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  1. PO
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    <p>Try such changes</p> <pre><code>public class OwnerOccupierAccountViewModel : ViewModelBase { /// &lt;summary&gt; /// Load combobox structures /// &lt;/summary&gt; private readonly LoadOperation&lt;Structure&gt; _loadStructures; private readonly LoadOperation&lt;UnitOccupierDetail&gt; _loadUnitOccupierDetails; //public ICommand SaveAccountSettingsCommand { get; set; } #region Properties private ObservableCollection&lt;Structure&gt; _structures; public ObservableCollection&lt;Structure&gt; Structures { get { return _structures; } set { _structures = value; RaisePropertyChanged("Structures"); } } private Structure _userStructure; public Structure UserStructure { get { return _userStructure; } set { _userStructure = value; RaisePropertyChanged("UserStructure"); } } private UnitOccupierDetail _unitOccupierDetail; public UnitOccupierDetail UnitOccupierDetail { get { return _unitOccupierDetail; } set { _unitOccupierDetail = value; RaisePropertyChanged("UnitOccupierDetail"); } } #endregion public OwnerOccupierAccountViewModel() { // SaveAccountSettingsCommand = new DelegateCommand(SaveAccountSettings, CanSave); UserAccountContext _userAccountContext; if (!DesignerProperties.IsInDesignTool) { var loggedInUser = new Guid(WebContext.Current.User.UserID.ToString()); _userAccountContext = new UserAccountContext(); #region load structures _loadStructures = _userAccountContext.Load(_userAccountContext.GetStructuresQuery()); _loadStructures.Completed += _loadStructuresCompleted; #endregion #region load user data _loadUnitOccupierDetails = _userAccountContext.Load( _userAccountContext.GetUnitOccupierDetailsQuery().Where( u =&gt; u.UserIDFK == loggedInUser &amp;&amp; u.StructureFK == 92)); _loadUnitOccupierDetails.Completed += _loadUnitOccupierDetails_Completed; #endregion } } void _loadUnitOccupierDetails_Completed(object sender, EventArgs e) { _unitOccupierDetail= new UnitOccupierDetail(); _unitOccupierDetail = _loadUnitOccupierDetails.Entities.First(); _userStructure = _unitOccupierDetail.Structure; } void _loadStructuresCompleted(object sender, EventArgs e) { var theseStructures = new ObservableCollection&lt;Structure&gt;(_loadStructures.Entities); Structures = theseStructures; } //private void SaveAccountSettings(object param) //{ //} //private static bool CanSave(object param) //{ // return true; //} } &lt;ComboBox x:Name="cboApartments" ItemsSource='{Binding Structures, Mode=TwoWay}' DisplayMemberPath='StructureName' SelectedValuePath='IDStructure' SelectedItem='{Binding UserStructure,Mode=TwoWay}' Width="200" Height="25"&gt; </code></pre> <p><strong>Updated:</strong></p> <p>Hmm, maybe try changes here:</p> <pre><code> &lt;ComboBox x:Name="cboApartments" ItemsSource='{Binding Structures, Mode=TwoWay}' SelectedItem='{Binding UserStructure, Mode=TwoWay}' Width="200" Height="25"&gt; &lt;ComboBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;TextBlock Text="{Binding Path=StructureName}"/&gt; &lt;/DataTemplate&gt; &lt;/ComboBox.ItemTemplate&gt; &lt;/ComboBox&gt; </code></pre>
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    1. POSilverlight Combobox - Setting the SelectedItem MVVM
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    1. USPawelSt
    1. USPawelSt
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    1. COHi Pawel - I made 2 corrections : RaisePropertyChanged("UserStructure"); and SelectedItem='{Binding UserStructure,Mode=TwoWay}' .... The combobox wont bind
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    2. COI added new proposal for your problem
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    3. COHi Pawel - I replaced the combobox with your code - still not binding
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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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