With the release of 3.2.0 a new fluent interface has also been introduced. This feature simplifies writing complex logging statements and can be extended with extension methods.
varlogger=LogManager.GetCurrentClassLogger();logger.Info().Message("This is a test fluent message '{0}'.",DateTime.Now.Ticks).Property("Test","InfoWrite").Write();To start with the fluent interface:
- Import the namespace
NLog.Fluent - Create a
Loggeras regular - Start the fluent interface with
logger.Log(LogLevel...),logger.Debug(),logger.Error()etc. - Use the fluent interface
- Finish the chain with
.Write()
Full example
usingSystem;usingNLog;usingNLog.Fluent;classProgram{voidTest(){varlogger=LogManager.GetCurrentClassLogger();try{//ex 1logger.Info().Property("id",123).Property("category","test").Write();DoCrash();}catch(Exceptionex){//ex 2logger.Log(LogLevel.Error).Exception(ex).Message("log a message with {0} parameter",1).Write();throw;}}privatestaticvoidDoCrash(){//..}}