How to get custom information from UserProfile?

问题

I add in my UserProfile the custom field UserType as string. I want to change my login post method to get the value from UserType and pass this value in a TempData.

This is my code on AccountController:

    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
        public ActionResult Login(LoginModel model, string returnUrl)
    {
        if (ModelState.IsValid && WebSecurity.Login(model.UserName, model.Password, persistCookie: model.RememberMe))
        {
            var context = new UsersContext();
            var currentUser = Membership.GetUser(User.Identity.Name);
            string username = currentUser.UserName;
            var user = context.UserProfiles.SingleOrDefault(u => u.UserName == username);
            var userType = user.UserType;

            TempData["UserType"] = user.UserName; //Taking UserType from User Profile to validate in _Layout
            return RedirectToLocal(returnUrl);
        }

        // If we got this far, something failed, redisplay form
        ModelState.AddModelError("", "The user name or password provided is incorrect.");
        return View(model); 
    }

I do a debug on this method, this is the informations that i have:

> **On WebSecurity.Login()** I can see the UserName and Password.
> **Var CurrentUser**  I can't get the value from User.Identity.Name
> **string Username** This error is displayed *Object reference not set to an instance of an object*. Application crash.

Anybody have some solution for this? I'm new on ASP.NET, but maybe if I implements custom membership it will work, what do you think? Could you send me some example? Thank you guys.

Solution here:

`[HttpPost] [AllowAnonymous] [ValidateAntiForgeryToken] public ActionResult Login(LoginModel model, string returnUrl) { if (ModelState.IsValid && WebSecurity.Login(model.UserName, model.Password, persistCookie: model.RememberMe)) { var context = new UsersContext(); var user = context.UserProfiles.Where(u => u.UserName == model.UserName); var userType = user.Select(m => m.UserType);

        TempData["UserType"] = user.UserName; //Taking UserType from User Profile to validate in _Layout
        return RedirectToLocal(returnUrl);
    }

    // If we got this far, something failed, redisplay form
    ModelState.AddModelError("", "The user name or password provided is incorrect.");
    return View(model); 
}`

回答1:

Just an Idea for in case I cannot Comment bcoz of my reputation, why are you not directly using model.UserName instead of using var currentUser = Membership.GetUser(User.Identity.Name);

The Reason behind this is any one who logins will be the current user it self and you can retrieve its details form the database.

Updated

You Can Use

UserProfile User = udb.UserProfiles.Where(m => m.UserName == model.UserName).FirstOrDefault();
var userType=User.UserType; // this brings your UserType from database

// then you can use this as
TempData["UserType"]=userType;

Hopes this helps You !

来源：https://stackoverflow.com/questions/26328660/how-to-get-custom-information-from-userprofile