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Roland Guijt

Roland Guijt

Microsoft MVP, Pluralsight author, ASP.NET insider

Utrecht, The Netherlands


Roland is a Microsoft MVP, ASP.NET Insider and Pluralsight author enjoying a constant curiosity around new techniques in software development. His focus is on all things .NET and browser technologies.
As a long-time trainer and speaker, he led many courses on these topics and spoke about these topics at manyinternational conferences.


Area of Expertise

  • Information & Communications Technology


  • .NET
  • .NET 5
  • ASP .NET Core
  • React.js
  • .net 6
  • .NET Backend
  • .NET (Core) development
  • C#.Net
  • .NET Frontend
  • .NET Patterns & Practices
  • ReactJS
  • .net 8
  • OpenID Connect
  • OAuth2
  • Identityserver

Don't Trust the Browser: Secure SPAs with BFF

OpenIdConnect and OAuth are the industry standards to protect both frontend and backends applications with tokens.
Sending tokens to the browser is like trusting a bunch of lions to keep a cow safe. So why do we do it in our Single Page Applications using the implicit flow for example?


BFF or Backend For Frontend solves this problem. Come and find out how this works using ASP.NET Core on the server and React on the browser side. If you're not into ASP.NET Core: come anyways because the concepts are applicable to any technology.

Real-time Web Applications with ASP.NET Core SignalR

A real-time web application is actively sending data from server to browser or other client. You already know this principle from email browser clients that pop up new emails as they come in.

In this session you'll learn to apply this technique to your ASP.NET Core application. I'll show you how to build real-time functionality into every ASP.NET Core application by diving into the code of a demo application showing you the server- and client-side.
And when your app's ready there are a couple of things you should know when you want to scale out a SignalR app. You could do the plumbing yourself or using the new Azure SignalR service.

After this session you're ready to write and deploy your ASP.NET Core SignalR application.

Getting a gRIP on ASP.NET Core gRPC

What's that in the sky? Is it a plane? Is it WCF? No it's better. It's gRPC that's now natively supported in ASP.NET Core. It uses the same underlying RPC principle of the good ol' WCF. It's just implemented better, it's more efficient and it's is way, way faster. That make it very suitable for communication between microservices for example.

In this session I'm talking about what gRPC is but also how you can implement it right away in any ASP.NET Core application. I'll not only do that by building a gRPC endpoint into an existing ASP.NET Core application, but you'll also learn that on the consuming side there are also a lot to like.

You'll leave with the ability to create and consume APIs on steroids.

Blazor: Blazing into the Future of Web Development

You're starting a long-term relationship with Blazor in this full-day workshop. Throughout it you'll build components for existing applications but not before you get a clear explanation of each step we take.
Here's what you'll learn:

- What is Blazor?
- The different hosting models.
- Writing a basic component
- Understanding how a component is processed
- Databinding
- Handling and creating events
- Advanced component capabilities such as cascading values, attribute splatting and component references
- Creating highly reusable component templates

Blazor Components Deep Dive

Met Blazor components kun je veel meer dan wat je in "Getting started" sessies en blog posts ziet.
In deze sessie zoomen we specifiek in op het Blazor component zelf. Ik ga er vanuit dat je weet wat Blazor is. We kijken onder meer naar hoe event propagation, child content, attribute splatting en een chained bind werkt en je zult leren hoe templated components werken.
Na deze sessie kun je veel meer dan alleen een "Hello world" applicatie maken in Blazor.

Authentication Your Own Way

An identity provider enables you to do centralized authentication with single sign-on using industry standards. Cloud services are great as long as you don't need customization beyond of what it offers. This is where creating your own with IdentityServer comes in.
I'll show you the ins and outs of creating the service and how to deploy it to Azure.
But not before I make sure you understand the terminology around it. Once you get the basics we'll get into beyond the basics mode and I'll show you some of the other marvelous things that a custom identity provider brings.
After this session you're ready to implement a identity provider in ASP.NET Core that supports authentication across your organization.

ASP.NET Core Minimal APIs and React: A Winning Team

There's a lot of smartness built into minimal APIs in ASP.NET Core which allows you to create straightforward, maintainable REST APIs while maintaining all the goodness of ASP.NET Core.

After explaining the concepts of minimal APIs, I'm showing you how such an API sticks together and I'll show you a frontend that makes the most out of it using the immensely popular React, that can use React-Query to talk to our minimal API in a very smart way. without having to worry about things like caching and refreshing data anymore!

DevSum 2023 Sessionize Event

May 2023 Stockholm, Sweden

Techorama 2023 Belgium Sessionize Event

May 2023 Antwerpen, Belgium

DevSum 2022 Sessionize Event

May 2022 Stockholm, Sweden

NDC Porto 2022 Sessionize Event

April 2022 Porto, Portugal

Roland Guijt

Microsoft MVP, Pluralsight author, ASP.NET insider

Utrecht, The Netherlands


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