Question

当我在表单上输入数据时，我收到错误说＆＃34;将字符串转换为datetime时，解析字符串以获取将每个变量放入DateTime对象＆＃34;之前的日期。我尝试更改字符串格式并对viewModel.Date，viewModel.Time进行了硬编码，但是当有人提出克服此问题的方法时，我仍然会收到错误吗？

public ActionResult Create(GigFormViewModel viewModel)
{
    var artistId = User.Identity.GetUserId();
    var artist = _context.Users.Single(u => u.Id == artistId);
    var genre = _context.Genres.Single(g => g.Id == viewModel.Genre);
    var gig = new Gig
    {
        Àrtist = artist,
        DateTime = DateTime.Parse(string.Format("{0}{1}", viewModel.Date, viewModel.Time)),
        Genre = genre,
        Venue = viewModel.Venue
    };
    _context.Gigs.Add(gig);
    _context.SaveChanges();

    return RedirectToAction("Index", "Home");
}


public class Gig
{
    public int Id { get; set; }

    [Required]
    public ApplicationUser Àrtist { get; set; }

    public DateTime DateTime { get; set; }

    [Required]
    [StringLength(255)]
    public string Venue { get; set; }

    [Required]
    public Genre Genre { get; set; }

}

public class GigFormViewModel
{
    public string Venue { get; set; }
    public string Date { get; set; }
    public string Time { get; set; }
    public int Genre { get; set; }
    public IEnumerable<Genre> Genres { get; set; }
}

Answer 1

问题在于：

DateTime = DateTime.Parse(string.Format("{0}{1}", viewModel.Date, viewModel.Time)),

你应该在{0}和{1}之间加上“空格”：

DateTime = DateTime.Parse(string.Format("{0} {1}", viewModel.Date, viewModel.Time)),

日期时间输入格式错误

1 个答案: