ASP.NET Core Archives - Jonathan Crozier

Treat Blazor component Warnings as Errors: Found markup element with unexpected name

When developing Blazor applications, certain issues with component markup are flagged as warnings by default that can have a substantial impact if undetected. One of these cases is warning code RZ10012, which is raised when a Blazor component cannot be found due to a missing using directive within the Razor file. In my opinion, I…

Enable ahead-of-time (AOT) compilation for Blazor WebAssembly

InWeb

Blazor WebAssembly facilitates the development of SPAs (Single-page applications) that run in the browser using C# instead of JavaScript as the primary programming language. Executing C# code in the browser is a rather neat trick, made possible via the revolutionary WebAssembly technology which is an open web standard. However, the default mechanism employed by Blazor…

.NET 8 Blazor MSAL Error – There was an error trying to log you in: ‘”undefined” is not valid JSON’

InWeb

When developing a Blazor WebAssembly application that uses the MSAL (Microsoft Authentication Library) for .NET packages, you may encounter an error message similar to the following after trying to log in. There was an error trying to log you in: ‘”undefined” is not valid JSON’ The above error message is usually noticed after upgrading a…

Communicating with ASP.NET Core hosted services from API endpoints using Channels

InAPIs Web

Hosted services are a powerful .NET feature, providing a robust mechanism for executing long-running background tasks in different types of applications. Given the flexible nature of .NET, such applications could be running on client devices, on-premise servers, or the cloud, depending on the particular use case. When it comes to ASP.NET Core, hosted services are…

ASP.NET Core runtime exception: Could not load type ‘Microsoft.IdentityModel.Json.JsonConvert’

InAPIs Web

When developing ASP.NET Core web applications, it is common to interact with JWTs (JSON Web Tokens). Quite often you will want to validate JWTs and possibly even generate your own JWTs to secure API endpoints. However, it’s not always plain sailing when it comes to software development. After updating certain Microsoft NuGet packages to newer…

Exploring ASP.NET Core Minimal APIs: Should I use them in production?

InAPIs

If you’ve been keeping up to date with what’s new in the .NET ecosystem over the last year or two, you’ll probably already be aware of the Minimal APIs feature that debuted in ASP.NET 6.0 back in 2021. However, since Minimal APIs are still a relatively new concept, perhaps you haven’t considered using them in…

Why you can’t debug your Blazor WebAssembly application

InWeb

You’ve had enough. Yes, you’ve finally decided that this is the last time you’ll use a Console.WriteLine method call to troubleshoot one of your Blazor WebAssembly components because you can’t get any debug breakpoints to hit! Debugging is an essential part of software development and when it doesn’t work, it can be frustrating. This is…

What to do when emojis are not rendered correctly by ASP.NET Core web applications

InWeb

For better or worse emojis have become part of our everyday life, we use them to communicate our emotions and as a quick way to acknowledge our approval or disapproval as the case may be! 👍 Recently I came across what seemed to be a rather odd issue where an emoji was being used within…

Understanding the Blazor component lifecycle

InWeb

As a Blazor developer, it is essential to have a solid understanding of the lifecycle events that take place from the moment a Blazor component is created until it is eventually torn down. By gaining an understanding of the Blazor component lifecycle, you will be able to make your components more efficient and reduce the…

Implementing Blazor error boundaries

InWeb

If you’ve been working with Blazor for any length of time, it probably won’t be very long before you encounter the “yellow bar of death” which is displayed at the bottom of the browser window any time an unhandled exception occurs. Whenever this exception bar appears for Blazor Server apps, a page refresh is required…

Tag: ASP.NET Core

Treat Blazor component Warnings as Errors: Found markup element with unexpected name

Enable ahead-of-time (AOT) compilation for Blazor WebAssembly

.NET 8 Blazor MSAL Error – There was an error trying to log you in: ‘”undefined” is not valid JSON’

Communicating with ASP.NET Core hosted services from API endpoints using Channels

ASP.NET Core runtime exception: Could not load type ‘Microsoft.IdentityModel.Json.JsonConvert’

Exploring ASP.NET Core Minimal APIs: Should I use them in production?

Why you can’t debug your Blazor WebAssembly application

What to do when emojis are not rendered correctly by ASP.NET Core web applications

Understanding the Blazor component lifecycle

Implementing Blazor error boundaries

Getting started with GitHub Copilot in Visual Studio

How to generate batches of SQL Server INSERT statements with the maximum allowed number of row values

Treat Blazor component Warnings as Errors: Found markup element with unexpected name