How to parse my json string in C#(4.0)using Newtonsoft.Json package?
Solution 1
foreach (var data in dynObj.quizlist)
{
foreach (var data1 in data.QUIZ.QPROP)
{
Response.Write("Name" + ":" + data1.name + "<br>");
Response.Write("Intro" + ":" + data1.intro + "<br>");
Response.Write("Timeopen" + ":" + data1.timeopen + "<br>");
Response.Write("Timeclose" + ":" + data1.timeclose + "<br>");
Response.Write("Timelimit" + ":" + data1.timelimit + "<br>");
Response.Write("Noofques" + ":" + data1.noofques + "<br>");
foreach (var queprop in data1.QUESTION.QUEPROP)
{
Response.Write("Questiontext" + ":" + queprop.questiontext + "<br>");
Response.Write("Mark" + ":" + queprop.mark + "<br>");
}
}
}
Solution 2
You can use this tool to create appropriate c# classes:
http://jsonclassgenerator.codeplex.com/
and when you will have classes created you can simply convert string to object:
public static T ParseJsonObject<T>(string json) where T : class, new()
{
JObject jobject = JObject.Parse(json);
return JsonConvert.DeserializeObject<T>(jobject.ToString());
}
Here that classes: http://ge.tt/2KGtbPT/v/0?c
Just fix namespaces.
Solution 3
You could create your own class of type Quiz and then deserialize with strong type:
Example:
quizresult = JsonConvert.DeserializeObject<Quiz>(args.Message,
new JsonSerializerSettings
{
Error = delegate(object sender1, ErrorEventArgs args1)
{
errors.Add(args1.ErrorContext.Error.Message);
args1.ErrorContext.Handled = true;
}
});
And you could also apply a schema validation.
http://james.newtonking.com/projects/json/help/index.html
Solution 4
This is a simple example of JSON parsing by taking example of google map API. This will return City name of given zip code.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Newtonsoft.Json;
using System.Net;
namespace WebApplication1
{
public partial class WebForm1 : System.Web.UI.Page
{
WebClient client = new WebClient();
string jsonstring;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
jsonstring = client.DownloadString("http://maps.googleapis.com/maps/api/geocode/json?address="+txtzip.Text.Trim());
dynamic dynObj = JsonConvert.DeserializeObject(jsonstring);
Response.Write(dynObj.results[0].address_components[1].long_name);
}
}
}
Saravanan
I am Saravanan MCA Graduate.I am working as a Senior Developer in java environment. Email:[email protected]
Updated on May 13, 2020Comments
-
Saravanan almost 4 years
I am new to JSON.In my asp.net application i want to parse the json string.So, i have used Newtonsoft.Json package for reading and writing json data.Now, i can able to parse the simple json data.But now i have received some complex json data for parsing.So, i little bit struck on it.
This is JSON Data:
{ quizlist: [ { QUIZ: { 'QPROP': [ { 'name': 'FB', 'intro': '', 'timeopen': '1347871440', 'timeclose': '1355733840', 'timelimit': '0', 'noofques': '5', 'QUESTION': { 'QUEPROP': [ { 'questiontext': 'Scienceisbasedont', 'penalty': '0.3333333', 'qtype': 'shortanswer', 'answer': 'cause-and-effect', 'mark' : '5', 'hint': '' }, { 'questiontext': 'otherscientistsevaluateit', 'penalty': '0.3333333', 'qtype': 'shortanswer', 'answer': 'Peerreview', 'mark' : '5', 'hint': '' }, { 'questiontext': 'Watchingavariety', 'penalty': '0.3333333', 'qtype': 'shortanswer', 'answer': 'inductive', 'mark' : '5', 'hint': '' }, { 'questiontext': 'coveriesorideas', 'penalty': '0.3333333', 'qtype': 'shortanswer', 'answer': 'paradigmshift', 'mark' : '5', 'hint': '' }, { 'questiontext': 'proportions', 'penalty': '0.3333333', 'qtype': 'shortanswer', 'answer': 'fixed', 'mark' : '5', 'hint': '' } ] } } ] } } ] }
This is my C# Code :
dynamic dynObj = JsonConvert.DeserializeObject(jsonString); foreach (var data in dynObj.quizlist) { foreach (var data1 in data.QUIZ.QPROP) { Response.Write("Name" + ":" + data1.name + "<br>"); Response.Write("Intro" + ":" + data1.intro + "<br>"); Response.Write("Timeopen" + ":" + data1.timeopen + "<br>"); Response.Write("Timeclose" + ":" + data1.timeclose + "<br>"); Response.Write("Timelimit" + ":" + data1.timelimit + "<br>"); Response.Write("Noofques" + ":" + data1.noofques + "<br>"); } }
I can able to parse until noofques object in QPROP array objects.Now have to parse data.QUIZ.QPROP.QUESTION.QUEPROP array objects also...
But i failed to parse fully...
Please guide me to get out of this issue...