protected override void OnInitialized()
 {
     if (CurrentEditContext == null)
     {
         throw new InvalidOperationException($"{nameof(DataAnnotationsValidator)} requires a cascading " +
                                             $"parameter of type {nameof(EditContext)}. For example, you can use {nameof(DataAnnotationsValidator)} " +
                                             $"inside an EditForm.");
     }
     CurrentEditContext.SetFieldCssClassProvider(provider);
 }