Ryan Foster
All Posts by Ryan Foster
Build Single Sign-on for Your ASP.NET MVC App
So you’re interested in using single sign-on (SSO) for your ASP.NET MVC apps? You’ve come to the right place. There are lots of reasons for using SSO for custom apps owned by the same organization. Better user experience. Less development time. Improved security. Those are all great reasons. Another thing I love about SSO is that it can enable upgrading a large codebase a piece at a time instead of all at once. How so?...
Secure Your ASP.NET Core App with OAuth 2.0
Do you ever wish you had a virtual scrap of paper you could use to write notes in the cloud? I’ll show you how to build a simple ASP.NET Core app to keep track of your notes, plus how to use .NET Core’s OAuth 2 authentication middleware to secure access to your app so your personal notes are kept private. Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and...
Decode JWTs in C# for Authorization
There are two main steps in securing an application: authentication and authorization. Authentication is easy enough. A user enters a username and password (maybe even a second factor) to prove (authenticate) who they are. Authorization is a little less cut and dried. There are lots of factors that go into what an authenticated user is authorized to do. First, you need some information about the user that just authenticated. Many modern web apps use JSON...
Build a CRUD App with ASP.NET Core and TypeScript
There are a lot of things for .NET developers to love about TypeScript. It has strong typing that .NET Developers are used to and the ability to use the latest JavaScript features. Since it is just a superset of JavaScript, the cost to switch is almost nothing. Getting Visual Studio to transpile the TypeScript when it builds your ASP.NET Core app is pretty simple as well. In this tutorial, you will build an ASP.NET Core...
Build a REST API with ASP.NET Web API
Do you need to build a REST API with ASP.NET Web API? If you’re creating a new API, you should probably create it with .NET Core. But it’s not always possible to use the latest and greatest technologies. If you’re working in an existing ASP.NET 4.x app, or the organization you work for hasn’t approved the use of .NET Core yet, you may need to build an API in .NET Framework 4.x. That is what...