Asp.Net Identity - 不区分大小写的电子邮件和用户名

Question

有没有办法让 Asp.Net Identity 的电子邮件地址和用户名不区分大小写？

目前，如果我调用“FindByEmailAsync(email)”，只有在电子邮件地址完全按照键入的方式存储(区分大小写)时，它才会起作用

Answer 1

您可以更改用户的注册方式，以便在登录时将用户名设置为小写。

用于在 AccountController 中注册用户

    [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);
            }
        }

登录:

    [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);
    }