我需要的类/模型的实例（用于访问非静态成员的目的）在我的自定义属性。

I need an instance of class/model(for the purpose of accessing a non-static member) within my custom attribute.

public class LoginModel
{
     [AutoComplete(currentInstance)]  //pass instance of class or CompanyNames
     public string DepartmentName { get; set; }


     public string[] DepartmentNames { get {...} }
}

有没有办法做到这一点，而无需使用新（）或反思。

推荐答案

这是完全不可能的。属性被烤成装配在编译时的元数据，以便在谈论一个合格的类的一个属性的情况下没有任何意义，因为情况下，只有在运行时存在。

That's totally impossible. Attributes are baked into the metadata of the assembly at compile-time so talking about passing an instance of a class to an attribute doesn't make any sense because instances exist only at runtime.

在另一方面属性始终反射消耗，所以我想，在那一刻你检查的类此的元数据自定义属性，你可以使用该实例的presence。

On the other hand attributes are always consumed by reflection, so I guess that at the moment you are checking for the presence of this custom attribute on the class metadata you could use the the instance.