用户控制数据绑定的最佳实践 - 如何实现这一点？
我有一个带有文本框、标签等的用户控件。现在我想获得相同的数据绑定功能，就像我将控件直接放置在表单上一样。我尝试在用户控件中使用额外的绑定源和错误提供程序，并尝试将控件的属性作为属性提供。
什么都没起作用。所以必须有一个解决方案来完成这个任务。那么如何呢？
I've got an User Control with TextBoxes, Labels, ... . Now I would like to get the same Data Binding Features like I would place the Controls directly on the Form. I tried with an extra Binding Source and Error Provider in the User Control and I tried to make the Properties of my Controls available as an property.
Nothing worked. So there have to be an solution to get this done. So how?
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我在 https://github.com/edymtt/usercontrolwithdatabinding 实现了一个示例来说明一些数据绑定可能适用于您的问题的场景。我特别讨论了两种场景：
UserControl来编辑复杂类型的属性（例如AddressPOCO）；实现用于编辑基本属性的
UserControl在这种情况下，公开底层控件的相关属性就足够了（例如
TextBox< 的Text属性） /code>）并在发生变化时引发适当的事件（继续该示例，处理TextBox的TextChanged事件并引发新的TextChanged> 事件，请参阅 MSDN 上的此页面的“更改通知”部分表单中的
ErrorProvider（您拥有绑定源）可以毫无问题地处理此类 UserControl实现用于编辑复杂属性的
UserControl 这种情况并不比前一种复杂：
BindingSource和一个Error Provider来处理您需要的 POCO，我希望该示例足够清晰，能够理解绑定的工作原理。
I've realized a sample at https://github.com/edymtt/usercontrolwithdatabinding to illustrate some data binding scenarios that may apply to your question. In particular I've addressed two scenarios:
UserControlto edit a basic property (string, integer, ...);UserControlto edit a property of a complex type (such as anAddressPOCO);Realization of an
UserControlto edit a basic propertyIn this case it suffices to expose the relevant property of an underlying control (for example the
Textproperty of aTextBox) and to raise an appropriate event when this changes (continuing the example, handle theTextChangedevent of theTextBoxand raise a newTextChangedevent, see this page on MSDN at the section "Change Notification for Custom Controls).The
ErrorProviderin the form (where you have the binding source) can handle this kind of UserControl without problemRealization of an
UserControlto edit a property of a complex typeThis case is not much complex than the previous:
BindingSourceand anError Providerin the usercontrol to handle the POCO you need;I hope that the sample is clear enough to understand how the binding works.