How to set auto-refresh for master detail datagridview bound to entity framework?

Posted by Dharshini88 under C# on 3/7/2013 | Points: 10 | Views : 1901 | Status : [Member] | Replies : 0
I am developing a WPF Master detail application. I would like to auto refresh my page every 5 secs. I have used a Dispatcher to achieve this. everything works fine, but the selected item is highlighted only for those 5 seconds, after 5 secs the default selected row is being displayed on the top replacing my selecteditem.

I have tried setting the issynchronizedwithcurrentitem="False", but with this set to false, the selecteditem ( for Master-detail scenario) doesn't work.

this is what I have tried,

 public partial class MainWindow : Window
WpfApplication1.PersonsEntities personsEntities;
System.Windows.Data.CollectionViewSource personViewSource;
System.Data.Objects.ObjectQuery<WpfApplication1.person> personQuery;

public MainWindow()

private ObjectQuery<person> GetpersonQuery(PersonsEntities personsEntities)
var personQuery = personsEntities.person;
return personQuery as ObjectQuery<person>;

private void Window_Loaded(object sender, RoutedEventArgs e)
DispatcherTimer dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
dispatcherTimer.Interval = new TimeSpan(0, 0, 5);

protected void dispatcherTimer_Tick(object sender, EventArgs e)
personsEntities = new WpfApplication1.PersonsEntities();
personViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("personViewSource")));
personQuery = this.GetpersonQuery(personsEntities);
personViewSource.Source = personQuery.Execute(System.Data.Objects.MergeOption.AppendOnly);

Kindly help with this issue


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