Define ViewData in MVC.

Question

Mike Jason · Answer

Like science fiction, diverse worlds of the future?.. like gloomy cyberpunk, neo-modern utopia, then take a look at this blog -
SCI-fi arts. There you will find many new beautiful science fiction artworks from the most famous authors.

Nishi Tiwari · Answer

ViewData 
ViewData is defined as a dictionary of objects and derived from ViewDataDictionary class. We can access data value by using string as a key. It is the
type-safe and requires typecasting for the data type. It also avoids error and check for null reference at run time. It is mainly accessible only during current request. 
Example 
We are creating the controller and returning a view to the browser. This controller passes ViewData to the view.
Controller 
1.	using System;  
2.	using System.Collections.Generic;  
3.	using System.Web.Mvc;  
4.	namespace ViewBagExample.Controllers  
5.	{  
6.	    public class ViewBagController : Controller  
7.	    {  
8.	        // GET: ViewBag  
9.	        public ActionResult Index()  
10.	        {  
11.	            Listandlt;stringandgt; Courses = new Listandlt;stringandgt;();  
12.	            Courses.Add(andquot;J2SEandquot;);  
13.	            Courses.Add(andquot;J2EEandquot;);  
14.	            Courses.Add(andquot;Springandquot;);  
15.	            Courses.Add(andquot;Hibernatesandquot;);  
16.	            ViewData[andquot;Coursesandquot;] = Courses;  
17.	            return View();  
18.	        }  
19.	    }  
20.	}  
View 
// Index.cshtml
1.	andlt;!DOCTYPE htmlandgt;  
2.	andlt;htmlandgt;  
3.	andlt;headandgt;  
4.	    andlt;meta name=andquot;viewportandquot; content=andquot;width=device-widthandquot; /andgt;  
5.	    andlt;titleandgt;Indexandlt;/titleandgt;  
6.	andlt;/headandgt;  
7.	andlt;bodyandgt;  
8.	    andlt;h2andgt;List of Coursesandlt;/h2andgt;  
9.	    andlt;ulandgt;  
10.	        @{  
11.	            foreach (var Courses in ViewData[andquot;Coursesandquot;] as Listandlt;stringandgt;)  
12.	            {  
13.	                andlt;liandgt; @Coursesandlt;/liandgt;  
14.	            }  
15.	        }  
16.	    andlt;/ulandgt;  
17.	andlt;/bodyandgt;  
18.	andlt;/htmlandgt;  
Output: 
It produces the following output to the browser.

forum

Define ViewData in MVC.

Anonymous User

Can you answer this question?

2 Answers

Liked By