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ASP.NET MVC Class level custom data-annotation and ModelState keys

I have custom class level validation attribute, inheriting from ValidationAttribute, on my model.

H开发者_Go百科ow come it doesn't register a key in the ModelState when its IsValid is false? I can see the the error message in the ModelState.Values collection, but the ModelState.Keys collection only shows an empty string "". Can I provide a key for it - presumably this is because its not assigned to a property?

I wanna be able to use ModelState.Remove in my controller to remove this error upon a certain condition, but I have no Key!

Any ideas?


How about checking ModelError.Exception in IModelBinder.OnModelUpdated.

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