Articles tagged csharp-9
Secure Your .NET 6 Web API
.NET 6 is here and many of us are making preparations to update .NET 5 codebases to .NET 6. As part of this review, today you will learn how to implement the client credentials flow in ASP.NET Core Web API. Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written....
Managing Multiple .NET Microservices with API Federation
For large enterprise companies, boundaries around each team are crucial for maintaining systems that are owned by software engineers. This is accomplished by allowing individual teams to own their systems and expose them via APIs. You also need to keep certain types of cross-cutting concerns centralized, like select security controls, logging, and routing. If you don’t, every API across different teams has to implement common controls like rate-limiting, logging, and authentication. This can lead to...
Comparison of Dependency Injection in .NET
Why you should care about dependency injection Dependency injection is a tried and proven design pattern for producing code that is testable, readable, and reusable. This is achieved by creating (or increasing) a separation of concerns, where each class has a dedicated area of responsibility. Dependency injection is just one design pattern used to achieve inversion of control in which the calling code, or client, has no knowledge of the inner workings of the dependency,...
Secure Your .NET 5 Blazor Server App with MFA
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Introduction to Server Blazor apps Blazor is an exciting new technology from Microsoft that will allow developers to bring C# to clients. Server and...
How to Write Cleaner, Safer Code with SonarQube, Docker and .NET Core
When it comes to code quality and code security, SonarQube is your teammate! This analysis tool is pretty straightforward to use, especially with some help from Docker. In this post, I’ll show you how to run a Docker container with SonarQube to analyze the code of a simple ASP.NET Core 3.0 application. Code analysis is a critical component of app development because it can identify security issues and other tricky bugs that might be overlooked...
How to Toggle Functionality in C# with Feature Flags
Toggling functionality using feature flags in .NET Core apps is quite straightforward, especially with a neat little feature flag management service. In this post, I’ll walk you through how to build a simple web application using Okta for user authentication and how to use ConfigCat to manage and access feature flags. What Are Feature Flags? Feature flags (aka. feature toggles) are a relatively new software development technique that enables development teams to turn features on...
A Quick Guide to Elasticsearch for .NET
Implementing search functionality in your .NET Core apps doesn’t have to be hard! Using Elasticsearch makes it easy to develop fast, searchable apps. In this post, I’ll walk you through building a simple web application using Okta (for user authentication), Elastic Cloud (the official Elasticsearch hosting provider), and the fabulous Elasticsearch NEST SDK. Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved...
Update App Secrets with Jenkins CI and .NET Core
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Introduction Jenkins is a free and open-source application that makes it easy to create CI/CD pipelines in almost any language or environment. Jenkins features...
Developer's Cheat Sheet for C# 9.0
Introduction to C# 9 (and a bit of C# 8, too) Let’s start with a background on how C# 9 got here (implementation examples start in the next section). The last few years in computer science, we’ve observed the rising popularity of the #FreeLunchOver concept. The idea is that CPU technology, based on electrical signals and Von Neumann architecture, has reached its intrinsic limits. As long as integrated circuits were slower than light, we knew...