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NET 10: Framework supported Strategy Pattern makes your Open/Closed code easier than ever. Less boilerplate with Keyed Services!

This article will show how to use the built in NET 10 strategy pattern to better isolate your code and ensure it follows the Open/Close principle. The Strategy pattern usually needs plumbing to handle registration and also determination of which service to use. NET 10 takes care of that. Step 1: Register your services In our example, we are creating a marketplace for eCommerce providers to…

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My Microsoft MVP Publishing Statistics

This year I started focusing on LinkedIn with great success. in Feb my .NET 10 articles were viewed 24,807 times I continue to work on my blog as well with over 20,000 reads: Stack Overflow continues to show my post there with over 10 million people reached over the years I have been active there:

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#ASP.NET Core

Guard Clauses in .NET 10: Stop Writing If-Throw Blocks

Sometimes it’s the little changes in .NET that brings joy to developers. Although some of the features in this article will be seen already in NET 8, many are new to NET 10 A guard clause is simply code which protects a function. For example, an order form where you can only order 1000 bananas at a time. Old Way (Yuck) public void OrderBananas(int count){ if (count <= 0) throw new…

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#c

New!! SearchValues<T> in .NET 10: Parse CSV Strings Lightning Fast

.NET 10 has come with some really great performance improvements which you can get by just compiling your code in NET 10 then hosting it in NET 10. There are new areas however that will need specific use to get the value from. In this article I’ll show you how to search CSV log files at incredible speeds via SearchValues. You’ll be able to use this to search other delimited files, but I’ll focus…

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#c #csv parsing

StringBuilder.GetChunks() in C#: The Hidden Method That Makes String Building Fast (Especially in NET10)

So, you’ve spent the time to use StringBuilder to save on resources to create a complex string. Excellent! But then you call StringBuilder.ToString() and get hit by a massive string allocation. Less than excellent 😦 Let’s fix that and save you hard-won performance with GetChunks(). ToString() – Huge Allocations: // The old way - StringBuilder creates one huge stringvar sb = new…

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#c

Behold! Span<T> in C#: The Performance Beast Hiding in Plain Sight (NET10 special)

String, oh how I love you. Used everywhere, but like a chocolate cake, loaded with hidden costs. In this article we’ll go over just a few places where you can instead use Span<T> instead of string and get an app that consumes lets memory and les CPU cycles. In NET10, Span<T> is faster than ever. Splitting Imagine you have a file name like bahai.txt , you just want the filename, not the…

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#c

The awesome ConcurrentDictionary in C#: The Thread-Safe Dictionary You Didn't Know You Needed (and should use in NET10)

You have a need for a Dictionary, adding, removing and checking on values. In the past the C# lock might have been needed to prevent access issues. In the vast number of cases, you’ll find using a thread safe ConcurrentDictionary reduces so many of your issues, while maintaining a super fast lookup. There are a few costs involved which later on we will go over, but NET10 has reduced these…

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#c

HashSets in C#: Some small tips to change your life

A Hashset allows you to access items with maximum speed. Accessing the lookup by default is case sensitive. Of course you can always convert to upper or lower data going in or out, but there is a simpler way. The Hashset constructor lets you pass in not only the collection of values, but also the case sensitive nature. Let’s have a look at a simpol list of valid shippers in the States. private…

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#ASP.NET Core #c

Adding ModelState errors to a common error handler in ASP.NET Core

In my previous article, I covered creating a common validation exception where Fluent Validations can go into and then be handled by a Handler class. Often ModelState is helpful if you use data annotations. So in this article we will intercept those errors and push them into our common Validation Exception handler so we have 1 place. Step 1: Turn off the automatic handling of ModelState errors…

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#ASP.NET Core

FluentValidation: Extensions to Simplify use

The NuGet package FluentValidations forms the core of a very large and popular eco-system of validations systems used in the .Net space. When used in small and quick logic classes for validation, you can save your self some time with an extension method which can test and assert an error when the validation fails. You can then use .NET’s middleware and related systems to handle the…

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#ASP.NET Core #fluent-validation

VS Code: Cool Console launch settings for maximum geek-outs

In VS Code when you launch a debugging session for .NET code, a console will be used for output. But you are a geek and of course was to maximize the coolness of the console output. Simple: Here’s my launch settings for a simple console launch { "name": ".Net", "type": "coreclr", "request": "launch", "preLaunchTask": "build-csharp", "program":…

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#vscode

VS Code: Debugging to Edge or Chrome while disabling all extensions and features

Extensions can cause lots of issues when debugging your client side javascript code. In this short, but oh so helpful article, I’ll go over how to debug from VS Code to Edge or Chrome will everything turned off. Just pure browser goodness. In your Node JS project in VS Code, like used by Angular, you’ll have either a launch.json or a code-workspace file where you cause the browser to launch and…

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#ASP.NET Core #vscode

Modular Monoliths in ASP.Net Core – The easy way (Part 4)

In part 3 I covered the solution setup for Modular Monoliths. In this article I will cover how to connect various modules using Mediatr to ensure no tight coupling. I’ll assume you have added now the Nuget Mediatr package. Use version 12 or lower to avoid licensing costs. Version 12 is free. Let’s follow an order from the Controller to the creation of the order, then to the production system…

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#ASP.NET Core #mediatr #Modular-Monolith #technology

UPDATED to .NET 10!!! How to Run Async/Await Tasks from Non-Async Methods in C# .NET 10 (Without Deadlocks)

I wanted to update a popular article I wrote back-when. Sometimes when working with code that can’t change, you’ll need to run async code in a function that’s not async. Back in 2022, I wrote about this with .NET 7, but a lot has changed since then ; mostly around knowing what causes deadlocks and how to avoid them like a pro. What’s Different From My 2022 Article? The old article showed using…

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#ASP.NET Core #Xamarin.Forms

UPDATED to .NET 10!! A straightforward way in C# .NET to encrypt and decrypt a string using AES

In my older article, I covered encryption. This is one of my most popular articles, so I thought I would update it to take advantage for .NET 10 Here’s a complete example of encrypting and decrypting a string in C# using AES-GCM with .NET 10 best practices: using System; using System.Security.Cryptography; using System.Text; namespace MyNiceApp; class Program { // Modern security constants…

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#c #encryption

Modular Monoliths in ASP.Net Core – The easy way (Part 3)

In my previous article, we covered some basic structures and designs for our Modular Monolith. In part 3 I’ll cover how to setup your solutions using Solution folders to visually isolate your Modules. Remember that a Module is just a collection of csproj projects which serve a common feature group, like an Orders API. Right click your solution and choose Add->Solution folders. Add one for each…

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#ASP.NET Core #mediatr

Nuget Tricks - C# and Visual Studio 2026

Visual Studio’s package manager, Nuget, is the well-known companion of every seasoned .Net developer. Here are some tricks you might or might not know. Prevent Updates In my previous post about Mediatr and keeping it free, I showed this trick. Wrap the version number in [square brackets]. Nuget will never bug you again <PackageReference Include="MediatR" Version="[12.4.1]" /> Single File,…

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#c #nuget #Visual Studio

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