How can I see the validation results while in a controller's action?

Question

I have an update action in a controller that performs an UpdateModel. Before I pass the data back to the view I want to log the properties that failed to validate.

I expected the dictionary where the errors are stored to be in the ModelState (since the method AddModelError() is there) but this doesn't seem to be the case. How can I access this dictionary while still in the controller?

Answer 1

On Controller:

 foreach (ModelState state in ViewData.ModelState.Values)
        foreach (ModelError error in state.Errors)
          MyLog(error.ErrorMessage);