I am working in VS 2015 and c#.
I have a Json String which has a list of collections, each collection represents an object,
string wsjson =
"{
"customAttributes":
[{"description":"xxxxxxx","id":11,"value":"xxxxxxx"},{"description":"xxxxxxx","id":10,"value":"xxxxxxx"}],
"location":{"account":"xxxxxxx","cabinet":"xxxxxxx"},
"misc":{"approved":false,"archived":false,"deleted":false,"echo":true,"external":false,"favorite":false,"officialLocked":false,"signed":false},
"permissions":[{"xxxxxxx":true,"xxxxxxx":false,"edit":true,"noAccess":false,"share":true,"view":true}],
"standardAttributes":{"aclStatus":"xxxxxxx","created":"\/Date(xxxxxxx)\/","createdBy":"xxxxxxx","createdByGuid":"xxxxxxx","envId":"xxxxxxx","extension":"ndws","id":"xxxxxxx","modified":"\/Date(xxxxxxx)\/","modifiedBy":"xxxxxxx","modifiedByGuid":"xxxxxxx","name":"xxxxxxx","officialVer":1,"size":4,"syncMod":xxxxxxx,"url":"xxxxxxx","versions":1}}"
DataSet wsdataSet = JsonConvert.DeserializeObject<DataSet>(wsjson);
I am getting an error. I tried to follow this (Deserializing Json String into multiple Object types) solution but I am getting error for this line as my jason data is in a string and no function to parse string.
var j = JArray.Parse(data);
Here is the visual image of the jason data.
Actual code block in my program is:
foreach (DataRow row in dataTable.Rows)
{
string wsjson = GetWorkspaceProfile(row[0].ToString());
DataSet wsdataSet = JsonConvert.DeserializeObject<DataSet>(wsjson);
DataTable wsdataTable = wsdataSet.Tables["standardAttributes"];
foreach (DataRow wsrow in wsdataTable.Rows)
{
cmbWorkspaceByCabinet.Items.Add(new KeyValuePair<string, string>(row["envId"].ToString(), wsrow["name"].ToString()));
}
}
Where GetWorkspaceProfile is a string type return function which return me JSON data as string like the image above.
public string GetWorkspaceProfile(string WorkspaceId)
{
string responseStr = "";
string url = "v1/Workspace/" + WorkspaceId + "/info";
RestType type = RestType.GET;
Boolean useXml = false;
RestRequest rr = FormRequest(type, url, useXml);
IRestResponse response;
try
{
response = executeRequest(rr);
responseStr = response.Content;
}
catch (Exception ex)
{
return null;
}
return responseStr;
}
JArray.Parse will not work, because you don't have a json array, it is an object. Also not the all values of that object are collections, for example location is also object, not a collection. You have some options to parse it
Parse root object into Dictionary
JsonConvert.DeserializeObject<Dictionary<string, string>>(wsjson)
then parse every value of the dictionary to array if value is array and to dictionary if value is object.
Create a C# class according to your json data and parse string directly into instance of that class
JsonConvert.DeserializeObject<JsonModel>(wsjson);
where JsonModel is the class you need to create.
You can use JArray and JToken to get the values you want using json path.
Related
I have a JSON string returned from an API and it has 1 field - ApiErrorMessage and an array - BlogCategoryList
entry = "{\"ApiErrorMessage\":null,\"BlogCategoryList\":
[{\"BlogCategoryId\":2,\"BlogCategoryDescr\":\"To Start\"},
{\"BlogCategoryId\":1,\"BlogCategoryDescr\":\"Introduction\"},
{\"BlogCategoryId\":1,\"BlogCategoryDescr\":\"Introduction\"}]}"
In need to extract out that JSON string array to a variable that just has that JSON string array (it should look like below). As as I need to pass it along to be deserialized.
{"BlogCategoryList":
[{"BlogCategoryId":2,"BlogCategoryDescr":"To Start"},
{"BlogCategoryId":1,"BlogCategoryDescr":"Introduction"},
{"BlogCategoryId":1,"BlogCategoryDescr":"Introduction"}]
}
public class BlogCategoryResult
{
public BlogCategoryResult()
{
this.BlogCategoryList = new List<BlogCategory>();
}
public string ApiErrorMessage { get; set; }
public List<BlogCategory> BlogCategoryList { get; set; }
}
My code. Just not sure how to extract it.
// Note: entry is a string type.
var entry = result.Content.ReadAsStringAsync().Result;
// I tried this, but the result is not correct.
string[] resultArray = entry.Split('[');
// I tried this, I get the list but then I get 'Can not convert Array to String' on the last command where I do the cast.
JObject o = JObject.Parse(entry);
string name = (string)o["ApiErrorMessage"];
JArray list = (JArray)o["BlogCategoryList"];
string listofentries = (string)list;
// Deserializing the response (just the list) received from web api and storing into a model.
blogCategoryResult.BlogCategoryList = JsonConvert.DeserializeObject<List<BlogCategory>>
(listofentries);
I think that you should deserialize the entire json by passing the BlogCategoryResult class between the < and > of JsonConvert.DeserializeObject, and the whole entry variable in the ( and ), after that you can easily pick the BlogCategoryList property
var entry = result.Content.ReadAsStringAsync().Result;
blogCategoryResult.BlogCategoryList = JsonConvert
.DeserializeObject<BlogCategoryResult>(entry)
.BlogCategoryList;
I want to access a JSON of this structure in firebase
The structure
{
"questions":{
"English":{
"English_2002":[
{
"correct_ans":"A",
"OptionA":"a coder",
"OptionB":"a hacker",
"OptionC":"a writer",
"OptionD":"a programmer",
"Question":"Who build software"
},
{},
{}
],
"English_2003":[],
}
}
}
I want this structure. In the subject structure, other subjects will come after I exhaust 9 years of English.
My confusion is how to logically get each subject since firebase will only accept the root name questions.
Please I may sound dumb, but I have a very long questions thread almost 55000 lines. Because firebase accept one JSON tree.
Sorry i wasn't very clear i was asking from the stack phone app:
I have a question json tag of the structure above; my question is how will i be able to access the object subject like "english":{
// then accessing the first english array "english":[]
//since am now using firebase.
}
initially each array was individual json file, i have to recreate them into one for firebase sake. this is how i was parsing it then.
public class QuestionParser {
Context context;
public QuestionParser(Context c) {
this.context = c;
}
public ArrayList<Question> getJsonFromUrl(String url, String arrayName)
{
ArrayList<Question> arrayofQuestion = new ArrayList<>();
return arrayofQuestion;
}
// Processing question from JSon file in res > raw folder
public ArrayList<Question> parseQuestionJson(int rawJsonFileId, String arrayName) {
ArrayList<Question> questionList = new ArrayList<>();
String jsonstr = null;
try {
InputStream in = context.getResources().openRawResource(rawJsonFileId);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
jsonstr = sb.toString();
Log.d("REEEEADDD" + this.toString(), jsonstr);
//System.out.println(jsonstr);
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// If the JSON string is empty or null, then return early.
if (TextUtils.isEmpty(jsonstr)) {
return null;
}
try {
JSONObject jsonObject = new JSONObject(jsonstr);
JSONArray jsonArray = jsonObject.getJSONArray(arrayName);
JSONObject jobject;
for (int i = 0; i < jsonArray.length(); i++) {
// TEST
jobject = jsonArray.getJSONObject(i);
String ans = jobject.getString("correct_answer");
String graphic_name = jobject.getString("question_image");
String optionA = jobject.getString("optiona");
String optionB = jobject.getString("optionb");
String optionC = jobject.getString("optionc");
String optionD = jobject.getString("optiond");
String questionNo = jobject.getString("question_number");
String question = jobject.getString("question");
questionList.add(new Question(questionNo, graphic_name, question, optionA, optionB, optionC, optionD, ans));
Log.d("DDD" + this.toString(), String.valueOf(questionList.get(i)));
}
Log.i("ONE QUESTION", questionList.get(50).getQuestion());
} catch (Exception e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return questionList;
}
}
So how can i parse it from firebase because initially, if a student chooses question and year i passes those value as parameter and use them for parsing. but in firebase now i have access to only root firebase name in the get reference e method
To access for example "correct_ans":"A" you would query your firebase like so:
your.firebase.domain/questions/English/English_2002/0/correct_ans
Notice that each level in the json object is represented by a / and the key you want to access whereas in case of an array you simple add the array index. JSON's simple structure also allows simple REST like access
I have a method in my model that queries my SQL Server database and stores the results in a datatable. Then, I am using the following method to convert that datatable into a JSON string.
public void ConvertDataTabletoJSONString(DataTable dt)
{
System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
List<Dictionary<string, object>> rows = new List<Dictionary<string, object>>();
Dictionary<string, object> row;
foreach (DataRow dr in dt.Rows)
{
row = new Dictionary<string, object>();
foreach (DataColumn col in dt.Columns)
{
row.Add(col.ColumnName, dr[col]);
}
rows.Add(row);
}
JSONstring = serializer.Serialize(rows);
}
My controller looks like this:
public ActionResult getMonthlyData()
{
TDR_Monthly viewModel = new TDR_Monthly();
viewModel.getList(0);
return Json(viewModel.JSONstring, JsonRequestBehavior.AllowGet);
}
My view's javascript AmCharts.makechart dataLoader has this:
"dataLoader":
{
"url": "../TDR_MonthlyController/getMonthlyData",
"format": "json"
}
When I "test" the output of that string (by displaying the string's contents in my view, it shows properly in the browser, like so:
[{"REGION":"Atlanta", "STATE_NAME":"Alabama", "STATE":"AL", "CATEGORY_ID":"0 ", "CATEGORY":"No Group", "COUNT":100, "DEFICIENCY1":0, "DEFICIENCY2":0, "RESCIND1":0, "RESCIND2":0}]
However, when I modify the browser's URL to execute the JSON call (http://localhost:49777/Monthly/getMonthlyData) and I open the JSON file, it looks like it has a crap tone of extra spacing and characters:
"[{\"REGION\":\"Atlanta \",\"STATE_NAME\":\"Alabama \",\"STATE\":\"AL\",\"CATEGORY_ID\":\"0 \",\"CATEGORY\":\"No Group \",\"COUNT\":100,\"DEFICIENCY1\":0,\"DEFICIENCY2\":0,\"RESCIND1\":0,\"RESCIND2\":0}]
The view itself informs me that it cannot parse it
Error parsing JSON file: ../TDR_MonthlyController/getMonthlyData
Any help would be appreciated!!!
In getMontlhyData, try changing
return Json(viewModel.JSONstring);
to
return Content(viewModel.JSONstring, "application/json");
because you already have a JSON string. The Json() method is serializing it again.
I have a .net application in which I am getting a response data in json format. I have used the below code to get the json response.
string details= new System.Net.WebClient().DownloadString(url);
var temp = JsonConvert.DeserializeObject(details.ToString());
I have got a json format object in temp and json format string in details
I am getting an output as below from temp
{"data":
[
{"category":"Community","name":"New Page","access_token":"accesstoken_data1","perms":["ADMINISTER","EDIT_PROFILE","CREATE_CONTENT","MODERATE_CONTENT","CREATE_ADS","BASIC_ADMIN"],"id":"1234"},
{"category":"Community","name":"Page ABC","access_token":"accesstoken_data2","perms":["ADMINISTER","EDIT_PROFILE","CREATE_CONTENT","MODERATE_CONTENT","CREATE_ADS","BASIC_ADMIN"],"id":"56789"}
]
,"paging":{"next":"https:\/\/graph.facebook.com\/1100234567\/accounts?access_token=pageAccesstoken&limit=5000&offset=5000&__after_id=77786543"}
}
I need to get the category,name,access_token as key and corresponding data as values in some dictionary.
How can I achieve it?
Hope this will do the required stuffs
private Dictionary<string, object> deserializeToDictionary(string jo)
{
var values = JsonConvert.DeserializeObject<Dictionary<string, object>>(jo);
var values2 = new Dictionary<string, object>();
foreach (KeyValuePair<string, object> d in values)
{
if (d.Value.GetType().FullName.Contains("Newtonsoft.Json.Linq.JObject"))
{
values2.Add(d.Key, deserializeToDictionary(d.Value.ToString()));
}
else
{
values2.Add(d.Key, d.Value);
}
}
return values2;
}
This was taken from the following link
How can I deserialize JSON to a simple Dictionary<string,string> in ASP.NET?
string json = #"{""key1"":""value1"",""key2"":""value2""}";
Dictionary<string, string> values = JsonConvert.DeserializeObject<Dictionary<string, string>
More examples: Serializing Collections with Json.NET
Hi I am passing an xml as string
<AbcDto xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Abc">
<Id>2</Id>
<Description>sample string 4</Description>
<Name>sample string 3</Name>
<PolicyId>c17f5b9f-c9bf-4a3a-b09b-f44ec84b0d00</PolicyId>
<Status>Active</Status>
<TimeZoneId>USCentral</TimeZoneId>
</AbcDto>
When I am trying creating Custom Model Binder for Web Api
public bool BindModel(System.Web.Http.Controllers.HttpActionContext actionContext, ModelBindingContext bindingContext)
{
var json = actionContext.Request.Content.ReadAsStringAsync().Result;
if (!string.IsNullOrEmpty(json))
{
var jsonObject = (JObject) Newtonsoft.Json.JsonConvert.DeserializeObject(json);
var jsonPropertyNames = jsonObject.Properties().Select(p => p.Name).ToList();
The json string passing as an parameter to the below method is an xml as string
I am facing exception at Newtonsoft.Json.JsonConvert.DeserializeObject(json);
Exception Details:
Unexpected character encountered while parsing value: <. Path '', line 0, position 0.
You are getting an error because JsonConvert.DeserializeObject() expects JSON input, not XML. If you want to handle XML with a JObject, you'll need to convert the XML to JSON first. The JsonConvert class has a SerializeXmlNode() method for this purpose.
Demo:
class Program
{
static void Main(string[] args)
{
string json = #"
<AbcDto xmlns:i=""http://www.w3.org/2001/XMLSchema-instance"" xmlns=""http://schemas.datacontract.org/2004/07/Abc"">
<Id>2</Id>
<Description>sample string 4</Description>
<Name>sample string 3</Name>
<PolicyId>c17f5b9f-c9bf-4a3a-b09b-f44ec84b0d00</PolicyId>
<Status>Active</Status>
<TimeZoneId>USCentral</TimeZoneId>
</AbcDto>";
// If the json string contains XML, convert it to JSON
if (json.TrimStart().StartsWith("<"))
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(json);
json = JsonConvert.SerializeXmlNode(doc, Formatting.None, true);
}
// Now you can load the JSON into a JObject
var jsonObject = JObject.Parse(json);
var jsonPropertyNames = jsonObject.Properties().Select(p => p.Name).ToList();
foreach (string name in jsonPropertyNames)
{
Console.WriteLine(name);
}
}
}
Output:
#xmlns:i
#xmlns
Id
Description
Name
PolicyId
Status
TimeZoneId