private void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) {
lvIcons.BeginUpdate();
lvIcons.Items.Clear();
foreach (IconFile icon in _Icons) {
lvIcons.Items.Add(new ListViewItem("#" + icon.Index.ToString()) { Tag = icon.Index });
}
lvIcons.EndUpdate();
pbProgress.Visible = false;
}