是否可以动态地向实体对象添加属性？
是否可以在运行时向实体框架生成的类添加属性？我成功地使用从 DynamicObject 继承的 POCO 类执行此操作，但是当我尝试对实体类执行相同的操作时，我收到错误“[类名] 的部分声明不得指定不同的基类”。
is it possible to add properties at run-time to a class that was generated by the entity framework? I am successful in doing so with POCO classes that inherit from DynamicObject but when I try to do the same thing with my entity classes, I receive the error "Partial declarations of [class name] must not specify different base classes".
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事实上，我很惊讶它能与 L2S 配合使用；毕竟，
DynamicObject是一头好奇的野兽。您可以尝试确保使用 EF 4 POCO 支持，而不是 3.5SP1 风格的公共基类方法，但说实话，我不确定这是正确的方法...数据库对象不应该真正拥有 动态特性，IMO。您的意图尚不清楚，但如果这是出于数据绑定目的，您可能需要通过
ICustomTypeDescriptor或TypeDescriptionProvider查看自定义对象模型。这是一种较旧的技术，似乎可以在运行时扩展对象（不需要动态）。I'm actually pretty surprised that works with L2S;
DynamicObjectis a curious beast, after all. You could try ensuring you are using the EF 4 POCO support, rather than the 3.5SP1-style common-base-class approach, but to be honest I'm not sure this is the way to go... database objects shouldn't really have dynamic properties, IMO.Your intent isn't clear, but if this is for data-binding purposes, you might want to look at custom object models, via
ICustomTypeDescriptororTypeDescriptionProvider. This is an older technology for seeming to extend objects at runtime (without needingdynamic).