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首先,我对此很陌生,所以如果这是一个在其他地方回答的简单问题,请在此处链接我;我不想浪费任何人的时间(我在发布之前尝试了很长时间)。

因此,继续前进,我在 MVC3 项目中更新我的数据库中的信息(使用 EntityFramework)时遇到了一些问题。我有一个配置文件控制器(现在使用静态信息和可为空的 int 进行测试),如下所示:

public ViewResult Edit(int? memberID)  
{  
    Member member = repository.Members.GetMember(12985);  
    return View(new ProfileEditViewModel  
    {  
        MemberID = member.id,  
        FirstName = member.fname,  
        LastName = member.lname,  
        HomePhone = member.home_phone,  
        CellPhone = member.cell_phone,  
        Address = member.street,  
        City = member.city,  
        State = member.state,  
        Zip = member.zip,  
        Email = member.email,  
        Sex = member.sex,  
        MemberType = member.membertype,  
        TypeOfCar = member.typeofcar  
    });  
}  

然后我得到了一个像这样开头的强类型视图:

@using (Html.BeginForm()) {

    <div class="editor-label">
        <label for="fname">First Name:</label>
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.FirstName)
        @Html.ValidationMessageFor(model => model.FirstName)
    </div>

并为我的 ViewModel 的每个属性(除了 MemberID)将表单字符串化。它以

<p>
    <input type="submit" value="Save" />
    @Html.ActionLink("Cancel", "Summary")
</p>

回到我的控制器,然后我有补充方法:

    [HttpPost]
    public ActionResult Edit(ProfileEditViewModel memberViewModel)
    {
        Member member = repository.Members.GetMember(memberViewModel.MemberID);
        if (ModelState.IsValid)
        {
            member.fname = memberViewModel.FirstName;
            member.lname = memberViewModel.LastName;
            member.home_phone = memberViewModel.HomePhone;
            member.cell_phone = memberViewModel.CellPhone;
            member.street = memberViewModel.Address;
            member.city = memberViewModel.City;
            member.state = memberViewModel.State;
            member.zip = memberViewModel.Zip;
            member.email = memberViewModel.Email;
            member.sex = memberViewModel.Sex;
            member.membertype = memberViewModel.MemberType;
            member.typeofcar = memberViewModel.TypeOfCar;

            repository.Members.UpdateMember(member);

            return RedirectToAction("Summary");
        }
        else
        {
            //there is something wrong with the data
            return View(member);
        }

问题是,当我尝试更新成员的信息时,我收到“序列不包含元素”错误,即使我知道我指定的 MemberID 是有效的,因为我能够进入更新页面,并且我知道 UpdateMember方法可以正常工作,因为它在项目的这一部分开始之前已经过全面测试。我在哪里更新错误?

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1 回答 1

1

你错过了一个

@Html.HiddenFor(m => m.MemberID) 

在你看来。

于 2012-08-31T21:52:47.823 回答