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    <p>I'm guessing here since your question is a little vague that you're not quite sure how to hook the pieces together. For simplicity's sake let us hook the ViewModel directly to the user control and get it all binding.</p> <p>As long as your view model is populated with the correct set of People, all the binding below will handle the data and show the correct data. Take note of the two-way binding for the selected item in the combobox. That allows WPF to send back the new selected item to the viewmodel.</p> <p>In the UserControl's code behind:</p> <pre><code>public MyUserControl() { DataContext = new MyViewModel(); } </code></pre> <p>In the UserControl's XAML:</p> <pre><code>&lt;ComboBox ItemsSource="{Binding AllPeople}" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" /&gt; &lt;TextBox Text="{Binding SelectedItem.LastName}" /&gt; &lt;TextBox Text="{Binding SelectedItem.FirstName}" /&gt; &lt;TextBox Text="{Binding SelectedItem.EmailName}" /&gt; </code></pre> <p>Your ViewModel:</p> <pre><code>private IEnumerable&lt;Person&gt; _allPeople; public IEnumerable&lt;Person&gt; AllPeople { get { return _allPeople; } set { if (_allPeople != value) { _allPeople = value; NotifyPropertyChanged("AllPeople"); } } } private Person _selectedItem; public Person SelectedItem { get { return _selectedItem; } set { if (!_selectedItem != value) { _selectedItem = value; NotifyPropertyChanged("SelectedItem"); } } } private void NotifyPropertyChanged(string propertyName) { if ( PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName); } } } public class Person { public int PersonId { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public string Email { get; set; } } </code></pre>
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    1. POImplementing a simple Master-Detail scenario for WPF in MVVM
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    1. COThis code displays a correct solution, but it will not compile because it uses SelectedPerson and SelectedItem interchangably. The property should be changed to SelectedPerson for clarity.
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    2. COFixed. Changed the XAML to match the ViewModel. Thanks for picking it up.
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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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