如何获取通用字典中的值？

Question

I have a json string like this:

{
  "ipaddress": "xxx",
  "hostname": "comcast.xxx",
  "popup": {
    "position": "1256",
    "pagename": "home"
  }
}

In my Windows Form code I've been using JavaScriptSerializer for phare those line to dictionary.

var obj = new JavaScriptSerializer().Deserialize<Dictionary<string, object>>(json);

It is working fine at the moment, but I don't know how to get value inside popup ? Because it's another dictionary.

[7] = {[popup, System.Collections.Generic.Dictionary`2[System.String,System.Object]]}

Answer 1

The fastest (yet unsafe) way of doing it is like this is via the indexer:

First extract the first dictionary and cast, since the first dictionary will yield an object of type object :

var popup = (Dictionary<string, object>)obj["popup"];

Then, you extract the values based on keys:

var position = popup["position"];
var pagename = popup["pagename"];

If you're not sure both keys will exist in the result, you can use Dictionary.TryGetValue if they exist:

obj position;
if (!popup.TryGetValue("position", out position))
{
    // Key isn't in the dictionary.
}

Answer 2

Use JSON .Net , then simply:

JObject dynJson = JObject.Parse(jsonString);

followed by:

string data = dynJson["popup"]["position"];

JObject.Parse