Whats Difference in performance of ViewBag and View Data and when to use which one

Question

I am new to MVC. I want to know that when I should use ViewData, ViewBag and TempData to pass objects and is there any difference in performance of ViewData and ViewBag?

Answer 1

View Data: View Data is a dictionary object that is derived from View Data Dictionary class. View Data is a property of Controller Base class. View Data is used to pass data from controller to corresponding view. Usage:

public ActionResult Index()

{

    ViewData.Name = "Tony Boss";
    return View();

}

View Bag View Bag is a dynamic property that takes advantage of the new dynamic features in C# 4.0. Basically it is a wrapper around the View Data and also used to pass data from controller to corresponding view. View Bag is a property of Controller Base class.

Usage:

public ActionResult Index()

{

    ViewBag.Name = "Tony Boss";
    return View();

}

Temp Data: Temp Data is a dictionary object that is derived from Temp Data Dictionary class and stored in short lives session Temp Data is a property of Controller Base class. Temp Data is used to pass data from current request to subsequent request (means redirecting from one page to another).