CODEWITHSUNDEEP
c#
Martina Princente
Martina Princente

Reputation: 37

Add data from a list to a ListBox C#

I have list, listbox, button and a textbox.

My idea is to make that by clicking on the button, the content of the textbox is added to the list, and then pass the data to a listbox.

My problem is, if you add what I write, but the items that are in the listbox are overwritten by the new one that you insert. and I want only more items added. to the list and to go to the listbox. Thank you very much for your answers. This is the code of my button:

private void button54_Click(object sender, RoutedEventArgs e)
{
    List<Playlists> List1 = new List<Playlists>();
    List1.Add(new Playlists(textBox3.Text, @rutaalbum));
    lbListbox.ItemsSource = List1;
}

Upvotes: 0

Views: 232

Answers (2)

Bent Tranberg
Bent Tranberg

Reputation: 3470

I am just making a demo stand in for your Playlists class.

ToString has been overridden in order to display some text in the listbox. Without it, you will only display the class name.

ObservableCollection is used instead of List, so that the listbox updates when a new item is added.

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        MyList = new ObservableCollection<Playlists>();
        MyListBox.ItemsSource = MyList;
    }

    private ObservableCollection<Playlists> MyList { get; }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        MyList.Add(new Playlists(textBox3.Text));
    }
}

public class Playlists
{
    public Playlists(string title) { Title = title; }
    public string Title { get; }
    public override string ToString() { return Title; }
}

Upvotes: 2

user9405863
user9405863

Reputation: 1514

It seems , you are always creating items with new list. need to add items to existing list.

use below code. it would be useful.

private void button54_Click(object sender, RoutedEventArgs e) {            
     lbListBox.Items.Add(new Playlists(textBox3.Text, @rutaalbum));       

}

Upvotes: 1

Related Questions