我的实体对象使用DataAnnotations属性进行验证，但为了验证所有Silverlight控件，不仅是DataGrid，我还实现了INotifyDataErrorInfo。但这会在DataGrid中产生重复的验证错误文本（它显示来自DataAnnotations和INotifyDataErrorInfo的错误）。我该怎么解决这个问题？
我的ModelBase类：http://pastebin.com/SewggVUc
我弄清楚了，我误解了当提供null或空属性时，INotidyDataErrorInfo.GetErrors（字符串属性）应该返回什么，我认为它应该返回所有属性错误，但不应该返回类顶级错误，我在提供属性和null参数的情况下引发ErrorsChanged事件，所以它显示了重复的消息，一个用于属性，一个是班级级别的，在我的情况下，它们是一样的。
这是可以帮助您的博客文章链接。
作者在文章末尾描述了如何将INotifyDataErrorInfo和DataAnnotations结合起来。
如果没有任何更改，请将Entity类的代码添加到您的问题中。
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