What is SEHException?

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One way you get this exception is if unmanaged code does an OS RaiseException() or causes a fault.  If that exception is propagated up the stack to managed code, we will try to map it to a managed exception.  For example, STATUS_NO_MEMORY maps to OutOfMemoryException and STATUS_ACCESS_VIOLATION maps to NullReferenceException.

 

For all the exception codes that don’t have a predefined mapping, we wrap them up into SEHException.