private object item2; //КОМУ ПЕРЕВОДЯТ
 public WindowTransact(Bank <NaturalClient, LegalEnity, VipClient> Bank, object item)
 {
     this.item = item;
     this.Bank = Bank;
     InitializeComponent();
 }
 public AddWindowNaturalClient(Bank <NaturalClient, LegalEnity, VipClient> Bank)
 {
     this.Bank = Bank;
     InitializeComponent();
 }