Asp.Net 5 (core) RC1: How to log to file (rolling file logging) [DNX Core 5 compatible solution]?

Question

How can I log to file in Asp.Net 5 RC1? I couldn't find any solution with Microsoft.Extensions.Logging. Is there any solution which is compatible with .Net Core 5 (DNX Core 5.0)? I also was trying to use Serilog but Serilog doesn't support core 5 yet.

Answer 1

To use Serilog in your ASP.NET 5 RC1 project, add the following dependencies in your project.json file:

"Serilog.Extensions.Logging": "1.0.0-rc1-final-10092",
"Serilog.Sinks.RollingFile": "2.0.0-beta-465"

Create the logger in the Startup constructor:

public Startup(IApplicationEnvironment appEnv)
{
    Log.Logger = new LoggerConfiguration()
        .MinimumLevel.Debug()
        .WriteTo.RollingFile(Path.Combine(appEnv.ApplicationBasePath, "log-{Date}.txt"))
        .CreateLogger();
}

and add Serilog in the Startup.Configure method:

public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
{
    loggerFactory.AddSerilog();

Answer 2

Serilog.Extensions.Logging.File package is an easy way to add file logging to ASP.Net Core application (.NET Core 2.0 is supported in the latest version, which is pre-release at the moment).

• Plugs in as ASP.NET Core logging provider
• Provides a subset of Serilog functionality, specifically for logging to the file system.
• Automatically pulls other Serilog packages as needed.

https://github.com/serilog/serilog-extensions-logging-file

https://www.nuget.org/packages/Serilog.Extensions.Logging.File