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What is the use of ViewData in Asp.Net MVC?

Shikhar Arora 1846 18-Dec-2019

How to send data from Controller to View

asp.net mvc .net  mvc 
Updated on 18-Dec-2019
Shikhar Arora

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I'm a programmer and I like creativity.

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Shikhar Arora

Shikhar Arora

18-Dec-2019

ViewData is used to pass data from controller to view and it consist of a null value when redirection occurs. ViewData is derived from ViewDataDictionary which is dictionary type and ViewData required typecasting. Following is the code scrap of ViewData in MVC

// Summary:

// Gets or sets the dictionary for view data.

//

// Returns:

// The dictionary for the view data.

public ViewDataDictionary ViewData { get; set; }

ViewData is a dictionary object that is derived from the ViewDataDictionary class. We will see how we can assign value to ViewData in Controller with a simple example for that create one new controller in the application and write code like as shown below

 using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;
namespace Tutorial4.Controllers

{

    public class TestController : Controller

    {

        public ActionResult Index()
        {

            ViewData["test"] = "hi Viewdata";

            return View();

        }

    }

}

Now we will create one view to show data for that right click on controller à select add view give the name for that view (Index.cshtml). Open view file and write the following code to show data in the website

@{

ViewBag.Title = "Index";

}

<h2>Index</h2>

@ViewData["test"]
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