Archive Steven Giesel

Archive (315 posts)

New runtime async is hitting .NET 11 - Part 1 (Feb 15, 2026)
Collection Expression Arguments in C# 15 are "out" (Feb 12, 2026)
.NET Toolbox February Update (Feb 10, 2026)
Sometimes you just need extensions methods to model your stuff (Jan 25, 2026)
Collection Expression Arguments in C# 15+ (Jan 12, 2026)
.NET Toolbox (Jan 05, 2026)

Task.Delay fails if you wait longer than 49.7 days (Dec 28, 2025)
One Minute Knowledge: Is ToArrayAsync or ToListAsync faster for Entity Framework? (Dec 15, 2025)
GitHub Runners might not be a good benchmark baseline (Dec 09, 2025)
Mime Type Helper in .NET 11 (Dec 02, 2025)
Using sortable UUID / GUIDs in Entity Framework (Nov 24, 2025)
No more public partial class Program in .NET 10 (Nov 19, 2025)
Capturing Console Output in xUnit.v3 (Nov 10, 2025)
ArrayPool Benchmarks: We have a problem (Nov 03, 2025)
LinkedIn: "Are you still using new Random() everywhere?" (Oct 27, 2025)
Inlining and structs in C# (Oct 20, 2025)
Use CancellationTokens (Oct 06, 2025)
LinkedIn Benchmarks again (Sep 15, 2025)
ToDictionaryAsync retrieves the whole object from the database in Entity Framework (Sep 08, 2025)
Divide and Conquer the Database (Sep 01, 2025)
Quick one: Difference between collection expressions and collection initializer (Aug 25, 2025)
Two more LINQ extensions in dotnet 10 (Aug 18, 2025)
How to not return all properties in SqlRaw (Aug 11, 2025)
Disabling thread safety check in Entity Framework (Aug 04, 2025)
Using Architecture Tests for CancellationTokens and sealed classes (Jul 28, 2025)
Why Lists are not lowered to a while loop (Jul 21, 2025)
ToListAsync is fast again in Entity Framework (kind of) (Jul 07, 2025)
Adding test description for data-driven tests in xUnit (Jun 30, 2025)
You can't use switch expressions in Blazor (sometimes) (Jun 23, 2025)
.NET 10 Performance Edition (Jun 16, 2025)
How to get to know the latest dotnet features - the nerdy way (Jun 09, 2025)
Why is enumerating over List faster than IList? (Jun 02, 2025)
Avoiding reflection in C# in way unsafer ways! (May 26, 2025)
Writing new guards with extensions in C# 14 (May 19, 2025)
Clearing NuGet Caches (May 12, 2025)
Does .NET Documentation get ads? Aka: Is Copilot in the docs something useful? (May 05, 2025)
HttpClient improvements in .NET 10 (Apr 28, 2025)
Extensions get an update in .NET 10 (Apr 21, 2025)
A custom 404 page in Blazor Web Apps (Apr 14, 2025)
More LinkedIn "Tips": Dragging your whole database into memory! (Apr 07, 2025)
C# Language Mind map v14 (Mar 31, 2025)
Solving Problems you wouldn't have if you wouldn't use Entity Framework (Mar 24, 2025)
TypeScript-Go: A 10x Faster TypeScript without .NET but in Go (Mar 17, 2025)
System.Linq.Async is part of .NET 10 - LINQ for IAsyncEnumerable (Mar 10, 2025)
Tailwind v4 with Blazor - It just got easier (Mar 03, 2025)
C# 14: Null-conditional assignment (Feb 24, 2025)
IEnumerable vs IEnumerator in C#: One is 2x Faster - LinkedIn Edition (Feb 17, 2025)
Managed Postgres Instance: Neon (Feb 10, 2025)
LINQ MindMap: .NET 10 Edition (Feb 06, 2025)
Validate that your DI Container can be created in ASP.NET Core (Feb 03, 2025)
When will .NET Framework retire? (Jan 27, 2025)
Cache CORS Preflight Requests (Jan 20, 2025)
Announcing Developer Academy (Jan 14, 2025)
Equipping 3rd party types with debugging capabilities (Jan 13, 2025)
Why is Open Source important? And is it free? (Jan 06, 2025)

Authenticate videos and images in Angular (Dec 23, 2024)
Some news about .NET 10: BackgroundServices and new String Comparer (Dec 16, 2024)
LINQ might get a "left join" operator in .net 10 (Dec 09, 2024)
Having fun with ValueTuple (Dec 02, 2024)
"Always use early returns" - LinkedIn Edition (Nov 25, 2024)
How to assert assumptions in code that might not be true? (Nov 18, 2024)
An awaitable Blazor Modal Dialog (Nov 11, 2024)
Be careful with ToListAsync and ToArrayAsync in Entity Framework Core (Nov 04, 2024)
ToArray(Async) vs ToList(Async) in Entity Framework 8 (Oct 28, 2024)
Comparing the performance between the Minimal API and classic Controllers (Oct 21, 2024)
Git Tricks: Get the last checked out branch (Oct 14, 2024)
Centralize your packages in .NET with NuGet (Oct 07, 2024)
xUnit v3 and some stuff about TUnit (Sep 30, 2024)
Fullstack Web Applications with .NET, Nx and Angular Seminar (Sep 27, 2024)
Swagger Replacement in ASP.NET 9 (Sep 23, 2024)
Managing TaskCancellationTokens in a central service in ASP.NET (Sep 16, 2024)
LINQ Joins on multiple columns in Entity Framework (Sep 09, 2024)
How to test HttpClient inside API Tests (Sep 02, 2024)
To Soft Delete or Not to Soft Delete (Aug 26, 2024)
FormattableStringFactory - Creating dynamic FormattableString instances (Aug 19, 2024)
async2 - The .NET Runtime Async experiment concludes (Aug 12, 2024)
Organizing Parameters in Minimal API with the AsParametersAttribute (Aug 05, 2024)
How many API's does .NET have? (Jul 29, 2024)
The state machine in C# with async/await (Jul 22, 2024)
How not to benchmark! (Jul 15, 2024)
UUID v7 in .NET 9 (Jul 08, 2024)
Codespaces for your open-source project (Jul 02, 2024)
ReadOnlySet<T> in .NET 9 (Jun 26, 2024)
NCronJob - June Edition (Jun 21, 2024)
Are my EF LINQ to SQL queries safe? (Jun 17, 2024)
Does an HttpClient await the Header and the body? (Jun 10, 2024)
StringBuilders magic for very large strings (Jun 03, 2024)
Cancel WhenAny - linked CancellationTokenSource (May 28, 2024)
Help my memory dump always shows me some exceptions! (May 23, 2024)
MemoryCache, DistributedCache and HybridCache (May 20, 2024)
Generate http files from a swagger definition (May 16, 2024)
NCronJob - Big Updates (May 13, 2024)
.NET 9 LINQ Performance Edition (May 09, 2024)
Boosting Productivity with Analyzers (May 06, 2024)
Checking your solution for NuGet vulnerabilities or deprecated packages (May 02, 2024)
How does a List know that you changed it while enumerating it? (Apr 29, 2024)
Does readonly make your code faster? (Apr 23, 2024)
AI Hype - Am I out of work in five years? (Apr 19, 2024)
Fluent API to await multiple calls and get their respective results (Apr 15, 2024)
Equip 3rd party types with a deconstructor (Apr 08, 2024)
Pattern matching and the compiler can be surprising (Apr 01, 2024)
C# 13: Allow ref and unsafe in iterators and async (Mar 25, 2024)
NCronJob - Scheduling made easy (Mar 18, 2024)
bUnit v2 - The Blazor unit testing library vNext (Mar 11, 2024)
Typesafety in xUnit with TheoryData<T> (Mar 05, 2024)
Lock statement patterns (Feb 27, 2024)
Avoid multiple boolean parameters (Feb 20, 2024)
LINQ MindMap: .NET 9 Edition (Feb 14, 2024)
Garbage Collector (over)simplified (Feb 11, 2024)
SearchValues object become better with .NET 9 (Feb 02, 2024)
Three new LINQ methods in .NET 9 (Jan 27, 2024)
A replacement for BinaryFormatter in .NET 8 (Jan 20, 2024)
An alternative to AutoMapper (Jan 16, 2024)
Const strings are not so const after all (Jan 10, 2024)
An asynchronous lock free ring buffer for logging (Jan 03, 2024)

A new lock type in .NET 9 (Dec 27, 2023)
The first possible new feature of C# 13: Params collection (Dec 20, 2023)
bUnit Generators - Generate your stubs automatically (Dec 17, 2023)
Entity Framework - Storing complex objects as JSON (Dec 14, 2023)
A journey about the new interceptors of .NET 8 (Nov 28, 2023)
Blazor .NET 8 - Enhanced Form Navigation (Nov 22, 2023)
A more flexible and enhanced way of logging in .NET 8 (Nov 15, 2023)
Interactive LINQ tutorial, especially for beginners (Nov 10, 2023)
Redux Pattern in Blazor (Nov 04, 2023)
Yes you can create classes on the stack! (Nov 01, 2023)
Interfaces can have private methods (Oct 25, 2023)
Blazor with TailwindCSS (Oct 18, 2023)
Structured Concurrency in C# (Oct 11, 2023)
.NET 8 and Blazor United / Server-side rendering (Oct 04, 2023)
Questions I asked as .NET interviewer (Sep 29, 2023)
Less boilerplate code with the new primary constructor in C# 12 (Sep 24, 2023)
A new way of doing reflection with .NET 8 (Sep 19, 2023)
Building a Minimal ASP.NET Core clone (Sep 14, 2023)
Enabling List<T> to store large amounts of elements (Sep 07, 2023)
Turn on Nullability checks by default (Sep 01, 2023)
The "Weak Event" Pattern in C# (Aug 27, 2023)
Expression-bodied members in properties (Aug 21, 2023)
Enum.TryParse unexpected behavior (Aug 17, 2023)
Creating Your Own Fakes Instead of Using Mocking Libraries (Aug 12, 2023)
What's going on with Moq? SponsorLink and burnt soil! (Aug 09, 2023)
Keyed Services in the IServiceProvider in .NET 8 preview 7 (Aug 07, 2023)
The combined power of F# and C# (Aug 02, 2023)
How to benchmark different .NET versions (Jul 30, 2023)
Gracefully Handling Entity Framework Exceptions with EntityFramework.Exceptions (Jul 24, 2023)
.NET Framework 4.8 to .NET 6 migration (Jul 19, 2023)
Three tricks with Dictionary (Jul 13, 2023)
Overload resolution in C# (Jul 08, 2023)
Why I like and prefer xUnit (Jul 03, 2023)
LINQ: Select.Where or Where.Select? (Jun 29, 2023)
Missing Stack trace when eliding the await keyword (Jun 25, 2023)
Create your own Mediator (like Mediatr) (Jun 21, 2023)
C# 12: Collection literals (Jun 17, 2023)
How does List work under the hood in .NET? (Jun 13, 2023)
Span / Memory / ReadOnlySequence in C# (Jun 08, 2023)
Time abstraction in .NET 8 (Jun 04, 2023)
New Terminal logger for .NET 8 (May 31, 2023)
nameof get's a bit better in C# 12 (May 28, 2023)
How does TryGetNonEnumeratedCount work? (May 26, 2023)
6 useful extensions for IEnumerable (May 23, 2023)
Some cool things you can do with ValueTuple (May 18, 2023)
Becoming a Microsoft MVP (May 13, 2023)
Entity Framework and ordered indexes (May 08, 2023)
Controlling the log level of your application (May 03, 2023)
Verifying your DI Container (Apr 30, 2023)
Create your own Validationattribute in ASP.NET Core (Apr 27, 2023)
Domain events and the "Unit of Work" pattern (Apr 22, 2023)
Covariance and Contravariance in C# (Apr 17, 2023)
.NET 8 Performance Edition (Apr 13, 2023)
5 useful extensions for Task<T> in .NET (Apr 10, 2023)
Source Generators and Regular Expressions (Apr 05, 2023)
LINQ on steroids with SIMD (Apr 01, 2023)
Creating a ToolTip Component in Blazor (Mar 31, 2023)
C# Source Generators: How to get build information? (Mar 27, 2023)
Leverage 'is not' Operator for Exception Filtering! (Mar 24, 2023)
Caching in .NET with MemoryCache (Mar 21, 2023)
Write your own AutoMapper in C# (Mar 18, 2023)
LINQ // Skip and Take (Mar 14, 2023)
How to write your own cron Job scheduler in ASP.NET Core (like Quartz, Hangfire, ...) (Mar 11, 2023)
Benchmarking - A matter of perspective (Mar 08, 2023)
Is a square a rectangle? Liskov substitution principle in action (Mar 05, 2023)
The Humble Object Pattern (Mar 02, 2023)
Performance (ReadOnly)List vs Immutable collection types (Feb 27, 2023)
From Testing Pyramid to Diamond (Feb 25, 2023)
Getting git version information in your C# code (Feb 22, 2023)
error NETSDK1194: The "--output" option isn't supported when building a solution. (Feb 19, 2023)
A (performance) quirk with JsonSerializer (Feb 15, 2023)
What is a Middleware and how to use it in ASP.NET Core? (Feb 10, 2023)
Multi-Tenancy with RavenDB and ASP.NET Core (Feb 07, 2023)
C# Language Mind map (Feb 05, 2023)
Repository Pattern - A controversy explained (Feb 02, 2023)
Native DateOnly and TimeOnly support in Entity Framework 8 in SQL Server (Jan 30, 2023)
C# Lowering (Jan 26, 2023)
Deep nesting - Why and how to avoid (Jan 21, 2023)
C# 12: Primary Constructors (Jan 18, 2023)
Cohesion - An indicator for refactoring (Jan 15, 2023)
Entity Framework 8: Raw SQL queries on unmapped types (Jan 12, 2023)
Easy Pagination for Entity Framework in 3 steps (Jan 11, 2023)
No, No, No - Tasks are not threads and they are not for performance! (Jan 08, 2023)
Using GitHub as your portfolio (Jan 06, 2023)
.NET Tips and Tricks & ValueStringBuilder (Jan 03, 2023)
Give your strings context with StringSyntaxAttribute (Jan 01, 2023)

C# 12: Default Parameters in Lambdas (Dec 30, 2022)
ReadOnlySpan<char> and strings - How not to compare them (Dec 29, 2022)
Structure and order your DI container (Dec 20, 2022)
Array, List, Collection, Set, ReadOnlyList - what? A comprehensive and exhaustive list of collection-like types (Dec 15, 2022)
Simple DI - Container (Dec 12, 2022)
Delete a record without prior loading in Entity Framework (Dec 10, 2022)
ChatGPT - Current state for .NET - and in general (Dec 08, 2022)
Check for elevated rights in .NET 8 (Dec 07, 2022)
Abstraction vs Encapsulation (Dec 05, 2022)
How to enumerate through a StringBuilder (Dec 03, 2022)
New ArgumentException and ArgumentOutOfRangeException helpers in .NET 8 (Dec 01, 2022)
A new wave of analyzers in .NET 8 (Nov 27, 2022)
Frozen collections in .NET 8 (Nov 24, 2022)
"Use always a StringBuilder" - Internet myths (Nov 22, 2022)
How to get allocations in .NET? And how big is an empty array? (Nov 20, 2022)
Anonymous test data with AutoFixture (Nov 19, 2022)
Design patterns explained with sketches (Nov 15, 2022)
Mutable value types are evil! Sort of... (Nov 06, 2022)
Marking API's as obsolete or as experimental (Nov 03, 2022)
Infographics Compendium III - Exceptions, EF Sanitized, Operators, ... (Nov 02, 2022)
local functions vs lambda expressions (Oct 30, 2022)
Throwing exceptions - Why is my stack trace lost? (Oct 21, 2022)
LiteDB - A .NET embedded NoSQL database (Oct 20, 2022)
Cursed C# - Doing shenanigans in C# (Oct 15, 2022)
Infographics Compendium II - ThrowHelper, null Task and more (Oct 15, 2022)
Low-level struct improvements in C# 11 (Oct 11, 2022)
How does the key exchange in HTTPS work? (Oct 08, 2022)
Introduction to WebApplicationFactory (Oct 05, 2022)
Infographics Compendium I - Generators, pure functions and more (Oct 02, 2022)
x86 vs x64 in .NET (Sep 30, 2022)
Pattern matching is awesome (Sep 27, 2022)
How does Pagination work? (Sep 25, 2022)
Blazor Project Structure (Sep 23, 2022)
Memory is complicated (Sep 21, 2022)
ASP.NET Core - Why async await is useful (Sep 17, 2022)
LINQ explained with sketches - the eBook (Aug 25, 2022)
EF7 - Bulk updates and Bulk deletes (Aug 21, 2022)
NDepend (Aug 17, 2022)
LINQ explained with sketches (Aug 10, 2022)
Mediator Pattern - CQRS with MediatR (Aug 06, 2022)
Logging Source Code Generators (Jul 28, 2022)
Git-Flow, GitHub-Flow, Gitlab-Flow and Trunk Based Development explained (Jul 23, 2022)
Blazor Client - Loading Screen (Jul 15, 2022)
How does git work? (Jul 11, 2022)
Abstract class vs interface (Jul 08, 2022)
SOLID Principles in C# (Jul 04, 2022)
C# vNext - What could come (Jun 30, 2022)
Central nuget store for your UNO Platform App (Jun 27, 2022)
When does Blazor (not) render? (Jun 23, 2022)
Wrap Event based functions into awaitable Tasks - Meet TaskCompletionSource (Jun 20, 2022)
goto in action - The exception from the rule (Jun 18, 2022)
What is the difference between C#, .NET, IL and JIT? (Jun 14, 2022)
Delegate, Action, Func, Lambda expression - What the heck!? (Jun 10, 2022)
The garbage collector in .NET - Part 2: Compacting (Jun 03, 2022)
ObjectPool - Rent and return some instances (Jun 02, 2022)
Blazor with an RSS Feed (May 30, 2022)
How to unit test a RavenDB (May 24, 2022)
The garbage collector in .NET (May 21, 2022)
Blazor with CancellationToken support (May 18, 2022)
Stop using Finalizers in C# (May 15, 2022)
Tail-Recursion - Explained with the Fibonacci series (May 13, 2022)
Why are sealed classes faster in C#? And should I seal them? (May 12, 2022)
Passing by value or by reference - What is faster? (May 07, 2022)
ReadOnlyCollection is not an immutable collection (Apr 26, 2022)
Is public const bad? (Apr 21, 2022)
Modal Dialog component with Bootstrap in Blazor (Apr 19, 2022)
4 Different ways of creating an array (Apr 14, 2022)
default(MyStruct) vs new MyStruct() - what is the difference? (Apr 13, 2022)
From Zero to Production - Generate everything with a single button (Apr 11, 2022)
struct vs readonly struct vs ref struct vs record struct (Apr 08, 2022)
Create a low allocation and faster StringBuilder - Span in Action (Apr 03, 2022)
Reusable loading Bar Component in Blazor (Mar 31, 2022)
UNO Platform - Build a Todo App - Part 5 (Mar 26, 2022)
UNO Platform - Build a Todo App - Part 4 (Mar 23, 2022)
The Trie - A powerful data structure (Mar 20, 2022)
UNO Platform - Build a Todo App - Part 3 (Mar 16, 2022)
UNO Platform - Build a Todo App - Part 2 (Mar 13, 2022)
UNO Platform - Build a Todo App - Part 1 (Mar 10, 2022)
Using SSE in C# on the example of the sum of a list (Mar 07, 2022)
Decorator Pattern using the example of a cached repository (Feb 19, 2022)
RequiredIf - Extend the validation in Blazor (Feb 15, 2022)
Directory.Build.props - Centralize your builds (Feb 13, 2022)
DebuggerTypeProxy - Displaying complex states in the debugger (Feb 10, 2022)
Blazor Performance Tuning - Good practices and advanced use cases (Feb 05, 2022)
Heap, Stack, Boxing and Unboxing, Performance ... let's order things! (Jan 24, 2022)
Prerendering Blazor Apps - How does it work / tips and tricks (Jan 19, 2022)
Enum.Equals - Performance analysis (Jan 11, 2022)
Lazy load components with Blazor - Virtualize in Action (Jan 02, 2022)

Generator-Function in C# - What does yield do? (Dec 16, 2021)
Task vs ValueTask - The what's, when's and how's (Dec 05, 2021)
Lifetime Scope in Blazor Client and Server Apps (Nov 24, 2021)
Branch Prediction - How much does an if cost? (Nov 09, 2021)
ILGPU - Processing Data on your GPU (CUDA / OpenCL in C#) (Oct 28, 2021)
static abstract interfaces and generic math (Oct 17, 2021)
A better enumeration - Type safe from start to end (Oct 03, 2021)
git hook - prefix your commit message with your JIRA ticket (Sep 23, 2021)
API Versioning in ASP.NET Core made easy (Sep 21, 2021)
git - useful aliases (Sep 10, 2021)
IEnumerable vs IQueryable - What's the difference (Sep 06, 2021)
How to hunt down bugs with git bisect (Aug 21, 2021)
How to rebase onto a different branch with git (Aug 17, 2021)
Tactical Design Patterns in C# - Part 1: Creational (Aug 09, 2021)
struct Performance (Aug 01, 2021)
Shorts: foreach on type without IEnumerable (Jul 24, 2021)
Task.WhenAny - How to cancel other tasks (Jul 18, 2021)
A story about boxing / unboxing and string interpolation in C# (Jul 14, 2021)
EF Core 6 - New Features (Jul 12, 2021)
Tutorial Unit and E2E Testing in Blazor - Part 2 Playwright Introduction (Jul 11, 2021)
Quickly asked: Should I use unsigned integers (uint, uint8, ...) in C#? (Jul 08, 2021)
Async Await Pitfalls / Guidelines - .NET User Group Zurich Presentation (Jul 07, 2021)
Tutorial Unit and E2E Testing in Blazor - Part 1 (Jul 06, 2021)
Blazor Improvements in .NET 6 (Jul 03, 2021)
Upcoming .NET User Forum Zurich / 6th July 2021 (Jul 01, 2021)
My first Post (Jun 29, 2021)

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