serialization question

[beginner91]

I am making a media player using a windows form application project in mircosoft visual studio. So far I am able to display songs in a listbox,play, pause etc and now I want to be able to make playlists for the songs. I have two forms - one with buttons to play, pause stop all the songs, and display the songs and the second is for making the playlists. In the playlist form there is two listboxs - one with a list of the songs in the playlist and the second for the songs you add to the playlist. theres is also an add button and remove button and a textbox to put the name of the playlist in. And finally a create button. So I need a bit of help creating the playlist. heres the code I have so far for the create button:

private void button1_Click(object sender, EventArgs e) //create playlist
        {
            Playlist temp = new Playlist(textBoxPlaylist.Text); 
            foreach(string name in PlaylistTracks.Items)
            {
                temp.addSong(name);
           
            }

        }

so far nothing happens when I click the button. I need the playlist to save the songs in the listbox and the name in the textbox. I also have a listbox in the first form that I want to populate with the names of the playlists that have been created. Not sure what code to use to do that.
Hope I explained all this enough