查看模型:
public class MyViewModel
{
[DisplayName("Items")]
public string[] SelectedItemIds { get; set; }
public IEnumerable<SelectListItem> Items { get; set; }
}
控制器:
public class HomeController : Controller
{
public ActionResult Index()
{
var model = new MyViewModel
{
// preselect some items
// leave empty if you want none to be selected initially
SelectedItemIds = new[] { "1", "3" },
// Normally you would fetch those from your database
// hardcoded here for the purpose of the post
Items = Enumerable.Range(1, 10).Select(x => new SelectListItem
{
Value = x.ToString(),
Text = " item " + x
})
};
return View(model);
}
[HttpPost]
public ActionResult Index(string[] selectedItemIds)
{
// here you will get the list of selected item ids
// where you could process them
// If you need to redisplay the same view make sure that
// you refetch the model items once again from the database
...
}
}
視圖(剃刀):
@model AppName.Models.MyViewModel
@using (Html.BeginForm())
{
@Html.LabelFor(x => x.SelectedItemIds)
@Html.ListBoxFor(
x => x.SelectedItemIds,
new SelectList(Model.Items, "Value", "Text")
)
<input type="submit" value="OK" />
}
視圖(WebForms的):
<% using (Html.BeginForm()) { %>
<%= Html.LabelFor(x => x.SelectedItemIds) %>
<%= Html.ListBoxFor(
x => x.SelectedItemIds,
new SelectList(Model.Items, "Value", "Text")
) %>
<input type="submit" value="OK" />
<% } %>