Getting the error here:
ValueProviderResult value = bindingContext.ValueProvider.GetValue(\"ConfirmationMessage\");
How do I allow on a sel
Expanding upon the answer from @D-W, in my Edit controller, in iterating over form values, I had to replace all instances of Request.Params.AllKeys with Request.Unvalidated.Form.AllKeys and all instances of Request[key] with Request.Unvalidated.Form[key].
This was the only solution that worked for me.