ListBox lb = new ListBox();
object[] selected_objs = new object[lb.SelectedItems.Count];
lb.SelectedItems.CopyTo(selected_objs, 0);
foreach (object oval in selected_objs)
{
lb.Items.Remove(oval);
}
ListBox lb = new ListBox();
object[] selected_objs = new object[lb.SelectedItems.Count];
lb.SelectedItems.CopyTo(selected_objs, 0);
foreach (object oval in selected_objs)
{
lb.Items.Remove(oval);
}