dotnet-csharp-configuration

Manage .NET configuration and feature flags with Microsoft.Extensions.Configuration.

71|10|Updated Feb 11, 2026

Search Tags:#configuration #c##.net #feature flags #user secrets #options pattern #appsettings

Ready to run

npx skills add https://github.com/wshaddix/dotnet-skills --skill dotnet-csharp-configuration-wshaddix

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: dotnet-csharp-configuration
Source: https://github.com/wshaddix/dotnet-skills/tree/main/skills/dotnet-csharp-configuration
Command: npx skills add https://github.com/wshaddix/dotnet-skills --skill dotnet-csharp-configuration-wshaddix

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill simplifies the management of application settings and dynamic feature toggles in .NET applications, ensuring robust and flexible configuration.

Core Features & Use Cases

Options Pattern: Bind configuration sections to strongly-typed classes for safe and maintainable access.
Configuration Sources: Understand and leverage appsettings.json, environment variables, user secrets, and command-line arguments with correct precedence.
Feature Flags: Implement and manage feature flags using Microsoft.FeatureManagement for A/B testing and phased rollouts.
Use Case: Configure database connection strings, API keys, and feature flags that can be toggled without redeploying your application.

Quick Start

Configure the 'Smtp' section in your appsettings.json file and bind it to the SmtpOptions class.

Frequently Asked Questions about dotnet-csharp-configuration

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I bind appsettings.json sections to strongly-typed classes in .NET?▼

Use the Options pattern to bind appsettings.json configuration sections to strongly-typed classes. This ensures safe, maintainable access to application settings like database connection strings and API keys via IOptions, IOptionsSnapshot, or IOptionsMonitor.

How do I implement feature flags for phased rollouts in a .NET application?▼

Implement feature flags in .NET using Microsoft.FeatureManagement. This enables dynamic feature toggles for A/B testing and phased rollouts, allowing you to toggle features without redeploying your application by applying custom filters.

What is the correct configuration source precedence in .NET?▼

.NET configuration source precedence follows a specific order when merging appsettings.json, environment variables, user secrets, and command-line arguments. Understanding this hierarchy ensures the correct settings override others in different deployment environments.

When should I use IOptionsSnapshot instead of IOptions for .NET configuration?▼

IOptionsSnapshot is used when configuration needs to be recalculated per request scope, whereas standard IOptions is singleton. IOptionsMonitor is used for real-time configuration change detection, allowing reactive updates without application restarts.

Can I use user secrets to manage API keys in my local .NET development environment?▼

Yes, user secrets securely manage sensitive data like API keys during local .NET development. This prevents storing confidential credentials in source control by keeping them separate from your appsettings.json files.

Does .NET configuration support custom feature flag filters?▼

Yes, Microsoft.FeatureManagement supports custom feature flag filters. You can implement tailored filtering logic to conditionally enable features based on specific parameters, providing granular control over your application's behavior.