列表框在MVC 2 [英] LIstbox in MVC 2

问题描述

我有一个Employee表。从我要加载的员工姓名列表框中。我不从那里我应该开始知道。请指引我。

I am having a Employee Table. From that i want to load the Employee Names in a List Box. I dont know from where i should start. Kindly guide me.

推荐答案

像往常一样通过定义将重新present您的数据视图模型启动：

As always start by defining the view model that will represent your data:

public class Employee
{
    public string Id { get; set; }
    public string Name { get; set; }
}

public class MyViewModel
{
    public string SelectedEmployeeId { get; set; }
    public IEnumerable<Employee> Employees { get; set; }
}

然后，控制器将操作模式：

Then the controller which will manipulate the model:

public class HomeController : Controller
{
    public ActionResult Index()
    {
        var model = new MyViewModel
        {
            // TODO: Instead of hardcoding fetch from your repository
            Employees = Enumerable.Range(1, 5).Select(i => new Employee
            {
                Id = i.ToString(),
                Name = "employee " + i
            })
        };
        return View(model);
    }
}

最后生成视图中的下拉列表：

And finally generate a dropdown list in the view:

<%: Html.DropDownListFor(
    x => x.SelectedEmployeeId, 
    new SelectList(Model.Employees, "Id", "Name")
) %>

如果你想允许多重选择列表框a.k.a一些改变是必要的。首先，你需要员工ID阵列在你的模型：

If you want to allow multiple selections a.k.a ListBox a few changes are necessary. First you need an array of employee ids in your model:

public class MyViewModel
{
    public string[] SelectedEmployeeIds { get; set; }
    public IEnumerable<Employee> Employees { get; set; }
}

然后用在视图中的 ListBoxFor 助手：

<%: Html.ListBoxFor(
    x => x.SelectedEmployeeIds,
    new SelectList(Model.Employees, "Id", "Name")
) %>

这篇关于列表框在MVC 2的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！