c# - Windows Forms Threads are losing their culture -


we have .net 3.5 multi-threaded windows forms application. is launching 4-5 background workers/ async calls retrieve data. 1 in 10 times, 1 of threads throws following error. error null exception instead same exact call stack. have tracked issue down thread somehow losing cultureinfo. else ran this?

system.threading.synchronizationlockexception: object synchronization method called unsynchronized block of code.    @ system.globalization.culturetablerecord.getculturetablerecord(string name, boolean useuseroverride)    @ system.globalization.culturetablerecord.getculturetablerecord(int32 cultureid, boolean useuseroverride)    @ system.globalization.cultureinfo..ctor(int32 culture, boolean useuseroverride)    @ system.globalization.cultureinfo.getculturebylcidorname(int32 preferlcid, string fallbacktostring)    @ system.globalization.cultureinfo.inituserdefaultuiculture()    @ system.globalization.cultureinfo.get_userdefaultuiculture()    @ system.threading.thread.get_currentuiculture()    @ system.resources.resourcemanager.getstring(string name, cultureinfo culture)    @ system.environment.resourcehelper.getresourcestringcode(object userdatain)    @ system.environment.getresourcefromdefault(string key)    @ system.diagnostics.stacktrace.tostring(traceformat traceformat)    @ system.environment.getstacktrace(exception e, boolean needfileinfo)    @ system.io.streamwriter.init(stream stream, encoding encoding, int32 buffersize)    @ system.io.streamwriter..ctor(stream stream, encoding encoding, int32 buffersize)    @ system.web.services.protocols.soaphttpclientprotocol.getwriterformessage(soapclientmessage message, int32 buffersize)    @ system.web.services.protocols.soaphttpclientprotocol.serialize(soapclientmessage message)    @ system.web.services.protocols.soaphttpclientprotocol.invoke(string methodname, object[] parameters)

try playing default culture entire domain using cultureinfo.defaultthreadcurrentculture and/or cultureinfo.defaultthreadcurrentuiculture , see if helps. in all, you'll able ensure whether it's related thread's culture

upd: specific exception may thrown when using sync methods lock, monitor, etc on value types, calls sync methods will box value, creating new 1 every time. doubt such serios bug in framework.

can check synchronization code?

upd2: ok, let's try debug.

after that, there high chance workaround/solution problem


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