public MainWindowViewModel(IViewModelFactory factory)
{
addOrderCommand = new DelegateCommand(() => Current = factory.CreateAddOrderViewModel());
reportCommand = new DelegateCommand(() => Current = factory.CreateReportViewModel());
assignMechanicCommand = new DelegateCommand(() => Current = factory.CreateAssignMechanicViewModel());
completeOrderCommand = new DelegateCommand(() => Current = factory.CreateCompleteOrderViewModel());
}
