asp.net-mvc – 帖子上的Mvc模型ID 0

我有一个模型的编辑页面.当我将模型发布回我的控制器时,Id属性为0.如何在帖子上维护Id属性？

我正在发布要查看的模型,因此在get请求中设置了Id属性.我的代码如下.

视图：

@model xandra.Models.ProjectModel

@using(Html.BeginForm())
{ 
    @Html.HiddenFor(m => m.Id) 
    @Html.LabelFor(m => m.Name)
    @Html.TextBoxFor(m => m.Name)

    <br />

    @Html.LabelFor(m => m.Description)
    @Html.TextAreaFor(m => m.Description)

    <br />

    @Html.LabelFor(m => m.Website)
    @Html.TextBoxFor(m => m.Website)

    <br />

    @Html.LabelFor(m => m.Active)
    @Html.CheckBoxFor(m => m.Active)

    <input type="submit" value="Save" />
}

控制器：

[Authorize]
[HttpGet]
[InitializeSimpleMembership]
public ActionResult EditProject(string id)
{
    using (var entity = new dixraContext())
    {
        var project = entity.Projects.FirstOrDefault(m => m.UrlName == id);


        return View(project);
    }
}

[Authorize]
[HttpPost]
[InitializeSimpleMembership]
public ActionResult EditProject(ProjectModel model)
{
    using (var entity = new dixraContext())
    {
        var project = entity.Projects.FirstOrDefault(m => m.Id == model.Id);

        project.Name = model.Name;
        project.Description = model.Description;
        project.Website = model.Website;
        project.Tags = model.Tags;
        project.Active = model.Active;

        entity.SaveChanges();

        return RedirectToAction("GetProject",project.UrlName);
    }
}

而我的模特

public class ProjectModel
{
    [Key]
    [required]
    public long Id { get; set; }

    [required(AllowEmptyStrings=false)]
    public string Name { get; set; }

    [required(AllowEmptyStrings=false)]
    public string Description { get; set; }

    [required]
    public DateTime CreatedDate { get; set; }

    [required]
    public int Creator { get; set; }

    public string Website { get; set; }

    [required]
    public int CategoryId { get; set; }

    public virtual List<TagModel> Tags { get; set; }

    public string UrlName { get; set; }

    public bool Active { get; set; }
}

解决方法

我之前见过这种情况,可能是个错误.我已经能够通过不使用特定的视图模板语法添加我需要包含在帖子中的属性来解决它.

而不是这个：

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

用这个：

<input type="hidden" value="@Model.Id" name="Id"/>