Was 24 Jahre WinForms über Technologieentscheidungen für langlebige Software lehren Vor einiger Zeit habe ich darüber geschrieben, warum ich C# WinForms noch lange nicht für tot halte. Damals ging es vor allem…
Field Note: Warum lineare Suche in Joins nicht mit Review-Kommentaren stirbt — und wie du mit List vs. Dictionary vs. Set in der Signatur Laufzeit in den Vertrag legst, mit Anti-Patterns und…
Warum ein Export minutenlang braucht, obwohl die Datei unschuldig ist. Viele langsame Exporte werden zuerst an der falschen Stelle gesucht. Die Datei ist gross. Die Library ist bekannt dafür, mit vielen Zeilen…
A Deep-Dive with Real Chrona Code Examples Many WPF applications begin with direct MessageBox.Show(...) calls. At first, this feels completely reasonable. A save confirmation here, an error dialog there, a warning before…
A Production-Grade Architecture Walkthrough from Chrona Most WPF + MVVM tutorials online demonstrate only the happy path. One ViewModel. One command. One view switch. That is useful for learning the basics, but…
Interfaces, Abstract Base Classes, Safe SQL, and Audit-Aware Persistence in Chrona Desktop applications often start with direct database access inside view models, commands, or small helper classes. At first, this looks efficient.…
From Ad-Hoc Export Logic to Maintainable Export Pipelines Export functionality is one of the most underestimated architectural concerns in desktop applications. Most systems begin with a simple requirement: “We need a PDF…
Designing Explainable Change History with JSON Snapshots Most applications can save data. Far fewer can explain what changed, when it changed, and why the current state looks the way it does. That…
Building a Desktop Application Like a Service-Oriented System Desktop applications do not fail because of XAML. They fail because architecture is postponed until complexity arrives. WPF remains one of the most powerful…
Modern business applications rarely stay limited to a single export format. What usually begins as a simple “Export to CSV” button often evolves into a much broader requirement landscape: At first, these…
C# is one of the most versatile and beginner-friendly programming languages available today. It powers everything from enterprise applications and cloud solutions to video games (thanks to Unity) and mobile apps. But…
Choosing the right dependency injection (DI) lifetime is essential for the performance, stability, and maintainability of .NET applications. This guide breaks down the three main DI lifetimes—Transient, Scoped, and Singleton—to help you…
When you hear about desktop application development in 2025, you might think of modern frameworks like .NET MAUI, WPF, or cross-platform solutions like Electron and Flutter. But surprisingly, C# Windows Forms (WinForms)…
Polymorphism is a fundamental concept in object-oriented programming (OOP) that allows objects to be treated as instances of their parent class rather than their actual derived class. This makes your code more…
Delegates in C# are a cornerstone of functional programming, enabling developers to pass methods as arguments, define callbacks, and create flexible, reusable code. Among the most commonly used delegates are Action, Func,…
For anyone delving into the world of C# and .NET development, C# in a Nutshell by Joseph and Ben Albahari has become a gold standard. Renowned for its concise, in-depth, and approachable…
In C#, the variety of collection interfaces and classes can sometimes be overwhelming, especially for developers new to the language. Understanding the differences between IEnumerable, ICollection, IList, and List is crucial for…
When it comes to learning .NET development, finding a concise, practical, and easy-to-follow resource can be challenging. This is where DotNetPerls shines. As a trusted repository of .NET programming examples and performance…
HTML parsing is a common task in web development, whether you’re building a web scraper, processing data from web pages, or manipulating HTML documents. While it might be tempting to rely on…
In many applications, there is a need to persist key-value pairs in storage for later retrieval, beyond the lifetime of the application. A persistent dictionary provides this capability. In this blog post,…
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