如何从JSON字符串数组中获取值

Question

I am passing the following array via jQuery ajax and JSON stringify...

"sessionsArray":[{"eventNum":"15200","title":"Integrity"},{"eventNum":"15210","title":"Estate and Probate"}]

to ac#/.NET web service. I need to loop over and extract the values but I'm having fuzzy brain today and cannot get the syntax correct. Help please?

[WebMethod(EnableSession = true)]
    public string saveRegistration(Dictionary <string, string> sessionsArray)

List<string[]> eventsList = new List<string[]>();

foreach (var eventItem in sessionsArray)
{
    eventsList.Add(new[] { eventItem.Key, eventItem.Value });
}

Thanks.

Answer 1

我知道了。

Dictionary <string, string>[] sessionsArray

Answer 2

I guess I would define a model first for my objects like the following:

public class SessionsArray
{
 public string eventNum { get; set; }
 public string title { get; set; }
}

public class RootObject
{
  public List<SessionsArray> sessionsArray { get; set; }
}

Then I would parse the json with JSON.NET:

string json = "{'sessionsArray':[{'eventNum':'15200','title':'Integrity'},{'eventNum':'15210','title':'Estate and Probate'}]}";
var root = JsonConvert.DeserializeObject<RootObject>(json);

Answer 3

You can use Newtonsoft.Json as follow :

var jsonData = JObject.Parse(sessionArray); Then you have JObject. You can cast this to JArray and you can use for loop to get data.

for(int i = 0 ; i<(JArray)jsonData.Count;i++)
{
var data = jsonData[i];
}