How to redirect user to a specific page after login

Question

I am able to login by type of user: administrator or common. And I am using:

[Authorize(Roles = "Administrator")] and [Authorize(Roles = "Common")]

Inside the controllers I want to restrict by type of user who can access it. But I would like to redirect the user to a specific page after he logs in.

My code is like this:

Web.config

<authentication mode="Forms">
    <forms loginUrl="/Home/Login" timeout="15" />
</authentication>

Global asax.Cs

    protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
    {
        var authCookie = HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
        if (authCookie != null)
        {
            FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
            if (authTicket != null && !authTicket.Expired)
            {
                var roles = authTicket.UserData.Split(',');
                HttpContext.Current.User = new System.Security.Principal.GenericPrincipal(new FormsIdentity(authTicket), roles);
            }
        }
    }

Homecontroller.Cs

    public ActionResult Login()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Login(string email, string senha, string ReturnUrl)
    {
        Pessoas usuarios = db.Pessoas.Where(t => t.Email == email && t.Senha == senha).ToList().FirstOrDefault();
        if (usuarios != null)
        {
            string permissoes = "";
            permissoes += usuarios.TipoUsuario + ",";
            permissoes = permissoes.Substring(0, permissoes.Length - 1);
            FormsAuthentication.SetAuthCookie(usuarios.Nome, false);
            FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, usuarios.Email, DateTime.Now, DateTime.Now.AddMinutes(30), false, permissoes);
            string hash = FormsAuthentication.Encrypt(ticket);
            HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hash);
            if (ticket.IsPersistent)
            {
                cookie.Expires = ticket.Expiration;
            }
            Response.Cookies.Add(cookie);
            if (String.IsNullOrEmpty(ReturnUrl))
            {
                if (User.IsInRole("Administrador"))
                {
                    return RedirectToAction("DashboardAdm", "Home");
                }
                else
                {
                    return RedirectToAction("DashboardUsuario", "Home");
                }
            }
            else
            {
                var decodedUrl = Server.UrlDecode(ReturnUrl);
                if (Url.IsLocalUrl(decodedUrl))
                {
                    return Redirect(decodedUrl);
                }
                else
                {
                    return RedirectToAction("Index", "Home");
                }
            }
        }
        else
        {
            ModelState.AddModelError("", "E-mail ou Senha estão incorretos");
            return View();
        }
    }

Login.cshtml

@{
ViewBag.Title = "Login";    
}

@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="container conteudo">
    <form>
        <div class="row">
            <div class="form-group col-md-8 offset-md-2 col-lg-6 offset-lg-3">
                <label>Email</label>
                <input type="email" class="form-control" id="email" name="email" placeholder="Email" required="required">
            </div>
        </div>
        <div class="row">
            <div class="form-group col-md-8 offset-md-2 col-lg-6 offset-lg-3">
                <label>Senha</label>
                <input type="password" class="form-control" id="senha" value="" name="senha" placeholder="Senha" required="required">
            </div>
        </div>
        <div class="row">
            <div class="form-group col-md-8 offset-md-2 col-lg-6 offset-lg-3">
                <button type="submit" class="btn btn-primary btn-lg btn-block">Entrar</button>
            </div>
        </div>
        <div class="row">
            <div class="form-group col-sm-6 offset-sm-3">
                @Html.ValidationSummary(true, "", new { @class = "text-danger" })
            </div>
        </div>
    </form>
</div>
}

Answer 1

In the method Login in your controller, you have a parameter called ReturnUrl. By calling this method, you can pass the url you want to redirect the logged in user.

Note that, in this section, you use this parameter to redirect the user:

  var decodedUrl = Server.UrlDecode(ReturnUrl);
  if (Url.IsLocalUrl(decodedUrl))
  {
    return Redirect(decodedUrl);
  }