循环遍历多个 JObject 级别并将信息收集为字符串

我使用以下代码从 URL 收集 Json 数据。

            var json = new WebClient().DownloadString("http://steamcommunity.com/id/tryhardhusky/inventory/json/753/6");
            JObject jo = JObject.Parse(json);
            JObject ja = (JObject)jo["rgDescriptions"];

            int cCount = 0;
            int bCount = 0;
            int eCount = 0;

            foreach(var x in ja){

                // I'm stuck here.
                string type = (Object)x["type"];

            }

            CUAI.sendMessage("I found: " + ja.Count.ToString());

在我到达 foreach 语句之前，一切都运行良好。
这是 JSON 数据的片段。

{
    "success": true,
    "rgInventory": {
        "Blah other stuff"
    },
    "rgDescriptions": {
        "637390365_0": {
            "appid": "753",
            "background_color": "",
            "type": "0RBITALIS Trading Card"
        "175240190_0": {
            "appid": "753",
            "background_color": "",
            "type": "Awesomenauts Trading Card"
        },
        "195930139_0": {
            "appid": "753",
            "background_color": "",
            "type": "CONSORTIUM Emoticon"
        }
    }
}

我想循环遍历 rgDescriptions 中的每个项目并获取typedata 作为字符串，然后检查它是否包含background, emoticon or trading card.
我知道我可以使用if(type.Contains("background"))检查项目类型是什么，但我在 foreach 循环中遇到问题。

如果我使用foreach(JObject x in ja)我得到一个cannot convert type Error.
如果我使用foreach(Object x in ja)它提出了一个Cannot apply indexing of type object.
当我使用时也会出现此错误foreach(var x in ja) and string type = (JObject)x["type"];

谁能告诉我我做错了什么吗？

您的 JSON 中有一些错误。使用 jsonlint.com 检查一下。我认为它应该看起来像这样：

{
    "success": true,
    "rgInventory": {
        "Blah other stuff": ""
    },
    "rgDescriptions": {
        "637390365_0": {
            "appid": "753",
            "background_color": "",
            "type": "0RBITALIS Trading Card"
        },
        "175240190_0": {
            "appid": "753",
            "background_color": "",
            "type": "Awesomenauts Trading Card"
        },
        "195930139_0": {
            "appid": "753",
            "background_color": "",
            "type": "CONSORTIUM Emoticon"
        }
    }
}

您可以使用 JProperty、JToken 和 SelectToken 方法来获取类型：

var json = new WebClient().DownloadString("http://steamcommunity.com/id/tryhardhusky/inventory/json/753/6");
JObject jo = JObject.Parse(json);

foreach (JProperty x in jo.SelectToken("rgDescriptions"))
{
    JToken type = x.Value.SelectToken("type");
    string typeStr = type.ToString().ToLower();

    if (typeStr.Contains("background"))
    {
        Console.WriteLine("Contains 'background'");
    }
    if (typeStr.Contains("emoticon"))
    {
        Console.WriteLine("Contains 'emoticon'");
    }
    if (typeStr.Contains("trading card"))
    {
        Console.WriteLine("Contains 'trading card'");
    }
}