Register using username instead of Email in ASP.NET MVC 5?

Question

I have changed the RegisterViewModel to use Username instead of Email and omitted the email part when initialized new ApplicationUser in the Register POST method:

       public async Task<ActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser { UserName = model.Username/*, Email = model.Username*/ };
...

But when I register by username I get the error:

Email cannot be null or empty.

How can I solve this, and is there a way to not allow identical usernames?

Check your code for any other places that the email variable is used and change them accordingly. — Captain Squirrel
– Captain Squirrel, Commented Nov 9, 2016 at 12:40
Possible duplicate of Use Username instead of Email for identity in Asp.net mvc5 — Mladen Oršolić
– Mladen Oršolić, Commented Nov 9, 2016 at 12:41

Salar Afshar · Accepted Answer · 2016-11-09 13:06:36Z

0

you can change your RegisterViewModel to

public class RegisterViewModel 
{
    [Remote("IsUserNameExist", "User", "", ErrorMessage = "this username exist", HttpMethod = "POST")]
    public string UserName { set; get; }
    //todo: other fileds......

}

and write your exist validation actionresul in your UserController

    [HttpPost]
    [AllowAnonymous]
    [OutputCache(Location = OutputCacheLocation.None, NoStore = true,  Duration = 0, VaryByParam = "*")]
    public virtual JsonResult IsUserNameExist(string userName)
    {
        var check = _userService.CheckUserNameExist(userName);
        return check ? Json(false) : Json(true);
    }

answered Nov 9, 2016 at 13:06

Salar Afshar

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