ASPNET Logging with Serilog — Structured Logging for .NET Applications

DodaTech Updated 2026-06-28 1 min read

In this tutorial, you'll learn about ASPNET Logging Serilog. We cover key concepts, practical examples, and best practices to help you understand and apply this topic effectively.

Serilog provides structured logging for ASP.NET Core applications, enabling queryable log data with enrichers, multiple sinks, and seamless integration with the .NET logging abstraction.

// Program.cs configuration
Log.Logger = new LoggerConfiguration()
    .ReadFrom.Configuration(builder.Configuration)
    .Enrich.WithCorrelationId()
    .Enrich.WithEnvironmentName()
    .WriteTo.Console(outputTemplate:
        "[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj}{NewLine}{Exception}")
    .WriteTo.File("logs/api-.log", rollingInterval: RollingInterval.Day)
    .CreateLogger();

builder.Host.UseSerilog();

// Usage in controller
public class ScanController : ControllerBase
{
    private readonly ILogger<ScanController> _logger;
    public ScanController(ILogger<ScanController> logger) => _logger = logger;

    public IActionResult Scan()
    {
        _logger.LogInformation("Scan initiated for file {FileName}", fileName);
    }
}

Structured logging transforms log data from text to queryable events, enabling powerful analysis and debugging.

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