What are the best practices for validation in ASP.NET MVC?

What are the best practices for validation in ASP.NET MVC?

The best practices for validation in ASP.NET MVC include using data annotations, implementing custom validation attributes, and leveraging client-side validation.

Can you explain how data annotations work?

Data annotations are attributes you can apply to model properties to enforce validation rules, like [Required], [StringLength], and [Range].

How do I implement custom validation attributes?

To create a custom validation attribute, inherit from ValidationAttribute and override the IsValid method to define your validation logic.

What about client-side validation? How does it work?

Client-side validation in ASP.NET MVC uses jQuery Unobtrusive Validation, which automatically applies validation rules defined in your model to the client-side.