Persist information using ViewBag?

Since you are going to make a redirect, you have to use TempData itself. ViewBag does not survive in this scenario.

TempData["Login"] = retorno.login;
TempData["senha"] = retorno.senha;
TempData["nome"] = retorno.nomeusuario;
TempData["id"] = retorno.idusuario;

Reference .

If you want to keep the information throughout the session use Session :

Session["Login"] = retorno.login;
Session["senha"] = retorno.senha;
Session["nome"] = retorno.nomeusuario;
Session["id"] = retorno.idusuario;

Controller C #:

ViewBag.Nome = "Jr";

Html:

@ViewBag.Nome

I was researching about ViewBags and I ended up finding this question, but my question was:

Using Viewbags or ViewModels?

@bigown's answer solves your problem with the basic concept of the difference between Viewbag, Viewdata, and Tempdata.

However, I answer your question differently:

  

Persist information using ViewBag?

No! Or at least, not that way from your example.

In this case, it is best to use ViewModels. Take a look at the two replies to this post ViewModels or ViewBags .

In this way you would create an encapsulated class of your Login and in your View you would receive a template and use the strongly typed data.

It would look something like this:

LoginViewModel.cs

public class LoginViewModel
{
    [Display(Name = "Login")]
    [Required(ErrorMessage = "O campo 'login' é obrigatório.")]
    public string login { get; set; }

    [Display(Name = "Senha")]
    [Required(ErrorMessage = "O campo 'senha' é obrigatório.")]
    public string senha { get; set; }
}

LoginController

    public ActionResult Login()
    {
        LoginViewModel login = new LoginViewModel();

        return View(login);
    }

    [HttpPost]
    public ActionResult Login([Bind(Include = "login,senha")] LoginViewModel login)
    {
        LoginViewModel login = new LoginViewModel();

        if (ModelState.IsValid)
        {
            db.TbLogin.Add(login);
            db.SaveChanges();                
        }
        return RedirectToAction("Index");
    }

* Remember: Never do

return View();

in a Post method or you will run a great risk of form resubmission.

Login.cshtml

 @model LoginViewModel

    @{
        ViewBag.Title = "Entrar";
        Layout = null;
    }

    <dl class="dl-horizontal">
        <dt>
            @Html.DisplayNameFor(model => model.login)
        </dt>

        <dd>
            @Html.TextBoxFor(model => model.login)
        </dd>
        <dt>
            @Html.DisplayNameFor(model => model.senha)
        </dt>

        <dd>
            @Html.TextBoxFor(model => model.senha)
        </dd>    
    </dl>

I hope I have helped.