing) na
C:\Users\Jiri\Documents\devel\NETProvider\working\Provider\src\FirebirdSql.Data.FirebirdClient\FirebirdClient\FbCommand.cs:linha
372
em
System.ComponentModel.Component.Finalize()</StackTrace><ExceptionString>System.NullReferenceException:
Referência de objeto não definida para uma instância de um objeto.
em FirebirdSql.Data.FirebirdClient.FbCommand.RollbackImplicitTransaction()
na
C:\Users\Jiri\Documents\devel\NETProvider\working\Provider\src\FirebirdSql.Data.FirebirdClient\FirebirdClient\FbCommand.cs:linha
768
em FirebirdSql.Data.FirebirdClient.FbCommand.Release() na
C:\Users\Jiri\Documents\devel\NETProvider\working\Provider\src\FirebirdSql.Data.FirebirdClient\FirebirdClient\FbCommand.cs:linha
806
em FirebirdSql.Data.FirebirdClient.FbCommand.Dispose(Boolean disposing) na
C:\Users\Jiri\Documents\devel\NETProvider\working\Provider\src\FirebirdSql.Data.FirebirdClient\FirebirdClient\FbCommand.cs:linha
372
em
System.ComponentModel.Component.Finalize()</ExceptionString></Exception></TraceRecord>
sorry for my English
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