Databases
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    <p>This uses the above ideas but makes it a derived 'more sensitive' collection:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ComponentModel; using System.Collections.ObjectModel; using System.Collections.Specialized; using System.Collections; namespace somethingelse { public class ObservableCollectionEx&lt;T&gt; : ObservableCollection&lt;T&gt; where T : INotifyPropertyChanged { // this collection also reacts to changes in its components' properties public ObservableCollectionEx() : base() { this.CollectionChanged +=new System.Collections.Specialized.NotifyCollectionChangedEventHandler(ObservableCollectionEx_CollectionChanged); } void ObservableCollectionEx_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) { if (e.Action == NotifyCollectionChangedAction.Remove) { foreach(T item in e.OldItems) { //Removed items item.PropertyChanged -= EntityViewModelPropertyChanged; } } else if (e.Action == NotifyCollectionChangedAction.Add) { foreach(T item in e.NewItems) { //Added items item.PropertyChanged += EntityViewModelPropertyChanged; } } } public void EntityViewModelPropertyChanged(object sender, PropertyChangedEventArgs e) { //This will get called when the property of an object inside the collection changes - note you must make it a 'reset' - dunno why NotifyCollectionChangedEventArgs args = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset); OnCollectionChanged(args); } } } </code></pre>
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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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