Difference between ViewBag & ViewData

Question

Different between viewbag & viewdata.

Munesh Sharma · Answer

ViewData ViewData is a dictionary object that is derived from ViewDataDictionary class. public ViewDataDictionary ViewData { get ; set ; } ViewData is a property of ControllerBase class. ViewData is used to pass data from controller to corresponding view. It’s life lies only during the current request. If redirection occurs then it’s value becomes null. It’s required typecasting for getting data and check for null values to avoid error. ViewBag ViewBag is a dynamic property that takes advantage of the new dynamic features in C# 4.0. Basically it is a wrapper around the ViewData and also used to pass data from controller to corresponding view. public Object ViewBag { get ; } ViewBag is a property of ControllerBase class. It’s life also lies only during the current request. If redirection occurs then it’s value becomes null. It doesn’t required typecasting for getting data.

Ravi Patel · Answer

Hi  here is the diffrence between ViewData and ViewBag ViewData ViewBag It is Key-Value Dictionary collection It is a type object ViewData is a dictionary object and it is property of ControllerBase class ViewBag is Dynamic property of ControllerBase class. ViewData is Faster than ViewBag ViewBag is slower than ViewData 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 ViewData is also work with .net framework 3.5 and above ViewBag is only work with .net framework 4.0 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. It value become null if redirection is occurred. Same as ViewData It lies only during the current request. Same as ViewData

Vivek Kumar · Answer

Hi Ashish For more detail please go through the below link. http://www.dotnet-tricks.com/Tutorial/mvc/9KHW190712-ViewData-vs-ViewBag-vs-TempData-vs-Session.html

Ashish Srivastava · Answer

ViewData is a dictionary of objects that is derived from ViewDataDictionary class and accessible using strings as keys. ViewBag is a dynamic property that takes advantage of the new dynamic features in C# 4.0