public NewCustomerView(Customer customer, SaveCustomerCommand saveCommand, DeleteAllCommand deleteCommand)
		{
			InitializeComponent();

			DataContext = this;

			CurrentCustomer = customer;
			SaveCommand = saveCommand;
		}
		public AuthorizationView(
			DeleteAllCommand deleteCommand, 
			LoginCommand loginCommand, 
			LogoutCommand logoutCommand)
		{
			InitializeComponent();

			DataContext = this;

			DeleteAllCommand = deleteCommand;
			LogInCommand = loginCommand;
			LogoutCommand = logoutCommand;
		}