MVC 5 - 字段CreateDate必须是日期

Question

我在字段= 15-06-2014 中有默认日期，提交后我看到错误沟通：字段CreateDate必须是日期。 - 为什么？

我的ViewModel：

public class CommentViewModel
{
    [Required(ErrorMessage = "CreateDate is required")]
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy}")]
    [DataType(DataType.Date, ErrorMessage = "Please enter a valid date")]
    public DateTime CreateDate { get; set; }

    public CommentViewModel()
    {
        CreateDate = DateTime.UtcNow;
    }
}

我的行动：

public ActionResult Index()
{
    CommentViewModel commentViewModel = new CommentViewModel();

    return View(commentViewModel);
}

我的观点：

@model WebApplication5.Models.CommentViewModel


@using (Html.BeginForm()) 
{    
    @Html.ValidationSummary(true)

    @Html.LabelFor(model => model.CreateDate, new { @class = "control-label col-md-2" })
    @Html.EditorFor(model => model.CreateDate)
    @Html.ValidationMessageFor(model => model.CreateDate)

    <input type="submit" value="Create" class="btn btn-default" />
}


@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}