https://www.pistack.xyz/tags/value-objects/ Recent content in Value-Objects on Pi Stack Hugo en-us Sun, 05 Jul 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-07-05-csharp-validation-libraries-fluentvalidation-dataannotations-guardclauses-vogen/ Sun, 05 Jul 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-07-05-csharp-validation-libraries-fluentvalidation-dataannotations-guardclauses-vogen/ <h2 id="introduction">Introduction</h2> <p>Input validation is the first line of defense in any application. In the .NET ecosystem, developers have multiple approaches to validate data — from built-in DataAnnotations attributes to sophisticated fluent validation pipelines. Choosing the right validation strategy affects code maintainability, testability, and how early errors are caught in the request pipeline.</p>