Catel.Data.ModelBaseExtensions.AddModelValidation C# (CSharp) Метод

        private static void AddModelValidation(this ValidationContext validationContext, IModel model, List<IModel> handledModels)
        {
            Argument.IsNotNull("validationContext", validationContext);
            

            if (handledModels.Any(x => ReferenceEquals(x, model)))
            {
                return;
            }

            handledModels.Add(model);

            validationContext.SynchronizeWithContext(model.ValidationContext, true);

            var propertyDataManager = PropertyDataManager.Default;
            var catelTypeInfo = propertyDataManager.GetCatelTypeInfo(model.GetType());
            foreach (var property in catelTypeInfo.GetCatelProperties())
            {
                var propertyValue = model.GetValue(property.Key);
                var enumerable = propertyValue as IEnumerable;
                if (enumerable != null && !(propertyValue is string))
                {
                    foreach (var item in enumerable)
                    {
                        var modelItem = item as IModel;
                        if (modelItem != null)
                        {
                            validationContext.AddModelValidation(modelItem, handledModels);
                        }
                    }
                }

                var propertyModel = propertyValue as IModel;
                if (propertyModel != null)
                {
                    validationContext.AddModelValidation(propertyModel, handledModels);
                }
            }
        }
    }