如何读取JSON数据? [英] How to read JSON data?

问题描述

这是json数据格式吗?

Is this json data format?

string json = {"answer":"Line 1","mark": 1},{"answer":"Line 3","mark": 1}

我尝试下面的代码，但它仅适用于一个参数.例如:{"answer":"Line 1","mark": 1}.我尝试拆分json字符串，但这不是最好的方法.

I try below code but it only working with one param. ex: {"answer":"Line 1","mark": 1}. I try split json string but it isn't best way.

JObject jObject = JObject.Parse(json );

string asw = jObject["answer"].ToString();
int mark = (int)jObject["mark"];

txtAnswer.Text = asw + "////" + mark + "\n";

推荐答案

这是一个非常基本的JSON问题，许多教程都可以为您解答.

This is a very basic JSON question which any number of tutorials could've answered for you.

它是有效的JSON吗?不， JSONLint 可以告诉你.

Is it valid JSON ? No, and JSONLint could've told you that.

您如何阅读它?

首先，将您的JSON放在方括号中，这样它才有效.

First, wrap your JSON in square brackets so it's valid.

然后，定义一个class以便将记录存储在以下位置:

Then, define a class to store the records in:

public class Something
{
    public string answer { get; set; }
    public string mark { get; set; }
}

最后，使用JSON.Net将您的字符串转换为这些记录的列表.

And finally, use JSON.Net to convert your string into a list of these records.

string json = "[{\"answer\":\"Line 1\",\"mark\": 1},{\"answer\":\"Line 3\",\"mark\": 1}]";

List<Something> records = JsonConvert.DeserializeObject<List<Something>>(json);         //  JSON.Net

foreach (Something record in records)
{
    System.Diagnostics.Trace.WriteLine(string.Format("Answer: {0}, Mark: {1}", record.answer, record.mark));
}

那样简单.

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