ASP.NET 在注册时分配默认用户角色

Question

How can I assign default roles eg standard user upon user registration?

At the moment, I can manually assign roles by editing the table in SQL server but is there a way that a default role can assigned to all users?

I've tried using the solution posted here but it doesn't appear to work for projects using the ASP.NET Core Web Application (Visual Studio 2015).

// POST: /Account/Register
    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Register(RegisterViewModel model, string returnUrl = null)
    {
        ViewData["ReturnUrl"] = returnUrl;
        if (ModelState.IsValid)
        {
            var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
            var result = await _userManager.CreateAsync(user, model.Password);


            if (result.Succeeded)
            {
                // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=532713
                // Send an email with this link
                //var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
                //var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: HttpContext.Request.Scheme);
                //await _emailSender.SendEmailAsync(model.Email, "Confirm your account",
                //    $"Please confirm your account by clicking this link: <a href='{callbackUrl}'>link</a>");
                await _signInManager.SignInAsync(user, isPersistent: false);
                _logger.LogInformation(3, "User created a new account with password.");
                return RedirectToLocal(returnUrl);
            }
            AddErrors(result);
        }

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

Answer 1

I assume you use the default Asp .Net membership and role providers.

if (result.Succeeded)
{
Roles.AddUserToRole(user.UserName, "<role>");
await _signInManager.SignInAsync(user, isPersistent: false);
_logger.LogInformation(3, "User created a new account with password.");
 return RedirectToLocal(returnUrl);
 }

above code helps you to make it working.

Answer 2

Stumbled across this. I had the same problem. This worked for me.

        if (ModelState.IsValid)
        {
            var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
            var result = await UserManager.CreateAsync(user, model.Password);
            if (result.Succeeded)
            {
                string rolname = "User";                    
                var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(context));
                await userManager.AddToRoleAsync(user.Id, rolname);
                await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);

                // For more information on how to enable account confirmation and password reset please visit https://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);
        }