C#: How to pass linq-objects around

c++datacontextlinq-to-sqlwpf

When showing my main window, I make a list of objects from linq-to-sql:

 using (var context = new Data.TVShowDataContext())
 {
    Shows = new ObservableCollection<Data.Show>(context.Shows);
    listShows.ItemsSource = Shows;
 }

Now, when I doubleclick an item in my list, I want to use the selected object in a new usercontrol:

 ShowEpList epList = new ShowEpList();
 epList.DataContext = (Data.Show)listShows.SelectedItem;

Now, this results in an exception:

System.ObjectDisposedException was unhandled
Message="Cannot access a disposed object.\r\nObject name: 'DataContext accessed after Dispose.'."
Source="System.Data.Linq"
ObjectName="DataContext accessed after Dispose."

I guess this comes as a result of binding a list to the shows season-list, and the season-list needs to be populated or something:

<ListBox Name="listSeasons" ItemsSource="{Binding Seasons}"/>

Now, what I would like to know, is how this is supposed be done?
Would I need to make a new DataContext-object and retrieve the selected show again, or is it possible to re-conntect my show with a new datacontext to populate the seasons-list?

I guess I'm a little lost….

Best Solution

Do not use a "using" statement with your datacontext. Please refer to this post: Disposing DataContext