CODEWITHSUNDEEP
c#wpfdatabaseentity-frameworklistbox
user2376998
user2376998

Reputation: 1071

Populating a ListBox from database

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 :

enter image description here

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" />

Upvotes: 0

Views: 313

Answers (1)

yo chauhan
yo chauhan

Reputation: 12315

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

I hope this will help.

Upvotes: 1

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