Difference Between ViewBag & ViewData in MVC

ViewBag and ViewData are mechanisms in ASP.NET MVC for passing data from controllers to views. ViewBag is a dynamic property that allows setting and accessing data, while ViewData is a dictionary-like container.

ViewBag vs ViewData 

1. ViewData is a dictionary of objects that is derived from the ViewDataDictionary class and accessible using strings as keys.
2. ViewBag is a dynamic property that takes advantage of the new dynamic features in C# 4.0.
3. ViewData requires typecasting for complex data types and checks for null values to avoid errors.
4. ViewBag doesn't require typecasting for complex data types.
5. Calling of ViewBag is

   ViewBag.Name = "Yogesh";
   

6. Calling of ViewData is

   ViewData["Name"] = "yogesh";