c# – 实体框架Core 2.0将枚举枚举到SQL Server中的tinyint会引

InvalidCastException: Unable to cast object of type ‘System.Byte’ to type ‘System.Int32’.

我想这样做是因为在SQL Server中,int是4个字节而tinyint是1个字节.

相关代码：
实体：

namespace SOMapping.Data
{
    public class Tag
    {
        public int Id { get; set; }

        public TagType TagType { get; set; }
    }

    public enum TagType
    {
        Foo,Bar
    }
}

的DbContext：

using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;

namespace SOMapping.Data
{
    public class ApplicationDbContext : IdentityDbContext
    {
        public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
            : base(options)
        {
        }

        public DbSet<Tag> Tags { get; set; }

        protected override void OnModelCreating(ModelBuilder builder)
        {
            builder.Entity<Tag>().Property(m => m.TagType).HasColumnType("smallint");

            base.OnModelCreating(builder);
        }
    }
}

查询：

using System.Linq;
using Microsoft.AspNetCore.Mvc;
using SOMapping.Data;

namespace SOMapping.Controllers
{
    public class HomeController : Controller
    {
        private ApplicationDbContext _applicationDbContext;

        public HomeController(ApplicationDbContext applicationDbContext)
        {
            _applicationDbContext = applicationDbContext;
        }

        public IActionResult Index()
        {
            var tags = _applicationDbContext.Tags.ToArray();
            return View();
        }
    }
}

我有没有办法让这项工作成为可能,所以我不需要使用所有枚举空间的4倍空间？