Asp.Net身份 - 不区分大小写的电子邮件和用户名

问题描述：

有没有办法让Asp.Net身份来区分使用电子邮件地址和用户名？

Is there a way to get Asp.Net Identity to be case insensitive with email addresses and usernames?

目前，如果我称之为FindByEmailAsync（电子邮件），它只会工作，如果电子邮件地址被存储正是因为它是键入的时刻（区分大小写）

At the moment if I call "FindByEmailAsync(email)" it will only work if the email address is being stored exactly as it's is typed (case sensitive)

答

您可以更改用户是如何注册，以便用户名设置为小写，并在同时登录时。

You can change how the user is registered so that the username is set to lowercase and when logging in as well.

有关注册用户，在的AccountController

For registering the user, in the AccountController

    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> Register(RegisterViewModel model)
    {
        if (ModelState.IsValid)
        {
            var user = new ApplicationUser() { UserName = model.Email.ToLowerInvariant(), 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);
            }
        }

和在日志记录：

    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
    {
        if (ModelState.IsValid)
        {
            var user = await UserManager.FindAsync(model.Email.ToLowerInvariant(), model.Password);
            if (user != null)
            {
                await SignInAsync(user, model.RememberMe);
                return RedirectToLocal(returnUrl);
            }
            else
            {
                ModelState.AddModelError("", "Invalid username or password.");
            }
        }

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

Asp.Net身份 - 不区分大小写的电子邮件和用户名

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