private void RequestAnswerer_UpdateList()
{
RequestAnswerer_ListBox.Enabled = RequestAnswerer_Listener.IsActive;
PeerConnection[] l1, l2;
l1 = RequestAnswerer_Listener.GetPendingRequests();
List<PeerConnection> l1l = new List<PeerConnection>(l1);
ListBox.ObjectCollection l2r = RequestAnswerer_ListBox.Items;
l2 = new PeerConnection[l2r.Count];
// Copy l2r to l2.
for (int i = 0; i < l2r.Count; i++)
l2[i] = (PeerConnection)l2r[i];
// Remove
foreach (PeerConnection item in l2)
if (!l1l.Contains(item))
l2r.Remove(item);
// Add
for (int i = 0; i < l1l.Count; i++)
{
PeerConnection l1o = l1[i];
PeerConnection l2o = i <= l2.GetUpperBound(0) ? l2[i] : null;
if (l1o.GreetingReceived && (l2o == null || l1o != l2o))
{
l2r.Add(l1o);
if (i == l1l.Count - 1)
RequestAnswerer_ListBox.SelectedItem = l1o;
}
}
}