/// <summary>
/// Defines a custom validator that is executed after an an item of the
/// selected collection has changed.
/// </summary>
/// <remarks>
/// The validator is also executed when a revalidation is performed, the
/// VM is added to/removed from a collection or any descendant VM has
/// changed (a property or its validation state).
/// </remarks>
public void Custom(Action <CollectionValidationArgs <TOwnerVM, TItemVM> > validationAction)
{
_operation.PushValidatorBuildActions(
DelegateValidator.For(validationAction),
ValidationStep.ViewModel
);
}
/// <summary>
/// Defines a custom validator that is executed every time the selected
/// property is about to change.
/// </summary>
/// <remarks>
/// The validator is also executed when a revalidation is performed, or
/// the VM is added to/removed from a collection.
/// </remarks>
public void Custom(IValidator validator)
{
_operation.PushValidatorBuildActions(
validator,
ValidationStep.Value
);
}