Asp.net mvc 4 在Asp.NETMVC4中将dropdownlist值从视图传递到控制器，而不使用jquery或javascript？

我是Asp.NETMVC4新手，我的问题是

是否可以在不使用jquery或javascript的情况下将下拉列表值从视图发送到控制器。 我总是把Department的值设为null

我的模型如下

 public partial class Employee
{
    public int Id { get; set; }
    public string Name { get; set; }
    public Nullable<int> Age { get; set; }

    [DisplayFormat(DataFormatString="{0:d}",ApplyFormatInEditMode=true)]
    public Nullable<System.DateTime> DOB { get; set; }

    public string Address { get; set; }
    public Nullable<int> DepartmentId { get; set; }

    public virtual Department Department { get; set; }
}

[HttpPost]
    public ActionResult Edit(Employee modelEmployee)
    {
        if (ModelState.IsValid)
        {
            db.Employees.Add(modelEmployee);
            db.SaveChanges();
            return RedirectToAction("Index");
        }            
        return View(modelEmployee);
    }

@Html.DropDownListFor(m=>m.Department,new SelectList(Model.Department,"Id","Name",
Model.DepartmentId),"Select Department")

我的看法如下

 public partial class Employee
{
    public int Id { get; set; }
    public string Name { get; set; }
    public Nullable<int> Age { get; set; }

    [DisplayFormat(DataFormatString="{0:d}",ApplyFormatInEditMode=true)]
    public Nullable<System.DateTime> DOB { get; set; }

    public string Address { get; set; }
    public Nullable<int> DepartmentId { get; set; }

    public virtual Department Department { get; set; }
}

[HttpPost]
    public ActionResult Edit(Employee modelEmployee)
    {
        if (ModelState.IsValid)
        {
            db.Employees.Add(modelEmployee);
            db.SaveChanges();
            return RedirectToAction("Index");
        }            
        return View(modelEmployee);
    }

@Html.DropDownListFor(m=>m.Department,new SelectList(Model.Department,"Id","Name",
Model.DepartmentId),"Select Department")

---

使用ViewBag在控制器中创建选择项：

[HttpGet]
public ActionResult Edit(int id)
{
    var employee = db.Employees.Find(id);
    CreateDepartmentsDropdown();
    return View(employee);
}

private void CreateDepartmentsDropdown()
{
    ViewBag.Departments = db
        .Departments
        .ToList()
        .Select(c => new SelectListItem
        {
            Text = c.Name,
            Value = c.Id.ToString()
        });
}

视图：

---

这个问题似乎已经解决了，但更简单的是，传递绑定到下拉列表的同一个集合属性，而不是传递用于保存所选数据的属性类型，这是一个错误

@devqon提供了使用普通html助手的解决方案，但也可以通过强类型助手来实现

@Html.DropDownListForm=>m.Department，新建SelectListModel.Department，Id，名称，Model.DepartmentId，选择部门

将上述代码替换为

---

@Html.DropDownListForm=>m.DepartmentId，new SelectListModel.Department，Id，Name，Model.DepartmentId，Select Department

您不能将Select或任何其他控件绑定到复杂对象。绑定到ProeProperty DepartmentId，但您不能创建SelectList模型。Department是单个对象，而不是CollectionArh。像OP一样使用强类型助手！设置所选属性是无意义的所选选项是属性DepartmentId的值，它可以是ViewBag.Departments=new SelectListdb.Departments，ID，Name；