Most top-ranking websites fail HTML validation. Google explains why perfect code isn’t required, and what matters instead.

In a future post here, we’ll look at how data annotation can be used in ASP.NET Core MVC applications to perform model validation. How to do more in C# When to use an abstract class vs ...

While validation, on the whole, can help you immensely, it is not always going to be 100% complete. This is why it’s important to familiarize yourself by coding with the validator as much as you ...

When working with applications in ASP.NET Core 6 you will often want to validate your models to ensure that the data they contain conform to the pre-defined validation rules. Enter model validation.

Separating validation code from business classes also reflects actual programming practice. In many cases, your business objects aren't what's used by your UI; instead, developers create a Data ...

Separating your validation code from your business class allows UI developers to apply your validation code to their DTOs and ViewModels. Data Annotations support this separation either by creating ...