MVC 5 ASP.NET Identity 2: Capture user's preference for “remember me” in ExternalLogin

Question

I am using the Identity 2.0 Sample.

I get that by setting isPersistent to true in ExternalLoginCallback action method, the browser will automatically log the user in

Answer 1

Don't delete any code, just change as follows:

In AccountViewModels, edit to match:

public class ExternalLoginViewModel 
    {
        public string Action { get; set; }
        public string ReturnUrl { get; set; }
        public string RemembermeExtnl { get; set; }
    }

In Account Controller, edit to match:

public ActionResult Login(string returnUrl)
    {   
        ViewBag.ReturnUrl = returnUrl;
        ViewBag.RemembermeExtnl = "f";
        return View();          
    }

public ActionResult ExternalLogin(string provider, string returnUrl, string remembermeExtnl) 
    {
        // Request a redirect to the external login provider
        return new ChallengeResult(provider, Url.Action("ExternalLoginCallback", "Account", new { ReturnUrl = returnUrl, remembermeExtnl = remembermeExtnl }));
    }


public async Task ExternalLoginCallback(string returnUrl, string remembermeExtnl)
    {
    ...
        var result = await SignInHelper.ExternalSignIn(loginInfo, isPersistent: remembermeExtnl=="t"); 
    ...
    }

In Login view, edit to match:

    @Html.Partial("_ExternalLoginsListPartial", new PG.Models.ExternalLoginViewModel() { Action = "ExternalLogin", ReturnUrl = ViewBag.ReturnUrl, RemembermeExtnl = ViewBag.RemembermeExtnl })                
       Remember me  

In Login view, add this:

In _ExternalLoginListPartial:

string action = Model.Action;
string returnUrl = Model.ReturnUrl;
string remembermeExtnl = Model.RemembermeExtnl;
using (Html.BeginForm(action, "Account", new { ReturnUrl = returnUrl, RemembermeExtnl = remembermeExtnl }))