How does validation work in ASP.NET Core Identity?

How does validation work in ASP.NET Core Identity?

In ASP.NET Core Identity, validation is primarily handled through data annotations and custom validation attributes. You can use attributes like [Required], [EmailAddress], and [StringLength] to enforce rules on user input.

Can I create custom validation rules?

Yes, you can create custom validation attributes by inheriting from the ValidationAttribute class. This allows you to define your own logic for validation.

What happens if validation fails?

If validation fails, the model state will be invalid, and you can return error messages to the user, typically through the UI.

Is there a way to validate user input asynchronously?

Yes, you can implement asynchronous validation by overriding the IsValid method in your custom validation attribute and using async calls.