ASP.NET Core custom model binder

LoginType.cs

public sealed class LoginType
{
    public string Name { get; set; }

    public static ICollection<LoginType> All { get; set; } = new List<LoginType>();

    public static LoginType Internal = new LoginType(nameof(Internal));
    public static LoginType Customer = new LoginType(nameof(Customer));
    public static LoginType Impersonation = new LoginType(nameof(Impersonation));

    private LoginType(string name)
    {
        Name = name;
        All.Add(this);
    }

    public static LoginType? FromName(string name)
    {
        return All.FirstOrDefault(it => it.Name == name);
    }
}

class LoginTypeModelBinderProvider : IModelBinderProvider
{
    public IModelBinder? GetBinder(ModelBinderProviderContext context)
    {
        if (context?.Metadata.ModelType != typeof(LoginType))
        {
            return null;
        }

        return new LoginTypeBinder();
    }
}

internal class LoginTypeBinder : IModelBinder
{
    public Task BindModelAsync(ModelBindingContext bindingContext)
    {
        if (bindingContext == null)
        {
            throw new ArgumentNullException(nameof(bindingContext));
        }

        var value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
        var loginType = LoginType.FromName((string) value);
        if (loginType != null)
        {
            bindingContext.Result = ModelBindingResult.Success(loginType);
        }
        else
        {
            bindingContext.Result = ModelBindingResult.Failed();
        }

        return Task.CompletedTask;
    }
}