How do I implement conditional rules in Fluent Validation?

How do I implement conditional rules in Fluent Validation?

You can implement conditional rules in Fluent Validation using the When method. This allows you to specify conditions under which certain rules should be applied.

Can you give me an example of using the When method?

Sure! Here's a simple example: RuleFor(x => x.Age).GreaterThan(18).When(x => x.IsAdult); This means the age rule only applies if IsAdult is true.

What if I want to apply multiple conditions?

You can chain conditions using When or use Unless for negation. For example: RuleFor(x => x.Name).NotEmpty().When(x => x.IsAdult && x.IsEmployed);.

Is there a way to group conditions?

Yes, you can use a custom method to encapsulate your conditions and call it within When. This keeps your validation logic clean and organized.