C# language feature deep dives, including Roslyn analyzers, UnsafeAccessor, and techniques for making reflection-heavy code safe under Native AOT.
Learn to package and distribute your roslyn analyzer nuget package with the right folder structure, metadata, versioning, and CI/CD automation in .NET 10.
Build roslyn analyzer c# from scratch -- complete project setup, DiagnosticAnalyzer scaffold, CodeFixProvider implementation, debugging, and unit tests.
Learn what roslyn analyzers are, how they work in the .NET 10 compiler pipeline, why teams build custom diagnostics, and how to write your first rule in C#.
Learn how UnsafeAccessor in C# (.NET 8+) gives you direct access to private fields, methods, and constructors -- avoids reflection lookup overhead on the hot path, AOT-friendly when the target type and member are statically known at compile time.
Learn how to make C# reflection compatible with Native AOT in .NET 10 using DynamicallyAccessedMembers, RequiresUnreferencedCode, and trim-safe patterns.
Compare C# reflection vs source generators in .NET 10 -- understand performance, AOT compatibility, maintainability trade-offs, and which to use for your use case.
Discover how C# DI containers use reflection to resolve dependencies -- then build a simplified version yourself to understand the internals in .NET 10.
Expression trees as a reflection alternative in C# -- learn to build compiled property accessors, method invokers, and factories in .NET 10.
Master caching reflection metadata with FrozenDictionary in .NET 10 -- eliminate PropertyInfo overhead, build thread-safe metadata caches, and maximize read performance.
Learn to create, apply, and read custom attributes in C# using reflection -- with practical examples for validation, routing, and plugin registration in .NET 10.
Activator.CreateInstance vs compiled expressions in C# .NET 10 -- understand when each wins and how to build a high-performance factory with cached delegates.
Understand C# reflection performance in .NET 10 -- learn caching strategies, compiled delegates, FrozenDictionary, and when reflection is fast enough.
Learn to use PropertyInfo and MethodInfo in C# to read and write properties, invoke methods, and inspect types at runtime with practical .NET 10 examples.
Avoid costly C# reflection anti-patterns -- learn 8 common mistakes developers make with reflection and the .NET 10 alternatives that perform better.
Master C# reflection in .NET 10 -- learn Type, PropertyInfo, MethodInfo, performance caching with FrozenDictionary, and when to avoid reflection entirely.
New LINQ methods in .NET 6-10: Chunk, DistinctBy, MinBy, CountBy, Index, LeftJoin and more -- every addition with before/after C# code examples.
Master LINQ element access in C# -- First, Last, Single, Chunk, and TryGetNonEnumeratedCount for safer, faster .NET 6+ collection queries.
Understand LINQ deferred execution in C# -- when queries actually run, multiple enumeration bugs, and when to materialize with ToList for correctness.
Learn LINQ joins in C# from inner joins to the new .NET 10 LeftJoin and RightJoin, with real-world Customer/Order examples and SQL comparisons.
Master LINQ set operations in C# including .NET 6 DistinctBy, UnionBy, IntersectBy, and ExceptBy with real-world before/after code comparisons.
Master LINQ aggregation in C# with Count, Sum, MinBy, MaxBy, and custom Aggregate, plus why Count vs Any matters for real-world .NET performance.
Master LINQ grouping in C# with GroupBy, ToLookup, and the powerful .NET 9 CountBy and AggregateBy methods for cleaner data aggregation.
Master LINQ ordering in C# with OrderBy, ThenBy, and the .NET 7 Order() method. Covers custom IComparer, stable sort, StringComparer, and real-world examples.
Learn LINQ projection in C# with Select, SelectMany, and the .NET 9 Index() method. Covers anonymous types, records, flattening nested collections, and real examples.
Learn LINQ filtering in C# with Where, Any, All, Contains, and OfType. Covers compound predicates, null handling, and performance tips with .NET 6-9 examples.
Master LINQ in C# with this complete guide covering filtering, projection, ordering, grouping, joins, and every new operator added in .NET 6 through .NET 10.
Master C# Regex Replace and Split with MatchEvaluator delegates, substitution syntax, and .NET 8 EnumerateSplits for zero-allocation text processing.
Master C# regex lookahead, lookbehind, backreferences, and zero-width assertions with practical .NET code examples for advanced pattern matching.
Learn Regex.Match, Matches, and IsMatch in C# with named groups, capture collections, and .NET 7 EnumerateMatches for zero-allocation matching.
Optimize C# regex performance with GeneratedRegex source generation, Compiled vs interpreted modes, NonBacktracking O(n) matching, and timeout for ReDoS prevention.
Build reliable C# regex validation for email, URL, phone, and common inputs using GeneratedRegex, NonBacktracking, and timeout for production safety.
Struggling with enum vs const in C#? This decision guide covers type safety, extensibility, serialization, and the enumeration class pattern to help you choose correctly.
Learn how to use C# enum with switch expressions and pattern matching. Covers exhaustive checks, discard arms, tuple patterns, guard clauses, and compiler warnings.
Learn every C# enum to string conversion pattern: ToString, Enum.GetName, JsonStringEnumConverter, custom display names, and parsing strings back to enums safely.
Learn how C# enum flags work. Understand the [Flags] attribute, bitwise OR and AND, HasFlag(), and when to use a flags enum over a regular enum in .NET.
Learn how to use enum in C# from scratch. Covers declaring enums, assigning values, casting, comparing, iterating, and the best practices every C# developer should follow.
Master C# enum with this complete guide. Learn to declare enums, use flags, convert to string, apply switch pattern matching, and follow .NET best practices.
Master C# Regex with this complete guide covering pattern syntax, RegexOptions, GeneratedRegex, performance, and real .NET code examples.
Learn when to use C# StringBuilder vs string concatenation, how allocations differ, and how .NET 6 interpolated string handlers change performance calculations.
Learn how to convert a C# string to byte array using UTF-8 encoding, Encoding class, Span
Learn every C# multiline string technique: verbatim @-strings, C# 11 raw string literals with triple quotes, and .NET 7 UTF-8 u8 literals with code examples.
Learn C# string searching with Contains, IndexOf, Split, Replace, and .NET 8 SearchValues
Master C# string comparison with Equals, OrdinalIgnoreCase, StringComparer, and culture-sensitive APIs. Avoid the ToLower() antipattern and Turkish i problem.
Master C# string manipulation with this complete guide covering .NET 6-9 APIs, Span
Learn how to test C# source generators with .NET 10. Complete guide covering Microsoft.CodeAnalysis.Testing, unit tests, snapshot testing with Verify, and CI integration.
Compare C# source generators vs reflection in .NET 10. Understand performance differences, AOT compatibility, and when to choose source generators over runtime reflection.
Learn to measure and optimize C# source generator performance in .NET. Covers incremental source generator caching, build-time profiling, and binlog analysis.
Learn C# source generators through 3 real-world examples: auto-generating ToString(), object mapping, and serialization boilerplate in .NET 10.
Learn how C# source generator attributes trigger code generation in .NET. Complete guide to the marker attribute pattern with ForAttributeWithMetadataName.
Master reading and traversing a Roslyn syntax tree in a C# source generator. Learn SyntaxTree, SemanticModel, and ForAttributeWithMetadataName for .NET 6+.
Learn the incremental source generator API in C# -- covers pipeline design, caching with IEquatable, performance tips, and best practices for modern .NET.
Learn how to create a C# source generator with .NET 10. Step-by-step guide covering project setup, IIncrementalGenerator implementation, and packaging.
Learn exactly how C# source generators work inside the Roslyn compilation pipeline. Understand the two-phase compilation model, syntax providers, and incremental execution.
Understand what C# source generators are, their history in .NET, and how they differ from reflection and T4 templates. A clear introduction for .NET developers.
Master C# source generators with this complete guide. Learn how compile-time code generation works in .NET 10, why it beats reflection, and how to get started.
Learn how exception handling works in C# with the basics of try catch. This article is perfect for junior software engineers aiming to understand dotnet and C#.
Learn how to convert a C# string to a byte[] using UTF-8, ASCII, and Unicode encodings. Copy-paste code examples included for each method.
I tried to get C# regular expression benchmarks in my original article, but messed up a critical assumption. Let's see how to fix that and get the real data!
Regular expressions are powerful for pattern matching, but what about performance? Check out this article for details on C# regex performance from benchmarks!
Check out these 3 simple examples of regular expressions in C#! If you're new to regex and coding in CSharp, these are a perfect starting point for you!
Regular expressions are powerful for pattern matching, but what are the regex options in C# that we have access to? What do they do and how can we use them?
Check out these benchmarks measuring collection initializer performance in C#. How the heck did I speed up C# collection initialization by 87%?!
See code examples for C# collection initializers and collection expressions! Compare and contrast the readability of these different examples.
Using reflection in DotNet to create object instances? See the performance of ConstructorInfo compared to other methods provided by reflection in DotNet!
Let's compare Activator.CreateInstance vs Type.InvokeMember! Check out this head to head battle for ways to create instances using reflection in dotnet!
Learn how to safely use async event handlers in C#. Understand the dangers and discover best practices for managing async event handlers in your C# code.
Learn how to automatically cast between types in C#! Leveraging implicit operators in C#, we can do away with explicit casts to convert between types.
Learn why async void methods in C# can be dangerous with clear code examples. A perfect for beginner software engineers wanting to understand the risks.
Learn how to perform implicit conversions by using implicit operators in C#. This is a helpful feature that can enhance readability when done with care.
Leverage Activator.CreateInstance in C#, part of reflection in C#, to create object instances! This beginner's guide walks you through simple C# code examples.
Dive into async await in C# with these 3 beginner tips. Learn how to write async await code, handle multiple exceptions, and avoid dreaded deadlocks!
Reflection in C# is powerful, but with great power comes great responsibility. Check out these 4 quick examples of reflection in C# to see it in action!
Considering C# as you get started on your programming journey? This article is focused on C# for beginners, and I've included 5 concepts from C# with code!
Are you struggling with memory leaks due to your event handlers and events in C#? Check out how weak events in C# can help with garbage collection in your apps!
What does yield do in C#? Explore the benefits of using C# yield keyword with large datasets and best practices for implementation. One more tool to leverage!
Explore foreach loops in C# and how they simplify iterating through collections and arrays. Learn the basics of foreach loops and how to avoid common mistakes.
Learn how to format a string as Base64 in CSharp, including examples of encoding and decoding strings. Improve your coding skills with these practical tips!
Wondering how to compare strings in CSharp? We'll compare using string.Equals(), string.Compare(), and == operator to weigh the pros and the cons.
This is an exclusive article for Dev Leader Weekly readers! Check out some API design considerations when moving to a paging API from iterators!
What is string interpolation in C#? Learn about its definition, syntax, and benefits for improving code readability and efficiency. Check out this guide!
Learn how to make your code more readable, flexible, and maintainable with CSharp optional parameters. Check out these examples of optional parameters in C#!
Discover how to master the CSharp switch statement to make your code more effective and efficient. Follow along with C# switch statement examples!
Discover the benefits of using enums in CSharp, how to declare them step-by-step with examples, and the different types of enums available in this article!
In this CSharp switch statement tutorial, you'll learn how to properly use switch statements in your programs. Explore examples, features, and best practices!
Looking to enhance your C# coding skills? Learn how to use enums in Csharp with this beginner guide, including best practices, limitations, and examples.
Learn about reflection in CSharp and how it can be used. See how reflection in C# allows you to explore and modify objects, classes, and assemblies at runtime.
Learn about exceptions in CSharp and effective exception handling. We'll cover try-catch blocks and other tips for working with exceptions in C#!
If you're a programmer dealing with converting bytes to and from strings, you'll deal with character encodings. But in the ASCII vs UTF8 debate, who wins?
After some of the basics of dictionaries in C#, what else do dictionaries in dotnet have to offer us? Let's dive in before we get into the performance deep end!
Dictionaries in C# are heavily used by all levels of software developers. Let's look at some dictionary use cases and comparisons to other collections in C#!
In this article, we'll dive into a dictionary in C#! There are many collections for us to use in dotnet, and the dictionary class is one that is invaluable!
In C#, how can we balance asynchrony and laziness? Is there such a thing as async lazy? Let's explore our options built into dotnet!
Implicit operators in C# are a feature that can make our code more readable and expressive. But beware! Misuse can backfire and cause a great deal of headaches!
Exceptions and exception handling are a core part of C# and many other programming languages. But what If we didn't need to be throwing them?
Want to see how implicit operators work in C#? Check out this example code to see how you can make a multi-type object in dotnet that uses implicit operators!
I wanted to create a follow-up post in my series on IEnumerables, iterators, and collections focusing on performance characteristics. When checking out the runtime performance and memory characteristics between these materialized collections and iterator benchmarks, I was very surprised! Check out this article for performance benchmark characteristics and some curious finds.
Explore common C# pitfalls when choosing between iterators and materialized collections, covering memory use, re-enumeration risks, and safer API design.
If you're writing asynchronous code in C# and using EventHandlers, odds are you've had issues with exceptions. Task EventHandlers might be consideration!
Async event handlers in C# are tricky: an async void event handler can swallow exceptions and crash your app. Use this simple safety-net pattern to handle them.
Learn how C# iterators work under the hood, including the yield keyword and IEnumerable interface, through simple code examples anyone can follow.
New to C# and looking to understand more about the IEnumerable interface? Check out this article for a crash course on getting started with C# IEnumerable!
Compare five ways to write multiline strings in C#, from escape characters and verbatim strings to raw string literals introduced with C# 11.
Learn how C# records reduce DTO boilerplate and how setting LangVersion with PolySharp enables record syntax in projects targeting older .NET frameworks.
Most intermediate dotnet devs writing async await code in C# will come across async void at some point. Here's a creative solution for avoiding the headaches.
Get a beginner friendly walkthrough of C#'s core simple data types, covering int, float, double, byte, char, bool, and string with code examples.
Compare Tasks, BackgroundWorkers, and Threads in C# through working code examples that show how each approach handles concurrent programming scenarios.
A recap of the first C# Dev Connect meetup featuring an introductory talk on threading basics in C#, complete with sample code shared on GitHub.
Explore how the yield keyword can reshape API design for returning collections in C#, comparing IEnumerable approaches from both caller and implementer angles.
Understand how C# events can quietly cause memory leaks through instance scoped handlers, with downloadable source illustrating common event driven mistakes.
Learn a reusable C# pattern for starting and stopping single or grouped worker threads using AutoResetEvent signals, locks, and ownership checks.
Compares the Thread and BackgroundWorker classes in .NET, explaining when each fits and how BackgroundWorker builds on Thread with its DoWork event.
Walk through a C# example showing how an EventHandler can pass data back through EventArgs between an application layer and a presentation layer.
A follow-up exploring how C# events help decouple layered architecture, using an import example to show delegating decisions between components.
Understand why C# events add flexibility to your architecture, letting components react to conditions instead of hardcoding rigid method call sequences.
