private void RelevanceData()
{
var libItemsCount = lvLibItems.Items.Count;
double step = libItemsCount / 100;
var time = DateTime.Now;
log.Write($"{ time.ToString() }");
log.Write($"> Find relevance where libItems count = {lvLibItems.Items.Count} ");
// var relevance = new Relevance(lvLibItems.Items.Cast<ListViewItem>().Select(item => (LibItem)item.Tag).ToList());
var relevance = new Relevance(libItems);
var relevanceItems = relevance.GetRelevance();
deletedLibItems.AddRange(libItems.Except(relevanceItems).ToList());
libItems = relevanceItems;
LoadLibItems();
log.Write($"{ (DateTime.Now - time).TotalSeconds.ToString() } sec.");
log.Write("____________________");
pbLoadUniqueData.Value = 100;
MessageBox.Show("Готово!");
pbLoadUniqueData.Value = 0;
}