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POAssociation property in DomainCollectionView and WCF RIA Services
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  1. POAssociation property in DomainCollectionView and WCF RIA Services
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    copied!<p>I have a association in my poco class, ex:</p> <pre><code>public class Category() { [Key] public int id { get; set} public string Name { get; set; } /* HERE */ public virtual ICollection&lt;Book&gt; Books {get; set;} } public class Book() { [Key] public int id { get; set} public string Name { get; set; } } </code></pre> <p>I use MVVM patern, MVVM Light and RIA Services Toolkit. My Domain Service implementation contains a method GetCategories that include their books, ex:</p> <pre><code>public IQueriable&lt;Category&gt; GetCategories() { return Model.Categories.Include("Books").OrderBy(pCategory =&gt; pCategory.Name); } </code></pre> <p>In my ViewModel I have a DomainCollectionView that load GetGruposQuery. I also have a property for bind a grid and other controls, like:</p> <pre><code>public ICollectionView CollectionViewCategories { get { return myDomainCollectionViewCategories;} } </code></pre> <p>I need get a child property CollectionView.Books for bind my controls and ADD, REMOVE itens in view, but this property is only EntityCollection and isn't a DomainCollectionView that contains methods for ADD, REMOVE, etc.</p> <p>How I can get the current Books property (of CollectionViewCategories) as DomainCollectionView in my ViewModel?</p> <p>Thank you!</p> <hr> <p>I solve this question with: (CollectionViewCategories.CurrentItem as Category).Books.Remove(CollectionViewBooks.CurrentItem as Book)</p> <pre><code>private ICollectionView CreateView(Object source) { CollectionViewSource cvs = new CollectionViewSource(); cvs.Source = source; return cvs.View; } //... //After CollectionViewCategories loaded: CollectionViewCategories.CurrentChanged += (s, e) =&gt; { if (CollectionViewCategories.CurrentItem != null) { CollectionViewBooks = CreateView(fContext.Categories.Where(p =&gt; p.Id == (CollectionViewCategories.CurrentItem as Category).Id).FirstOrDefault().Books); } else { CollectionViewBooks = null; } RaisePropertyChanged("CollectionViewBooks"); }; </code></pre>
 

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