Databases
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    <p>I'm no WPF expert but I'm wondering why you would use the dispatcher object for this functionality surely you could just do this?</p> <pre><code>private void SetActiveTab(TabType type) { loaderTabs.SelectedIndex = (int)type; } </code></pre> <p>EDIT:</p> <p>Ok I fully understand now why you would use the dispatcher duh. I tried the bits on your code while processing on a seperate thread and it worked for me. </p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Threading; using System.ComponentModel; namespace WpfApplication1 { /// &lt;summary&gt; /// Interaction logic for MainWindow.xaml /// &lt;/summary&gt; public partial class MainWindow : Window { private BackgroundWorker _worker; public MainWindow() { InitializeComponent(); _worker = new BackgroundWorker(); _worker.DoWork += new DoWorkEventHandler(_worker_DoWork); _worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(_worker_RunWorkerCompleted); } void _worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { MessageBox.Show("Done"); } void _worker_DoWork(object sender, DoWorkEventArgs e) { Thread.Sleep(5000); } private void SetActiveTab(TabType type) { loaderTabs.Dispatcher.Invoke((Action)(() =&gt; { //This is where the error happens when I try set the active tab back to tab1 loaderTabs.SelectedIndex = (int)type; })); } public void Login(string userName, string password) { try { SetActiveTab(TabType.Loader); //Processing... _worker.RunWorkerAsync(); } catch (Exception) { SetActiveTab(TabType.Login); } } enum TabType {Login, Loader}; private void Button_Click(object sender, RoutedEventArgs e) { Login("user", "password"); } } } </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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