Databases
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    <p>I think you may be confused about how data binding works. When you bind a property, you are telling WPF to go look somewhere else for the value of that property.</p> <p>When you bind the <code>ListBox.ItemsSource</code> property to <code>currentMyItems</code>, you are telling WPF to go look at the <code>currentMyItems</code> list to find its list of items. If <code>currentMyItems</code> is an <code>ObservableCollection</code> instead of a <code>List&lt;T&gt;</code>, then the UI will automatically receive a notification to update the bound value when you add or remove an item from the collection.</p> <p>Based on what you say in the question, it sounds like you you have two collections, one of which is bound, and the other which is used to recreate the first collection anytime a change occurs. All that is not needed.</p> <p>Just create one <code>ObservableCollection&lt;MyItem&gt;</code>, bind it to the <code>ListBox.ItemsSource</code> property, and then add or remove items from that single collection. It should work as you would expect.</p> <pre><code>&lt;ListBox x:Name="listMyItems" ItemsSource="{Binding MyItems}" /&gt; </code></pre> <p>and</p> <pre><code>MyItems.Add((MyItem)listMyItems.SelectedItem) MyItems.Remove((MyItem)listMyItems.SelectedItem) </code></pre> <p>If you're interested, I also have some beginner articles on my blog for WPF users who are struggling to understand the DataContext. You may want to check out <a href="http://rachel53461.wordpress.com/2012/10/12/switching-from-winforms-to-wpfmvvm/" rel="noreferrer">Understanding the change in mindset when switching from WinForms to WPF</a> and <a href="http://rachel53461.wordpress.com/2012/07/14/what-is-this-datacontext-you-speak-of/" rel="noreferrer">What is this “DataContext” you speak of?</a></p>
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    1. COThank you, very good explanation!
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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