如何修复“ EnumDropDownListFor创建新帐户”

Question

我的注册页面上有一个EnumDropDownListFor控件，您可以从两个选项中进行选择。我尝试使用两个选项注册两个帐户，但两个帐户始终默认为第一个选项。

这在测试中以调试方式运行代码时始终有效，但是现在代码已在构建中，即使没有更改任何代码也不再起作用。

下拉列表枚举

public enum RaceName 
{ 
    Terran, 
    AsphaMiner 
}

Register.cshtml

// rest of file

<div class="form-group">                                        
@Html.LabelFor(m => m.RaceName, new { @class = "col-md-2 control-label" })
<div class="col-md-6">                                   
@Html.EnumDropDownListFor(m => m.RaceName, new { @class = "form-control" })
</div></div>

// more of file below too

AccountController.cs

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
   if (ModelState.IsValid)
   {
      var user = new ApplicationUser
      {
               UserName = model.UserName,
               Email = model.Email
               RaceName = model.RaceName,
   // rest of controller

IdentityModels.cs

public class ApplicationUser : IdentityUser
{
    public RaceName RaceName { get; set; }
    [NotMapped]
    public Race PlayerRace { get; set; }

    public ApplicationUser()
    {
        PlayerRace = new Race(this);
    }
    // rest of default code

Race.cs

public virtual ApplicationUser RaceOwner { get; set; }
public Race(ApplicationUser user)
{
    RaceOwner = user;
}
// other properties with [NotMapped] attribute so
// static values are not saved to sql db

RegisterViewModel.cs

public class RegisterViewModel
{
    [Required]
    [EmailAddress]
    [Display(Name = "Email")]
    public string Email { get; set; }

    [Required]
    [Display(Name = "Username")]
    public string UserName { get; set; }

    [Required]
    [StringLength(100, ErrorMessage = "The {0} must be at least {2} 
    characters long.", MinimumLength = 6)]
    [DataType(DataType.Password)]
    [Display(Name = "Password")]
    public string Password { get; set; }

    [DataType(DataType.Password)]
    [Display(Name = "Confirm password")]
    [Compare("Password", ErrorMessage = "The password and confirmation 
    password do not match.")]
    public string ConfirmPassword { get; set; }

    public RaceName RaceName { get; set; }        
}

因此，用户创建了一个帐户，输入了用户名电子邮件密码等，然后从DropDownList的2个选项中进行选择，但它始终选择第一个选项，并且在调试和构建之间我没有做任何更改版本。

如果我选择AsphaMiner，它将设置为Terran；并且如果我选择Terran，则会将其设置为Terran。

有人能推荐什么吗？