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What is Validation in ASP.NET MVC?

Updated Apr 28, 2026

Short answer

Validation ensures data integrity before processing.

Deep explanation

ASP.NET MVC uses DataAnnotations for server-side validation and supports client-side validation.

Real-world example

Validating user registration forms.

Common mistakes

  • Relying only on client-side validation.

Follow-up questions

  • What is DataAnnotation?
  • Why validation?

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