public static void Close()
 {
     IsFinish = false;
     displayForm.Close();
     displayForm = null;
     timer.Stop();
     Model  = null;
     isWork = false;
 }
 public static void Execute(ItemModel model)
 {
     if (IsWork)
     {
         MessageBox.Show("Zaten çalışan bir kayıt var.", "HATA", MessageBoxButtons.OK, MessageBoxIcon.Error);
         return;
     }
     isWork        = true;
     Model         = new ExecuteModel();
     Model.Finish += Model_Finish;
     Data          = model.Data;
     Motor();
     displayForm            = new Forms.ExecuteForm();
     displayForm.TotalValue = Model.GetValueCount;
     displayForm.Show();
     OldClipboard = "";
     Clipboard.Clear();
     if (IsSetup)
     {
         timer.Tick += Timer_Tick;
         IsSetup     = false;
     }
     timer.Start();
 }