private void InvertSelectionMenuItemClick(object sender, EventArgs e)
{
for (int i = 0; i < TracksListBox.Items.Count; i++)
{
TracksListBox.SetSelected(i, !TracksListBox.GetSelected(i));
}
}
private void SelectAllMenuItemClick(object sender, EventArgs e)
{
if (TracksListBox.SelectionMode != SelectionMode.One)
{
for (int i = 0; i < TracksListBox.Items.Count; i++)
{
TracksListBox.SetSelected(i, true);
}
}
}