- Install the nuget package or reference the project into your asp.net core application.
- Add the AddLog4Net() call into your Configure method of the Startup.cs class.
using Microsoft.Extensions.Logging;
public class Startup
{
//...
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
//...
loggerFactory.AddLog4Net(); // << Add this line
app.UseMvc();
//...
}
}- Add a log4net.config file with the content:
<?xml version="1.0" encoding="utf-8"?>
<log4net>
<appender name="RollingFile" type="log4net.Appender.FileAppender">
<file value="C:\Temp\app.log" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-5p %d{hh:mm:ss} %message%newline" />
</layout>
</appender>
<root>
<level value="ALL" />
<appender-ref ref="RollingFile" />
</root>
</log4net>-
Then log4net.config->Propertise->Copy to Output Directory->Change to Copy if newer
-
Add a HomeController.cs file with the content:
public class HomeController
{
//...
public HomeController(ILoggerFactory loggerFactory)
{
var logger = loggerFactory.CreateLogger("RollingFile");
logger.LogCritical("Hello");
#if DEBUG
logger.LogDebug("This is a debug log");
#endif
}
//...
}- Go to (c:\Temp\app.log):
