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Mike Jason
Mike Jason 29 Jan 2020
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Nishi Tiwari
Nishi Tiwari 28 Jan 2020
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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.	            List<string> Courses = new List<string>();  

12.	            Courses.Add("J2SE");  

13.	            Courses.Add("J2EE");  

14.	            Courses.Add("Spring");  

15.	            Courses.Add("Hibernates");  

16.	            ViewData["Courses"] = Courses;  

17.	            return View();  

18.	        }  

19.	    }  

20.	}

View 

// Index.cshtml

1.	<!DOCTYPE html>  

2.	<html>  

3.	<head>  

4.	    <meta name="viewport" content="width=device-width" />  

5.	    <title>Index</title>  

6.	</head>  

7.	<body>  

8.	    <h2>List of Courses</h2>  

9.	    <ul>  

10.	        @{  

11.	            foreach (var Courses in ViewData["Courses"] as List<string>)  

12.	            {  

13.	                <li> @Courses</li>  

14.	            }  

15.	        }  

16.	    </ul>  

17.	</body>  

18.	</html>

Output:

It produces the following output to the browser.

Nishi Tiwari

MindStick Training
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