Populating a ListBox from database

Question

I am using Entity Framework to retrieve records from the database. My user control page crashes every time I run it, but after I comment out the lines in BindLstBox method; my user control page runs well. Is there anything wrong with this code? (DAOActivity is a class file which have CRUD codes in it. I suppose there is nothing wrong there.) It shows this error when i try to run :

'The invocation of the constructor on type 'iStellar.home' that matches the specified binding constraints threw an exception.' Line number '5' and line position '14'.

Heres the screenshot of the error :

DAO.DAOActivity daoActivity = new DAO.DAOActivity();

public home()
{
    InitializeComponent();
    BindListBox();
}

public void BindListBox()
{
    listBox1.ItemsSource = daoActivity.GetAll();
    listBox1.DisplayMemberPath = "ActivityName";
    listBox1.SelectedValuePath = "ActivityID";           
}

My XAML :

  <ListBox Height="534" HorizontalAlignment="Left" Margin="218,415,0,0"
           Name="listBox1" VerticalAlignment="Top" Width="512" />

Answer 1

 Application.Current.Dispatcher.BeginInvoke(
         DispatcherPriority.Background,
            new Action(() =>
            {
                listBox1.ItemsSource = daoActivity.GetAll();
                listBox1.DisplayMemberPath = "ActivityName";
                listBox1.SelectedValuePath = "ActivityID";
            }));

I hope this will help.