How can I implement Fluent Validation in my ASP.NET MVC project?

How can I implement Fluent Validation in my ASP.NET MVC project?

You can implement Fluent Validation by installing the FluentValidation.AspNetCore package and creating validation classes for your models.

Can you show me an example of a validation class?

Sure! Here's a simple example:

public class UserValidator : AbstractValidator<User>
{
    public UserValidator()
    {
        RuleFor(user => user.Name).NotEmpty().WithMessage("Name is required.");
        RuleFor(user => user.Email).EmailAddress().WithMessage("Invalid email format.");
    }
}

How do I integrate this validator with my controller?

In your controller, you can use dependency injection to include the validator and call it in your action methods to validate the model.

What if the validation fails?

If validation fails, you can return the validation errors to the view using ModelState, allowing you to display error messages to the user.