Mastering ASP.NET Web API

Logging level

The log information that is written will have a different level based on the severity of the information being written. The following table depicts the log level in ASP.NET Core in ascending order:

Log level	Written as	Remarks
Trace = 0	_logger.LogTrace (...)	Part of developer debugging. Can include sensitive information.
Debug = 1	_logger.LogDebug (...)	Part of developer debugging. Used most of the time.
Information = 2	_logger.LogInformation(...)	Flow of application can be logged here. Not meant for debugging.
Warning = 3	_logger.LogWarning (...)	For unexpected events. For example, data doesn't match business rules.
Error = 4	_logger.LogError (...)	Unhandled events of application; ...