如何在XAML列表框中更新不同类型的项目？

Question

I'm working on a WPF application in C#. The application has 3 different UserControls (Foo1, Foo2 and Foo3), each one has at least one TextBox. On the main window, there's a ListBox that has these UserControls as its items; all in different quantities and in no particular order.

If I change the Text property on any of these item's TextBoxes, the change is not visible until the ListBox.Items collection is changed (ie an item is added or removed).

How do I get the ListBox to update? I've tried giving the UserControls dependency properties (with the flag FrameworkPropertyMetadataOptions.AffectsRender) that updates the textbox's text, but that didn't do anything. Implementing INotifyPropertyChanged and invoking the PropertyChanged event had no effect either.

Answer 1

I am able to change the Text, this changed Text appears in ListBox without problems.

UserControl :

public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
            this.DataContext = this;
        }

        public string Text
        {
            get { return (string)GetValue(TextProperty); }
            set { SetValue(TextProperty, value); }
        }

        // Using a DependencyProperty as the backing store for Text.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TextProperty =
            DependencyProperty.Register("Text", typeof(string), typeof(UserControl1), new PropertyMetadata("unset"));

    }

Window1 :

public partial class Window1 : Window
{
    IList<UserControl1> ucList = new[] { new UserControl1() { Text = "some text" }, new UserControl1() { Text = "some more value" } };

    public Window1()
    {
        InitializeComponent();

        LstBox.ItemsSource = ucList;
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        ucList[0].Text = DateTime.Now.ToString();
        /* Now textbox shows current date-time */
    }
}