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

            if (ModelState.IsValid)
            {
                // Get the information about the user from the external login provider
                var info = await this.AuthenticationManager.GetExternalLoginInfoAsync();
                if (info == null)
                {
                    return this.View("ExternalLoginFailure");
                }

                var user = new ApplicationUser() { UserName = model.Email, Email = model.Email };
                IdentityResult result = await this.UserManager.CreateAsync(user);
                if (result.Succeeded)
                {
                    result = await this.UserManager.AddLoginAsync(user.Id, info.Login);
                    if (result.Succeeded)
                    {
                        await this.SignInAsync(user, isPersistent: 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);
                        //// SendEmail(user.Email, callbackUrl, "Confirm your account", "Please confirm your account by clicking this link");

                        return this.RedirectToLocal(returnUrl);
                    }
                }

                this.AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return this.View(model);
        }
 private async Task SignInAsync(ApplicationUser user, bool isPersistent)
 {
     this.AuthenticationManager.SignOut(DefaultAuthenticationTypes.ExternalCookie);
     this.AuthenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = isPersistent }, await user.GenerateUserIdentityAsync(this.UserManager));
 }
        public async Task<ActionResult> Register(RegisterViewModel model, bool captchaValid)
        {
            if (this.userManager.FindByEmail(model.Email) != null)
            {
                this.ModelState.AddModelError("Email", "Email is already registered");
            }

            if (this.userManager.FindByEmail(model.UserName) != null)
            {
                this.ModelState.AddModelError("UserName", "User name is already registered");
            }

            if (!captchaValid)
            {
                this.ModelState.AddModelError("Captcha", "Invalid captcha");
            }

            if (ModelState.IsValid)
            {
                var user = new ApplicationUser() { UserName = model.UserName, Email = model.Email };
                IdentityResult result = await this.UserManager.CreateAsync(user, model.Password);
                if (result.Succeeded)
                {
                    await this.SignInAsync(user, isPersistent: 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 this.RedirectToAction("Index", "Home");
                }
                else
                {
                    this.AddErrors(result);
                }
            }

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