在C#中解析Json字符串

Question

我正在尝试在C#中读取Json字符串,但是我无法弄清楚如何将字符串解析为C#.说我有以下Json字符串

[
    {
        "AppName": {
            "Description": "Lorem ipsum dolor sit amet",
            "Value": "1"
        },
        "AnotherAppName": {
            "Description": "consectetur adipisicing elit",
            "Value": "String"
        },
        "ThirdAppName": {
            "Description": "sed do eiusmod tempor incididunt ut labore et dolore magna aliqua",
            "Value": "Text"
        },
        "Application": {
            "Description": "Ut enim ad minim veniam",
            "Value": "100"
        },
        "LastAppName": {
            "Description": "quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat",
            "Value": "ZZZ"
        }
    }
]

我想使用像这样的格式将其解析为arraylist或字典

descriptionList["AppName"] = "Lorem ipsum dolor sit amet";
valueList["AppName"] = "1";

我一直在玩Json.Net,但我见过的例子并没有让我清楚地知道我应该怎么做.实现这一目标的最佳方法是什么？不能像在jQuery中那样使用foreach语句吗？

Answer 1

我在我的项目中使用Json.net,效果很好.在你的情况下,你可以这样做来解析你的json:

编辑:我更改了代码,因此它支持读取您的json文件(数组)

要解析的代码:

void Main()
{
    var json = System.IO.File.ReadAllText(@"d:\test.json");

    var objects = JArray.Parse(json); // parse as array  
    foreach(JObject root in objects)
    {
        foreach(KeyValuePair<String, JToken> app in root)
        {
            var appName = app.Key;
            var description = (String)app.Value["Description"];
            var value = (String)app.Value["Value"];

            Console.WriteLine(appName);
            Console.WriteLine(description);
            Console.WriteLine(value);
            Console.WriteLine("\n");
        }
    }
}

输出:

AppName
Lorem ipsum dolor sit amet
1


AnotherAppName
consectetur adipisicing elit
String


ThirdAppName
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua
Text


Application
Ut enim ad minim veniam
100


LastAppName
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat
ZZZ

顺便说一下,你可以使用LinqPad来测试你的代码,比我想的在Visual Studio中创建解决方案或项目更容易.

Answer 2

json:
[{"ew":"vehicles","hws":["car","van","bike","plane","bus"]},{"ew":"countries","hws":["America","India","France","Japan","South Africa"]}]

c#代码:只取一个值,例如单词"bike".

//res=[{"ew":"vehicles","hws":["car","van","bike","plane","bus"]},{"ew":"countries","hws":["America","India","France","Japan","South Africa"]}]

         dynamic stuff1 = Newtonsoft.Json.JsonConvert.DeserializeObject(res);
         string Text = stuff1[0].hws[2];
         Console.WriteLine(Text);

输出:

bike

Answer 3

你可以尝试System.Web.Script.Serialization.JavaScriptSerializer:

var json = new JavaScriptSerializer();
var data = json.Deserialize<Dictionary<string, Dictionary<string, string>>[]>(jsonStr);