Problem with WPF Data Binding Defined in Code Not Updating UI Elements

Question

I need to define new UI Elements as well as data binding in code because they will be implemented after run-time. Here is a simplified version of what I am trying to do.

Answer 1

Make sure you're updating the AddressBook reference that was used in the binding, and not some other AddressBook reference.

I got the following to work with the AddressBook code you gave.

    Random
    
    

Code behind:

public partial class Window1 : Window
{
    private AddressBook book;

    public Window1()
    {
        InitializeComponent();

        book = new AddressBook();
        book.HouseNumber = 13;

        TextBlock tb = new TextBlock();
        Binding bind = new Binding("HouseNumber");
        bind.Source = book;
        tb.SetBinding(TextBlock.TextProperty, bind);
        myGrid.Children.Add(tb);
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        Random rnd = new Random();
        book.HouseNumber = rnd.Next();
    }
}

Note the same reference is used in the update code.