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Newbie question regarding validation

See original GitHub issue

I am a beginner in MVVM and I am not sure which is the best approach:

I have some domain-level models, like User, Product, ProductGroup, etc. My ViewModels only have one one property which implements INPC, like this:

public ProductGroupViewModel(ProductGroup productGroup) : Screen
            _productGroup = productGroup;

        private ProductGroup _productGroup;
        public ProductGroup ProductGroup
            get => _productGroup;
                _productGroup = value;
                SetAndNotify(ref _productGroup, value);

In the View, all the binding is done like this, and this works: Text="{Binding ProductGroup.Name}"

I also use the same View / ViewModel to create a new ProductGroup and edit an existing one, through the contructor. But in this way, I cannot use Stylet IoC to inject the validator, because my contructing viewmodel does not know how to resolve such a constructor:

public ProductGroupViewModel(ProductGroup productGroup, IModelValidator<ProductGroupViewModel> validator) : base(validator)
        { ... }

What would be the recommended way to solve this issue? Thanks in advance.

Issue Analytics

  • State:closed
  • Created 6 years ago
  • Comments:28 (14 by maintainers)

github_iconTop GitHub Comments

hmihailcommented, May 25, 2017

Thanks alot! You have been a great help!

hmihailcommented, May 22, 2017

Thanks for your support!

Read more comments on GitHub >

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