While, this is certainly a problem, it SHOULD not be the issue already reported, because those reports were against log4Net running on the 2.0 CLR instead of the 4.0 CLR.
I have done some research this morning, and have found a couple of articles suggesting "fixes", but I do not yet understand the ramifications. This is all to do with a new code security model created in 4.0 and it is going to take time to understand. If anyone reading this is a 4.0 code security model guru, then please look at http://connect.microsoft.com/VisualStudio/feedback/details/464751/inheri tance-security-rules-violated-while-overriding-member and throw out an opinion. The other solution seems to involve marking the calling code, but I have not figured it all out as yet. ---------------------------------------------------------------------- Roy Chastain -----Original Message----- From: Stefan Bodewig [mailto:bode...@apache.org] Sent: Thursday, August 18, 2011 23:41 To: log4net-dev@logging.apache.org Subject: ADO.NET Appender and FX 4.0 Hi, Roy said in some thread people had reported problems with the ADO.NET appender when running on .NET 4.0. I managed to get to the point where NAnt at least tries to run the unit tests on 4.0 and this is what I see: Unhandled Exception: System.TypeLoadException: Inheritance security rules violated while overriding member: 'log4net.Core.LoggingEvent.GetObjectData(System.Runtime.Serialization.Se rializationInfo, System.Runtime.Serialization.StreamingContext)'. Security accessibility of the overriding method must match the security accessibility of the method being overriden. at log4net.Appender.BufferingAppenderSkeleton.Flush(Boolean flushLossyBuffer) at log4net.Appender.BufferingAppenderSkeleton.OnClose() in c:\OSS\log4net\src\Appender\BufferingAppenderSkeleton.cs:line 411 at log4net.Appender.AdoNetAppender.OnClose() in c:\OSS\log4net\src\Appender\AdoNetAppender.cs:line 433 at log4net.Appender.AppenderSkeleton.Close() in c:\OSS\log4net\src\Appender\AppenderSkeleton.cs:line 243 at log4net.Appender.AppenderSkeleton.Finalize() in c:\OSS\log4net\src\Appender\AppenderSkeleton.cs:line 83 which may or may not be related. I do not see this when I tell NAnt to use the .NET FX 2.0 (via Nant -t:net-2.0) - I "only" get the ten unit test failures I already raised in JIRA. Stefan
