What is Logging in ASP.NET Core? See Example

Logging in ASP.NET Core allows developers to capture application events, errors, and diagnostic information. It helps in troubleshooting, monitoring, and auditing applications. ASP.NET Core provides built-in logging providers like Console, Debug, EventSource, and third-party integrations.

Key Features:

• Capture and store application events and errors
• Supports multiple providers (Console, Debug, EventLog, etc.)
• Configurable log levels: Trace, Debug, Information, Warning, Error, Critical
• Integrates with dependency injection
• Useful for diagnostics, monitoring, and auditing

Example:
Configure logging in Program.cs:

var builder = WebApplication.CreateBuilder(args);
builder.Logging.ClearProviders();
builder.Logging.AddConsole();
builder.Logging.AddDebug();

var app = builder.Build();
app.MapGet("/", (ILogger<Program> logger) =>
{
    logger.LogInformation("Hello Logging in ASP.NET Core!");
    return "Check the console for logs.";
});

app.Run();

Logging in ASP.NET Core provides insights into app behavior, helps identify issues, and improves maintainability.

Citations:

• Learn more on Savanka
• Official ASP.NET Core Documentation