Databases
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    <p>Let's say you have a QueueView that uses a QueueViewModel.</p> <pre><code>public class QueueViewModel : INotifyPropertyChanged { public ParentType Parent { get; set; } public QueueViewModel(ParentType parent) { this.Parent = parent; foreach (ChildType child in Parent) { child.PropertyChanged += delegate(object sender, PropertyChangedEventArgs e) { if (e.PropertyName != "IsSelected") return; //do something like this: Parent.IsSelected = AllChildrenAreSelected(); }; } } } public class ParentType : INotifyPropertyChanged { private bool _isSelected; public IList&lt;ChildType&gt; Children { get; set; } public bool IsSelected { get { return _isSelected; } set { _isSelected = value; OnPropertyChanged("IsSelected"); } } } public class ChildType : INotifyPropertyChanged { private string _name; private bool _isSelected; public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } public bool IsSelected { get { return _isSelected; } set { _isSelected = value; OnPropertyChanged("IsSelected"); } } } </code></pre> <p>-- QueueView part</p> <pre><code>&lt;StackPanel&gt; &lt;CheckBlock Text="{Binding Path=Parent.Name}" IsChecked="{Binding Parent.IsSelected}"/&gt; &lt;ItemsControl ItemsSource="{Binding Path=Parent.Children}"&gt; &lt;ItemsControl.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;CheckBox Content="{Binding Path=Name}" IsChecked="{Binding Path=IsSelected, Mode=TwoWay}"/&gt; &lt;/DataTemplate&gt; &lt;ItemsControl.ItemTemplate&gt; &lt;/ItemsControl&gt; &lt;/StackPanel&gt; </code></pre>
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    1. POMVVM Pattern, ViewModel DataContext question
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    1. USSoni Ali
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    1. COYour code samples don't really seem related to the question. Did one or both of us miss the point?
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      1. USJosh G
    2. COI was assuming that the Child Model was a property of the Parent Model. (e.g. Order + List of Order Details). In which case you can use Property-Change notifications to communicate within the view model. But if they are separate view models, you can use the Mediator Pattern to communicate.
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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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