What property is checked in custom validation?

The property relevant to custom validation is the validity of the form, which is represented by the "Form.Valid" property. This property indicates whether the form data adheres to defined validation rules, ensuring that all inputs are valid before further processing, such as submission or data handling.

When implementing custom validation, developers often need to determine if the input meets specific criteria. The "Form.Valid" property provides a straightforward way to check this, allowing for a clear assessment of the overall status of the form in terms of validation.

In contrast to "Form.Fields," which refers to the individual inputs within the form, "Form.Status" that might represent the current state of the form (like submitting or idle), and "Form.Errors," which typically contains specific error messages related to invalid fields, these options do not directly convey whether the entire form is valid as a whole. Hence, "Form.Valid" is the critical property to consider for confirming successful custom validation.