Вот набросал проект как раз по той теме что тебе нужно посмотри как я делаю и поймешь:
| Код |
using System;
using System.Collections;
using System.IO;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class MainFrom : Form
{
public ArrayList playlist = new ArrayList();
public enum Track
{
Next, Back, Delete, Random
}
public MainFrom()
{
InitializeComponent();
}
private void Get_Track_Click(object sender, EventArgs e)
{
playlist.Clear();
Get_playlist();
Update_playList();
}
private void Delete_Track_Click(object sender, EventArgs e)
{
Play_List(Track.Delete);
}
private void Next_track_Click(object sender, EventArgs e)
{
Play_List(Track.Next);
}
private void Back_track_Click(object sender, EventArgs e)
{
Play_List(Track.Back);
}
private void Random_Track_Click(object sender, EventArgs e)
{
Play_List(Track.Random);
}
private void Play_List(Track change_event)
{
switch (change_event)
{
case Track.Next:
if (PlayListBox.SelectedIndex < PlayListBox.Items.Count - 1)
{
PlayListBox.SelectedIndex = PlayListBox.SelectedIndex + 1;
}
break;
case Track.Back:
if (PlayListBox.SelectedIndex > 0)
{
PlayListBox.SelectedIndex = PlayListBox.SelectedIndex - 1;
}
break;
case Track.Random:
if (PlayListBox.Items.Count > 0)
{
Random Random_Track = new Random();
int track_rnd = Random_Track.Next(0, PlayListBox.Items.Count);
PlayListBox.SelectedItem = PlayListBox.Items[track_rnd].ToString();
}
break;
case Track.Delete:
if (PlayListBox.Items.Count >= 0)
{
int index = PlayListBox.SelectedIndex;
playlist.Remove(PlayListBox.SelectedItem);
if (PlayListBox.Items.Count > 1)
{
if (index == 0) { index = 0; } else { index = index - 1; }
Update_playList();
PlayListBox.SelectedIndex = index;
}
else
{
Update_playList();
string[] text = play_status.Text.Split(':');
play_status.Text = text[0] + ": Список пуст!";
}
}
break;
}
}
private void Get_playlist()
{
playlist.AddRange(File.ReadAllLines("playlist.txt", Encoding.GetEncoding(1251)));
}
private void Update_playList()
{
BindingSource DataBind = new BindingSource();
DataBind.DataSource = playlist;
PlayListBox.DataSource = DataBind;
}
private void PlayListBox_SelectedIndexChanged(object sender, EventArgs e)
{
string[] text = play_status.Text.Split(':');
play_status.Text = text[0] + ": " + PlayListBox.SelectedItem;
}
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show("*****Тут твоя функция для воспроизведения*****\n\r\n\r" + "Выбран элемент: " + PlayListBox.SelectedItem.ToString());
}
}
}
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А вот сам проект:
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