你可以使用asp.net mvc Json（）将C＃字典转换为Javascript关联数组 [英] Can you convert C# dictionary to Javascript associative array using asp.net mvc Json()
问题描述
我最近问这个问题，但是经过一些回应和一些研究，我想改变我实际要求的内容。
I recently asked this question, but after some of the responses and some research, i wanted to change what i was actually asking.
我看到一个关于发送关联的博客帖子数数组从javascript到C＃控制器动作，但我想要相反。我想把json作为一个字典返回给一个客户端（从我的研究中，javascript相当于字典是一个关联数组）。
i have seen a number of blog posts about sending associative arrays from javascript to C# controller action but i want the opposite. I want to return json to a client as a dictionary (from my research the javascript equivalent of dictionary is an associative array).
当我在c sharp并调用Json（），并尝试将其返回到javascript，它只是吹起来，我甚至无法在JavaScript方面放置一个断点。例如：
when i take a regular dictionary in c sharp and call Json() on it and try to return it to javascript, it just blows up and i am unable to even put a breakpoint on the javascript side. For example:
C＃代码：
Dictionary<string, List<CalendarEvent>> dict = events.GroupBy(r => r.Date.ToString("MMM dd, yyyy")).ToDictionary(group => group.Key, group => group.ToList());
return Json(new
{
Dict = dict
}
});
Javascript代码：
Javascript Code:
$.post('/MyController/Refresh', function (data) {
var calendarDictionary = data.Dict;
}, "json");
推荐答案
你可能本来可以更具体一些
You probably could have been a little more specific about the it just blows up part but here's an example that works fine for me:
型号：
public class CalendarEvent
{
public string Name { get; set; }
public DateTime Date { get; set; }
public int Id { get; set; }
}
控制器：
public class HomeController : Controller
{
public ActionResult Index()
{
return View();
}
[HttpPost]
public ActionResult Refresh()
{
var model = new[]
{
new CalendarEvent
{
Id = 1,
Name = "event 1",
Date = DateTime.Now
},
new CalendarEvent
{
Id = 2,
Name = "event 2",
Date = DateTime.Now
},
new CalendarEvent
{
Id = 3,
Name = "event 3",
Date = DateTime.Now.AddDays(2)
},
}
.ToList()
.ConvertAll(a => new
{
a.Name,
a.Id,
Date = a.Date.ToString("MMM dd, yyyy"),
})
.GroupBy(r => r.Date)
.ToDictionary(
group => group.Key,
group => group.Select(x => new { x.Name, x.Id })
);
return Json(new { Dict = model });
}
}
查看：
<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JSON Test</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
$.post('/home/refresh', function(data) {
// TODO : manipulate the data.Dict here
}, 'json');
});
</script>
</head>
<body>
</body>
</html>
返回JSON：
{ "Dict": { "Sep 05, 2010": [ { "Name": "event 1", "Id": 1 },
{ "Name": "event 2", "Id": 2 } ],
"Sep 07, 2010": [ { "Name": "event 3", "Id": 3 } ] } }
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