File Logging in .NET Console Apps with Serilog

Goal

Set up basic file logging in a .NET Console application using Serilog.

Setup

Install Serilog:

dotnet add package Serilog

Implementation

Configure the logger in your Main method:

static async Task Main(string[] args)
{
    Log.Logger = new LoggerConfiguration()
        .Enrich.FromLogContext()
        .WriteTo.Console()
        .WriteTo.File("logs/log.json")
        .CreateLogger();

    Log.Information("Running..");
}

This configuration:

• Writes logs to both console and logs/log.json
• Enriches log events with contextual information via FromLogContext()