ASPNET Configuration Options — Managing Application Settings

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

ASP.NET Core's configuration system provides hierarchical, environment-aware settings from multiple sources including JSON files, environment variables, and cloud providers.

public class ScanOptions
{
    public const string SectionName = "ScanService";
    public int MaxFileSize { get; set; } = 10485760;
    public int TimeoutSeconds { get; set; } = 30;
    public string DefaultScanType { get; set; } = "quick";
}

// Registration with validation
// builder.Services.AddOptions<ScanOptions>()
//    .Bind(builder.Configuration.GetSection(ScanOptions.SectionName))
//    .ValidateDataAnnotations()
//    .ValidateOnStart();

The options pattern provides strongly-typed access to configuration with built-in validation and reload support.