3
我已经搜索过,无法找到此问题的具体答案。我有一个模型,它有一个名为Weekdays的字典对象,我想将它映射到一组表单字段,其中键是当天,值是如果它被选中或不是。问题模型绑定复选框以字典对象
所以形式如下:
Monday [ ]
Tuesday [ ]
Wednesday [ ]
Thursday [ ]
Friday [ ]
我的模型看起来是这样的:
public class Event
{
[Required(ErrorMessage="All must be checked")]
public Dictionary<string,bool> Weekdays { get; set; }
}
控制器:
namespace MvcApplication6.Controllers
{
public class HomeController : Controller
{
public ActionResult Index()
{
Event e = new Event();
e.Name = "awesome";
e.Weekdays = new Dictionary<string, bool>()
{
{"Monday", false },
{"Tuesday", true },
{"Wednesday", true },
{"Thursday", false },
{"Friday", true },
};
return View("Home", e);
}
[HttpPost]
public ActionResult Index(Event e)
{
var x = e.Weekdays["Monday"];
return View("Home", e);
}
}
}
我的观点:
@model MvcApplication6.Models.Event
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<style>.formErrors{color:Red}</style>
<title>Home</title>
</head>
<body>
<div>
@using (@Html.BeginForm("Index", "Home"))
{
// Weekdays
foreach (var i in Model.Weekdays)
{
@i.Key @Html.EditorFor(model => model.Weekdays[i.Key]) <br />
}
<br /><br /><br />
<input type="submit" value="submit me" />
}
</div>
</body>
</html>
目前,我在foreach循环中得到一个运行时错误,“对象引用未设置为对象的实例”。
这是怎么回事。谢谢。另外,还有更好的方法来完成这个吗?
我想,当你将窗体你得到这个错误,而不是正确的过吗? –
此答案可能提供您需要的信息:http://stackoverflow.com/questions/962189/how-do-i-bind-a-dictionary-to-a-set-of-checkboxes-using-asp-net- mvc –
这也是:http://haacked.com/archive/2008/10/23/model-binding-to-a-list.aspx –