private void LoginMenu()
        {
            Console.Clear();
            Console.WriteLine("Enter username: "******"Enter password: "******"Welcome {_vm.CurrentUser.FirstName} {_vm.CurrentUser.LastName}");
                // Console.ReadKey();
                //VendingMenu();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.ReadKey();
            }
        }