What are some effective validation techniques in MVC?

What are some effective validation techniques in MVC?

In MVC, you can use techniques like data annotations, custom validation attributes, and model binding validation.

Can you explain how data annotations work?

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

What if I need more complex validation?

For complex validation, you can create custom validation attributes or implement IValidatableObject for model-level validation.

Are there any built-in validation methods in ASP.NET MVC?

Yes, ASP.NET MVC provides built-in methods like ModelState.IsValid to check if the model passes all validation rules.