c# - ASP.NET WebApi IExceptionLogger doesn't catch exceptions -

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i'm trying setup global exception handler outlined here: web api global error handling. i"ve setup case exception gets thrown within controller constructor. exception isn't getting logged. instead webapi returning exception , full stack trace calling client json message.

i don't know if matters, controllers actions using async / await this:

[httpget, route("getlocationnames")] public async task<ienumerable<string>> get() {     return await adapter.getlocationnames(); }

i have following implementation:

using log4net; using system.threading.tasks; using system.web.http.exceptionhandling;  namespace warehouse.management.api {     public class log4netexceptionlogger : exceptionlogger     {         private ilog log = logmanager.getlogger(typeof(log4netexceptionlogger));          public async override task logasync(exceptionloggercontext context, system.threading.cancellationtoken cancellationtoken)         {             log.error("an unhandled exception occurred.", context.exception);             await base.logasync(context, cancellationtoken);         }          public override void log(exceptionloggercontext context)         {             log.error("an unhandled exception occurred.", context.exception);             base.log(context);         }          public override bool shouldlog(exceptionloggercontext context)         {             return base.shouldlog(context);         }     } }

and i'm registering this:

using owin; using system.web.http; using system.web.http.exceptionhandling;  namespace warehouse.management.api.config {     public static class webapiconfig     {          public static iappbuilder registerapiconfig(this iappbuilder app, httpconfiguration config)         {             config.maphttpattributeroutes();             config.services.add(typeof(iexceptionlogger), new log4netexceptionlogger());             return app;         }     } }

and here's packages.conf:

<?xml version="1.0" encoding="utf-8"?> <packages>     <package id="log4net" version="2.0.3" targetframework="net45" />     <package id="microsoft.aspnet.webapi.client" version="5.1.2" targetframework="net45" />     <package id="microsoft.aspnet.webapi.core" version="5.1.2" targetframework="net45" />     <package id="microsoft.aspnet.webapi.owin" version="5.1.2" targetframework="net45" />     <package id="microsoft.aspnet.webapi.webhost" version="4.0.20505.0" targetframework="net45" />     <package id="microsoft.owin" version="2.1.0" targetframework="net45" />     <package id="microsoft.web.infrastructure" version="1.0.0.0" targetframework="net45" />     <package id="newtonsoft.json" version="4.5.11" targetframework="net45" />     <package id="owin" version="1.0" targetframework="net45" />     <package id="unity" version="3.5.1404.0" targetframework="net45" />     <package id="unity.aspnet.webapi" version="3.5.1404.0" targetframework="net45" />     <package id="webactivatorex" version="2.0" targetframework="net45" /> </packages>

turns out ordering. in startup class (not shown) moved call registerapiconfig method (above, in op) before call usewebapi , works.


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