Câu 71: 70-486: MCSD Developing ASP.NET MVC 4 Web Applications

You are developing an ASP. NET MVC application. The application has a contact view includes a form for editing the displayed contact. You need to save the Contact object model when the form is posted back to the EditContact method using a POST method request. Which code segment should you use? Each correct answer presents a complete solution. Choose all that apply.

1. A. public ActionResult EditContact(){var c = newContact(){FirstName = Request.QueryString['"FirstName"'],LastName = Request.QueryString ["LastName"]},SaveContact(c);return View(c);} — đáp án hiện tại
2. B. public ActionResult EditContact(Contact c){SaveContact(c);return View(c);} — đáp án hiện tại
3. C. public ActionResult EditContact(FormCollection values){var c = newContact(){FirstName = values['"FirstName"'],LastName = values ["LastName"]},SaveContact(c);return View(c);}
4. D. public ActionResult EditContact(QueryStringProvider values){var c = newContact(){FirstName = values.GetValue['"FirstName"'],LastName = values.GetValue