根据Microsoft官方，这是ASP.NET MVC 2中的错误.我得到了下面的链接，尽管情况并不完全相同，但这似乎是相同的问题.据我所知，它与继承的属性和DataAnnotations模型元数据提供程序有关.该链接表示，他们将尝试在ASP.NET MVC 3中解决此问题.

According to a Microsoft official this is a bug in ASP.NET MVC 2. I was given the link below and although the scenario isn't exactly the same, it seems to be the same problem. As far as I can tell it is related to inhertited properties and DataAnnotations model metadata provider. The link says they will try to fix the issue in ASP.NET MVC 3.

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