当客户端验证启用MVC3时发生回发

Question

我启用了客户端验证，实际上它正在工作，我在提交表单时看到了必填字段的错误消息。但是，尽管客户端验证已被解雇，但也发生了回发。我的理解是客户端验证应该抑制回发。有人可以向我确认这是预期的行为，看看这个观点是否有任何不妥之处。非常感谢。

这是有问题的观点

@model Intranet.ViewModels.Student.CreateStudentViewModel
@{
    ViewBag.Title = "Create Student";
}
<h2>
    Create Student</h2>
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)

    <table class="detailViewTable">
        <tr>
            <td>@Html.LabelFor(c=>c.Contact.Title)</td>
            <td>@Html.EditorFor(c=>c.Contact.Title)</td>
            <td>@Html.ValidationMessageFor(c=>c.Contact.Title)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(c=>c.Contact.FirstName)</td>
            <td>@Html.EditorFor(c=>c.Contact.FirstName)</td>
            <td>@Html.ValidationMessageFor(c=>c.Contact.FirstName)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(c=>c.Contact.LastName)</td>
            <td>@Html.EditorFor(c=>c.Contact.LastName)</td>
            <td>@Html.ValidationMessageFor(c=>c.Contact.LastName)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(c=>c.Contact.Phone)</td>
            <td>@Html.EditorFor(c=>c.Contact.Phone)</td>
            <td>@Html.ValidationMessageFor(c=>c.Contact.Phone)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(c=>c.Contact.AltPhone)</td>
            <td>@Html.EditorFor(c=>c.Contact.AltPhone)</td>
            <td>@Html.ValidationMessageFor(c=>c.Contact.AltPhone)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(c=>c.Contact.Email)</td>
            <td>@Html.EditorFor(c=>c.Contact.Email)</td>
            <td>@Html.ValidationMessageFor(c=>c.Contact.Email)</td>
        </tr>
        <tr>
            <td>Guardian 1</td>
            <td>@Html.DropDownListFor(c=>c.Guardian1ID, new SelectList(Model.Contacts, "ID", "FullName"))</td>
        </tr>
        <tr>
            <td>Guardian 2</td>
            <td>@Html.DropDownListFor(c=>c.Guardian2ID, new SelectList(Model.Contacts, "ID", "FullName"))</td>
        </tr>

    </table>
    <p>
        <input type="submit" value="Create" />
    </p>

}
<div>
    @Html.ActionLink("Back to List", "List")
</div>

这是CreateStudentViewModel

public class CreateStudentViewModel
    {
        public int ID { get; set; }
        public ContactViewModel Contact { get; set; }
        public int Guardian1ID { get; set; }
        public int Guardian2ID { get; set; }
        public List<ContactViewModel> Contacts { get; set; }  
    }

包含验证属性的ContactViewModel。

public class ContactViewModel
    {
        public int ID { get; set; }

        [Required(ErrorMessage = "Title is required")]
        public string Title { get; set; }

        [Required(ErrorMessage = "First Name is required")]
        [DisplayName("First Name")]
        public string FirstName { get; set; }

        [Required(ErrorMessage = "Last Name is required")]
        [DisplayName("Last Name")]
        public string LastName { get; set; }

        public string Phone { get; set; }

        [DisplayName("Alternate Phone")]
        public string AltPhone { get; set; }

        public string Email { get; set; }

        public string FullName
        {
            get { return string.Format("{0} {1} {2}", Title, FirstName, LastName); }
        }