AdministratorHow do you define ViewData?
ViewData is a dictionary of objects that are stored and retrieved using strings as keys. It is used to transfer data from Controller to View. Since ViewData is a dictionary, it contains key-value pairs where each key must be a string. ViewData only transfers data from controller to view, not vice-versa.
When should we use ViewData?
All three objects are available as properties of both the view and controller. As a rule of thumb, you’ll use the ViewData, ViewBag, and TempData objects for the purposes of transporting small amounts of data from and to specific locations (e.g., controller to view or between views).
Is ViewData faster than ViewData in MVC?
ViewBag, ViewData, and TempData all are objects in ASP.NET MVC and these are used to pass the data in various scenarios….Introductions.
| ViewData | ViewBag | TempData |
|---|---|---|
| ViewData is Faster than ViewBag | ViewBag is slower than ViewData | NA |
What is difference ViewBag and ViewData?
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. ViewData requires typecasting for complex data type and check for null values to avoid error.
Which one is better ViewBag or ViewData?
We have three options: ViewData, ViewBag, and TeampData for passing data from controller to view and in the next request….ViewData VS ViewBag VS TempData.
| ViewData | ViewBag | TempData |
|---|---|---|
| ViewData is Faster than ViewBag | ViewBag is slower than ViewData | NA |
What is ViewData in HTML?
ViewData is a container for data to be passed from the PageModel to the content page. ViewData is a dictionary of objects with a string-based key. You add items to ViewData as follows: public class IndexModel : PageModel. {
What is ViewData in travel and tourism?
Viewdata is a Videotex implementation. It is a type of information retrieval service in which a subscriber can access a remote database via a common carrier channel, request data and receive requested data on a video display over a separate channel.
What is better ViewData or ViewBag?
ViewData is a dictionary object and it is property of ControllerBase class. ViewData is faster than ViewBag .
What is the use of ViewData in MVC?
In MVC, when we want to transfer the data from the controller to view, we use ViewData. It is a dictionary type that stores the data internally. ViewData contains key-value pairs which means each key must be a string in a dictionary. The only limitation of ViewData is, it can transfer data from controller to view.
What is difference between ViewData ViewBag and TempData?
ViewData being a dictionary object is accessible using strings as keys and also requires typecasting for complex types. On the other hand, ViewBag doesn’t have typecasting and null checks. TempData is also a dictionary object that stays for the time of an HTTP Request.
What is the Viewdata attribute of the pagemodel?
The ViewData attribute was introduced in ASP.NET Core 2.1. PageModel properties decorated with this attribute are automatically added as keys to the ViewData dictionary along with any value that has been assigned to them. In the following example, the Message property has been automatically added to ViewData:
What is Viewdata in MVC framework?
So we can say that the ViewData in ASP.NET MVC Framework is a dictionary object. As it is a dictionary object, so it is going to store the data in the form of key-value pairs where each key must be a string and the value that we are passing to the dictionary is going to be stored in the form of an object type.
What is the use of the Dictionary Viewdata?
ViewData is a dictionary which can contain key-value pairs where each key must be string. The following figure illustrates the ViewData.
What is Viewdata in Razor pages?
Working With ViewData in Razor Pages ViewData is a container for data to be passed from the PageModel to the content page. ViewData is a dictionary of objects with a string-based key. You add items to ViewData as follows: