UserManager.AddToRole默认为facebook登录失败

Question

我正在使用asp.net身份2＆amp;天蓝网站上的MVC 5。我创建了一些角色，并且没有问题将用户（作为本地帐户注册到站点）分配给新创建的角色。

奇怪的部分只有在我使用社交登录创建帐户时（在这种情况下为Facebook）。

我检查了表格[aspnetusers]＆amp; [aspnetuserlogins]，一切看起来都不错......

直到我尝试为角色分配社交帐户。没有例外，在我的记录器中一切都很好。我做错了什么？

var um = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));
var user = um.FindByEmail(email);
um.AddToRole(user.Id, "admin");

只是有点唠叨：角色存在，我毫不费力地将其分配给本地帐户

Answer 1

在搜索了stackoverflow之后，我终于偶然发现了这条评论AddToRole() method doesn't result in db entry in ASP.NET Identity

之后，我改变了行

um.AddToRole(user.Id, "admin");

到

var result = um.AddToRole(user.Id, "admin");
//log result.Errors 

来自.AddToRole()

的错误消息

用户名Lee Gary无效，只能包含字母或数字。

在查看本地创建的帐户后，我意识到所有这些帐户的电子邮件都是用户ID

AccountController - 注册

    //
    // POST: /Account/Register
    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> Register(RegisterViewModel model)
    {
        if (ModelState.IsValid)
        {
            var user = new ApplicationUser() 
            { 
                // this line assigned email as username
                UserName = model.Email, 
                Email = model.Email
            };
            IdentityResult result = await UserManager.CreateAsync(user, model.Password);
            if (result.Succeeded)
            {
                await SignInAsync(user, isPersistent: false);
                return RedirectToAction("Index", "Home");
            }
            else
            {
                AddErrors(result);
            }
        }

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

但是，上帝知道原因，MVC开发人员决定让社交登录用户输入他们自己的用户名而无需验证

AccountController - ExternalLoginConfirmation

    //
    // POST: /Account/ExternalLoginConfirmation
    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl)
    {
        if (User.Identity.IsAuthenticated)
        {
            return RedirectToAction("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.Name, //<--- model.Name = user input    
                Email = model.Email , 
                BirthDate = model.BirthDate
            };
            IdentityResult result = await UserManager.CreateAsync(user);
            if (result.Succeeded)
            {
                result = await UserManager.AddLoginAsync(user.Id, info.Login);
                if (result.Succeeded)
                {
                    await SignInAsync(user, isPersistent: false);                        
                    return RedirectToLocal(returnUrl);
                }
            }
            AddErrors(result);
        }

        ViewBag.ReturnUrl = returnUrl;
        return View(model);
    }

最后为了确保用户名是A-OK，我在Register()

进行了一些小改动

自：

var user = new ApplicationUser() 
{ 
    UserName = model.Name,    
    Email = model.Email ,
    BirthDate = model.BirthDate
};

要：

var user = new ApplicationUser() 
{ 
    Name = model.Name,
    UserName = model.Email, 
    Email = model.Email ,
    BirthDate = model.BirthDate
};