Hi,

I have created the following page validator:

public class MyValidator : IValidate
{
    public IEnumerable Validate(MyPage instance)
    {
        if (...)
        {
            yield return new ValidationError
            {
                ErrorMessage = "My message",
                PropertyName = "MyProperty",
                Severity = ValidationErrorSeverity.Error,
                ValidationType = ValidationErrorType.Unspecified
            };
        }
    }
}

Everything works fine, I cannot publish the page, I get "My message" in validation summary, etc.
But how can I mark MyProperty as invalid (red border and error message next to it)?

Do I have to use a custom attribute on top of MyProperty?

Episerver 9.8.

Thanks!