How can we pass value from controller to view and vise versa

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I'm trying to create simple login page, which will validate user.

In my view

<script type="text/javascript">
    $(document).ready(function () {
        $('#btnLogin').click(function () {
            document.location = '@Url.Action("Validateuser", "Login")';
        });
        $('body').css("background", "#517EAD");
        $('body').css("color", "Green");
        $('body').css("margin", "0");
    });
</script>
<div style="background:white;text-align:right;padding:0px 50px;">
      <h2>Please Login</h2>
</div>

<div style="float:right;">
    <table border="0">
<tr>
    <td>
        <label id="lbllogin">LoginID:</label>        
    </td>
    <td>
            <input type="text" id="txtLogin" required placeholder="Prashant" style="border-radius:5px;background:orange;"/>
    </td>
</tr>
<tr>
    <td></td>
    <td>
        <input type="submit" id="btnLogin" value="Login" style="border-radius:15px;background:silver;"/>
    </td>
</tr>
</table>
</div>

How i can pass textbox value to the controller??

I have on controller with 2 actions as follows

namespace MVC.Controllers
{
    public class LoginController : Controller
    {
        //
        // GET: /Login/

        public ActionResult Index() // has Index.cshtml view
        {
            return View();
        }
        
        public ActionResult Validateuser() // has Validateuser.cshtml view
        {
            Login objLogin = new Login();
            int intUser = objLogin.validateUser();
            //ViewData["Msg"] = "Invalid User";
            return RedirectToAction("Index","Login");
        }
    }
}

In above code if you check, in Validateuser() i have not written any logic but i'm trying to redirect to Index.cshtml view and want to pass "Invalid User" massage to the view where i will display.

can i know how can i do this??

thanks in advance

Posted 27-Feb-13 23:20pm

dhage.prashant01

Updated 28-Feb-13 2:49am

v2

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S. M. Ahasan Habib · Answer 1 · 2013-02-27T23:46:00

You can use Model,ViewData,ViewBag,TempData for send data to view. I prefer ViewData for your requirement as its type is dynamic. In your code you used ViewBag and though is not working, you commented out ViewBag.
Actually it will work when you use View(YourViewName) method for return ActionResult. If you use RedirectToAction method then it actually use 2 separate request so ViewData/ViewBag value will be lost. If you still need to use ReDirectToAction then you should send data to view with the help of TempData object.

C#

public ActionResult Contact()
{
    ViewBag.Message = "Your contact page.";
    //ViewBag.Hello = "GoodMorning";
    TempData["Hello"] = "Good Morning???";
    return RedirectToAction("About");
}

HTML

<div>@TempData["Hello"]</div>

I prefer you use

C#

public ActionResult Validateuser() // has Validateuser.cshtml view
       {
           Login objLogin = new Login();
           int intUser = objLogin.validateUser();
           ViewBag.Msg = "Invalid User";
           //return RedirectToAction("Index","Login");
           return View("About");
       }

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