public void Save()
        {
            if (_backuptUnit == null)
            {
                CurrentUnit.UserCreated = "Admin";
                CurrentUnit.CreatedTime = DateTime.Now.ToString("dd/MM/yyyy HH:mm:ss");
                UnitServices.Insert(CurrentUnit);
            }
            else
            {
                CurrentUnit.UserModified = "Admin";
                CurrentUnit.ModifiedTime = DateTime.Now.ToString("dd/MM/yyyy HH:mm:ss");
                UnitServices.Update(CurrentUnit);
            }

            (App.Current.MainWindow.DataContext as MainViewModel).UnitViewModel.SearchUnit();
            (App.Current.MainWindow.DataContext as MainViewModel).CloseDialog();
        }