如何在JSON字符串中搜索字段? [英] How to search JSON string for fields?

问题描述

我有一个JSON字符串:[{"number":"123-456-789","array":["1", "2"]}].我想检查此JSON是否包含"number"字段.我在尝试什么:

I have a JSON string: [{"number":"123-456-789","array":["1", "2"]}]. I want check to see if this JSON contains a "number" field. What I am trying:

string jsonString = [{"number":"123-456-789","array":["1", "2"]}];
Newtonsoft.Json.Linq.JArray jsonObject = JArray.Parse(jsonString);

然后如何在此jsonObject中搜索"指定的字段?

How do I then "search" this jsonObject for a specified field?

推荐答案

如果要测试"number"属性是否存在，则可以使用:

If you would like to test if the "number" property exists, then you can use:

bool exists = jsonObject[0].Children<JProperty>().Any(p => p.Name == "number");

如果要获取数字"属性的值，则可以使用

If you want to get the value of the "number" property, then you can use

string number = jsonObject[0]["number"].Value<string>();

修改 这是获取"array"属性的方法

Edit Here is how to get the "array" property

string[] arr = jsonObject[0]["array"].Values<string>().ToArray();

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