how to update listbox from another window

Question

I've got a AddWindow to add new client, the MainWindow (which is always showed) and I want to send the information from Addwindow to ListBox in MainWindow (I mean i need to add new item to listbox).

Someone knows how can I do that?

Answer 1

You can do that with events of that object like this :

 public partial class AddWindow : Window
{
    public AddWindow()
    {
        InitializeComponent();

    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        if (Check != null)
            Check(TextBox.Text);
    }


    public event Action<string> Check;


}

and in main window

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();  

    }


    private void Button_Click(object sender, RoutedEventArgs e)
    {
        AddWindow popup = new AddWindow();
        popup.Check += popup_Check;
        popup.Show();

    }

    void popup_Check(string obj)
    {
        ListBox.Items.Add(obj);
    }
}