获取数组长度 JSON.Net

问题描述

如何获得在 C# 中使用 json.net 获得的 JSON 数组的长度?发送 SOAP 调用后，我得到一个 JSON 字符串作为答案，我使用 json.net 对其进行解析.

How can I get the length of a JSON Array I get using json.net in C#? After sending a SOAP call I get a JSON string as answer, I use json.net to parse it.

我得到的json示例:

Example of the json I got:

{"JSONObject": [
    {"Id":"ThisIsMyId","Value":"ThisIsMyValue"},
    {"Id":"ThisIsMyId2","Value":"ThisIsMyValue2"}
]}

然后我解析它并将其写入控制台:

And I parse it and write it in console:

var test = JObject.Parse (json);
Console.WriteLine ("Id: {0} Value: {1}", (string)test["JSONObject"][0]["Id"], (string)test["JSONObject"][0]["Value"]);

这就像一个咒语，只是我不知道 JSONObject 的长度，但我需要在 for 循环中进行.我只是不知道如何获得 test["JSONObject"]

This works like a spell, only I don't know the length of the JSONObject, but I need to do it in a for loop. I only have no idea how I can get the length of test["JSONObject"]

但是我想像 test["JSONObject"].Length 这样的东西太简单了 :(..

But something like test["JSONObject"].Length would be too easy I guess :(..

推荐答案

您可以将对象强制转换为 JArray，然后使用 Count 属性，如下所示:

You can cast the object to a JArray and then use the Count property, like so:

JArray items = (JArray)test["JSONObject"];
int length = items.Count;

然后您可以按如下方式循环项目:

You can then loop the items as follows:

for (int i = 0; i < items.Count; i++)
{
    var item = (JObject)items[i];
    //do something with item
}

根据 Onno (OP)，您还可以使用以下内容:

---

According to Onno (OP), you can also use the following:

int length = test["JSONObject"].Count();

但是，我个人还没有确认这会起作用

However, I have not personally confirmed that this will work

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