c# - Why doesn't my AppDomain.CurrentDomain.UnhandledException event always fire? -


i have windows service program running in release mode runs 24/7 makes in-process com calls c++ library , crashes log4net log call in appdomain.currentdomain.unhandledexception event doesn’t fire.

instead process terminates , eventlog log message written … what’s strange again code doesn’t have eventlog.writeentry calls.

can me figure out why appdomain.currentdomain.unhandledexception not firing in cases?

thanks in advance

event log message:

eventtype clr20r3, p1 programname.exe, p2 0.0.0.0, p3 4d5bd49f, p4 mscorlib, p5 2.0.0.0, p6 4a7cd8f7, p7 41b3, p8 a3, p9 system.argumentoutofrange, p10 nil.

the entry in event log written windows, , telling throwing argumentoutofrangeexception. without seeing code contained in event handler appdomain.currentdomain.unhandledexception, it's difficult why, it's 1 of following occuring:

  • your exception handler throwing argumentoutofrangeexception
  • you have multiple appdomain's in process , it's 1 of other ones throwing argument out of range exception.

the former more likely. review code in exception handler very carefully , anywhere bad argument passed. try wrapping entire exception handler in try`catch` logs exception occurs within exception handler event log , see if further information, such stack trace.

also, make sure you're deploying debug symbols (.pdb files) application stack traces logged give line numbers refer to.


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