public async void FindCommandClick(object sender)
 {
     try
     {
         FindHandler find = new FindHandler();
         rs = new Model.RentalShopEntities();
         List <int> tmp = new List <int>();
         FreeCassetes.Clear();
         foreach (var item in find.FindTitle(FindHandler.FieldType.Title, FindArg))
         {
             foreach (var copyItem in rs.Cassete_Copies)
             {
                 if (item != null && copyItem.Catalog_Id == item.Catalog_Id && copyItem.Status != "busy" && !tmp.Contains(copyItem.Catalog_Id))
                 {
                     tmp.Add(copyItem.Catalog_Id);
                     p.Dispatcher.Invoke(() =>
                     {
                         FreeCassetes.Add(new CasseteShortInfo
                         {
                             Cover = API.Image.ByteArrayToImage(item.Cover),
                             Id    = item.Catalog_Id,
                             Name  = item.Title
                         });
                     });
                 }
             }
         }
         tmp.Clear();
     }
     catch (Exception e)
     {
         MessageBox.Show(e.Message);
     }
 }
        private async void FindCommandClick(object sender)
        {
            Cassetes.Clear();
            if (_inputtext != null && _inputtext != "")
            {
                FindHandler find = new FindHandler();
                switch (SelectedArg)
                {
                case "Название":
                    foreach (var item in find.FindTitle(FindHandler.FieldType.Title, _inputtext))
                    {
                        Cassetes.Add(new CasseteShortInfo
                        {
                            Cover = API.Image.ByteArrayToImage(item.Cover),
                            Id    = item.Catalog_Id,
                            Name  = item.Title
                        });
                    }
                    break;

                case "Режиссер":
                    foreach (var item in find.FindTitle(FindHandler.FieldType.Director, _inputtext))
                    {
                        Cassetes.Add(new CasseteShortInfo
                        {
                            Cover = API.Image.ByteArrayToImage(item.Cover),
                            Id    = item.Catalog_Id,
                            Name  = item.Title
                        });
                    }
                    break;

                case "Цена":
                    foreach (var item in find.FindTitle(FindHandler.FieldType.Price, _inputtext))
                    {
                        Cassetes.Add(new CasseteShortInfo
                        {
                            Cover = API.Image.ByteArrayToImage(item.Cover),
                            Id    = item.Catalog_Id,
                            Name  = item.Title
                        });
                    }
                    break;

                case "Отдел":
                    foreach (var item in find.FindTitle(FindHandler.FieldType.Departament, _inputtext))
                    {
                        Cassetes.Add(new CasseteShortInfo
                        {
                            Cover = API.Image.ByteArrayToImage(item.Cover),
                            Id    = item.Catalog_Id,
                            Name  = item.Title
                        });
                    }
                    break;
                }
            }
        }