public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl)
        {
            if (User.Identity.IsAuthenticated)
            {
                return RedirectToAction("Index", "Manage");
            }

            if (ModelState.IsValid)
            {
                // Get the information about the user from the external login provider
                var info = await AuthenticationManager.GetExternalLoginInfoAsync();
                if (info == null)
                {
                    return View("ExternalLoginFailure");
                }
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
                var result = await UserManager.CreateAsync(user);
                if (result.Succeeded)
                {
                    result = await UserManager.AddLoginAsync(user.Id, info.Login);
                    if (result.Succeeded)
                    {
                        await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
                        return RedirectToLocal(returnUrl);
                    }
                }
                AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }
 private async Task SignInAsync(ApplicationUser user, bool isPersistent)
 {
     AuthenticationManager.SignOut(DefaultAuthenticationTypes.ExternalCookie);
     AuthenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = isPersistent }, await user.GenerateUserIdentityAsync(UserManager));
 }
        public async Task<ActionResult> Register(RegisterViewModel model, HttpPostedFileBase upload)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email, Name = model.Name, Gender = model.Gender, DateofBirth = model.DateofBirth };
                var result = await UserManager.CreateAsync(user, model.Password);

                //File UPLOAD
                if (upload != null && upload.ContentLength > 0)
                {
                    var avatar = new File
                    {
                        FileName = System.IO.Path.GetFileName(upload.FileName),
                        FileType = FileType.Avatar,
                        ContentType = upload.ContentType
                    };
                    using (var reader = new System.IO.BinaryReader(upload.InputStream))
                    {
                        avatar.Content = reader.ReadBytes(upload.ContentLength);
                    }
                    user.Files = new List<File> { avatar };
                }
                
                if (result.Succeeded)
                {
                    var roleStore = new RoleStore<IdentityRole>(context);
                    var roleManager = new RoleManager<IdentityRole>(roleStore);
                    await roleManager.CreateAsync(new IdentityRole { Name = "Normal"});

                    var currentUser = UserManager.FindByName(user.UserName);
                    var roleresult = UserManager.AddToRole(currentUser.Id, "Normal");

                    await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);
                    
                    // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
                    // Send an email with this link
                    // string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                    // var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
                    // await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>");

                    return RedirectToAction("Index", "Home");
                }
                AddErrors(result);
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }