Introductions
ViewBag, ViewData, and TempData all are objects in ASP.NET MVC and these are used to pass the data in various scenarios.
|
ViewData
|
ViewBag
|
TempData
|
| It is Key-Value Dictionary collection | It is a type object | It is Key-Value Dictionary collection |
| ViewData is a dictionary object and it is property of ControllerBase class | ViewBag is Dynamic property of ControllerBase class. | TempData is a dictionary object and it is property of controllerBase class. |
| ViewData is Faster than ViewBag | ViewBag is slower than ViewData | NA |
| ViewData is introduced in MVC 1.0 and available in MVC 1.0 and above | ViewBag is introduced in MVC 3.0 and available in MVC 3.0 and above | TempData is also introduced in MVC1.0 and available in MVC 1.0 and above. |
| ViewData also works with .net framework 3.5 and above | ViewBag only works with .net framework 4.0 and above | TempData also works with .net framework 3.5 and above |
| Type Conversion code is required while enumerating | In depth, ViewBag is used dynamic, so there is no need to type conversion while enumerating. | Type Conversion code is required while enumerating |
| Its value becomes null if redirection has occurred. | Same as ViewData | TempData is used to pass data between two consecutive requests. |
| It lies only during the current request. | Same as ViewData | TempData only works during the current and subsequent request |
ViewBag
1.ViewBag is a dynamic object to pass the data from Controller to View
2.it is restricted to the current request and the value of ViewData will become null while redirecting
3.ViewBag is slower than ViewData
eg.
Public ActionResult Index()
{
ViewBag.Title = “Welcome”;
return View();
}
ViewData
1.ViewData is a dictionary object to pass the data from Controller to View where data is passed in the form of key-value pair.
2. The scope of ViewData is similar to ViewBag and it is restricted to the current request and the value of ViewData will become null while redirecting
3.ViewData is Faster than ViewBag
eg.
Public ActionResult Index()
{
ViewData[”Title”] = “Welcome”;
return View();
}
TempData
1.TempData is a dictionary object to pass the data from one action to other action in the same Controller or different Controllers.
2.TempData will not null while redirecting.
eg.
Public ActionResult Index()
{
TempData[”Data”] = “I am from Index action”;
return View();
}
Public string Get()
{
return TempData[”Data”] ;
}
