How would I go about having multiple textboxes on an MVC 3 form treated as one for the purposes of validation?
It's a simple phone number field with one textbox for area code, one for prefix and one for the last four digits.
There are really two validation requirements:
1) They're all required.
2) They must all contain integers.
Now this is simple when doing it for individual fields but how can I create the equivalent of an ASP.NET CustomValidator with MVC so that I can validate all three fields as a whole?