MVC 3 client-side validation without annotation?

Is there a way to have the same kind of client-side validation in MVC 3 without being able to set the validation at the viewmodel level? I have two requirements that are preventing me from adding my validation at the viewmodel level. I'd like to be able to have the same kind of "built-in" validation but without changing the viewmodel or controller code. I'd like to be able to change, turn on/off, validation at the view level post-deployment. Ideally I'd like to be able to edit the view mark-up without writing and maintaini开发者_如何转开发ng mountains of my own JavaScript.

---

http://bassistance.de/jquery-plugins/jquery-plugin-validation/

This may help ya, only validation on the client though so not really ideal.

---

You could create your own TypeDescriptionProvider which will allow to augment your viewmodel at runtime.

Based on this code sample (XmlMetadataTypeDescriptor, XmlMetadataTypeDescriptionProvider) you should be able to:

1. Augment viewmodel using external xml which contains validation attributes.

2. Turn on validation with

   TypeDescriptor.AddProvider

3. and turn it off with:

   TypeDescriptor.RemoveProvider

Update

For more information you can read great article: "Understanding the TypeDescriptor: A Metadata Engine for Designtime Code".