我正在尝试弯曲 DataForm 以支持多对多和绑定子对象列表。我已经能够控制对象的显示并可以访问 on change 事件。
例如:
OfferEditorForm.AutoGeneratingField += new EventHandler<DataFormAutoGeneratingFieldEventArgs>(OfferEditorFormGeneratingField);
这是我的小覆盖:
if (e.PropertyName == "Client")
{
var stack = new StackPanel();
var dataField = new DataField { Content = stack, Label = "Client:" };
var binding = new Binding("CustomerClients") { Source = _viewModel };
var combo = new ComboBox
{
DisplayMemberPath = "Name",
Name = "OfferEditForm_Client",
SelectedItem = _viewModel.CustomerLoyaltyProgramOffer.Client
};
combo.SetBinding(ComboBox.ItemsSourceProperty, binding);
combo.SelectionChanged += new SelectionChangedEventHandler(CustomerClients_SelectionChanged);
stack.Children.Add(combo);
dataField.Content.UpdateLayout();
e.Field = dataField;
}
我正在获取 SelectedChanged 事件,并在我的视图模型中更新项目,该项目被设置为表单的当前项目,如下所示:
void CustomerClients_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
FrameworkElement frameworkElement = sender as FrameworkElement;
ComboBox comboBox = (ComboBox)frameworkElement.FindName("OfferEditForm_Client");
if (comboBox != null)
{
_viewModel.CustomerLoyaltyProgramOffer.Client = (CustomerClient)comboBox.SelectedItem;
_viewModel.CustomerLoyaltyProgramOffer.CouponImage = "OMG!";
}
}
当我提交更改时,在此示例中,CouponImage 被发送到我的域服务中的 Update 方法,但 Client 仍然为 NULL。
CustomerLoyaltyProgramOffer 似乎没有引发通知属性更改。
这是一个子对象问题吗?我对这一切都错了吗?必须创建一个完整的编辑模板吗?