I am developing facebook app in which i am fetching user's friend detail in as
dynamic result = client.Get("me/friends"); //it gives friend's data for id, name
it gives data in
{
"data": [
{
"name": "Steven",
"id": "57564897"
},
{
"name": "Andy",
"id": "8487581"
}
}
Now i would like to parse this data and store it. so that i can use it my way.
I was trying to parse it using JSON.NET and show the data in view as
var model = JsonConvert.DeserializeObject<FriendDetail>(result.data);
in the class :
public class FriendDetail
{
public string id { get; set; }
public string name { get; set; }
public FriendDetail(string i, string n)
{
id = i;
name = n;
}
}
Now so that i can pass the view as "return View(model)"
But its giving me error: The best overloaded method match for 'Newtonsoft.Json.JsonConvert.DeserializeObject<FBApp.Models.FBFriendDetail>(string)' has some invalid arguments
Why this error is occurring ?
Please help me to parse this json data.
Also is there any better way to parse and Store json data and also then show in view ?
Please help
You are trying to deserialize a list of FriendDetail objects into a single FriendDetail object. Try the following:
var jObject = JObject.Parse(result.ToString());
var model = JsonConvert.DeserializeObject<List<FriendDetail>>(jObject["data"].ToString());
EDIT
This is how I tested it:
var result =
#"{
""data"": [
{
""name"": ""Steven"",
""id"": ""57564897""
},
{
""name"": ""Andy"",
""id"": ""8487581""
}]
}";
var jObject = JObject.Parse(result.ToString());
var model = JsonConvert.DeserializeObject<List<FriendDetail>>(jObject["data"].ToString());
Related
I have a json file and I deserialised it as shown in the code below. Some context, dex is a robot and it has information such as battery and so on as shown in the json file below. I want to read the battery status for the robot that the user selected ( robot).
This is my code, currently im only accessing data.dex but i want to change it to whichever data.robot, where robot is a variable
var data = JsonConvert.DeserializeObject<Root>(json);
var robot = queryDetails2.Amr;
var text =$"";
if (data.dex.battery.status == "good")
{
text = $"{queryDetails2.Amr}'s battery is in good condition. ";
}
This is the json file:
{
"dex":
{
"current_job":
{"job":null, "task": null, "location": null},
"battery":
{"name":"battery", "status": "good", "value": "100"},
},
"dex_1":
{
"current_job":
{"job":null, "task": null, "location": null},
"battery":
{"name":"battery", "status": "good", "value": "100"},
},
"dex_2":
{
"current_job":
{"job":null, "task": null, "location": null},
"battery":
{"name":"battery", "status": "good", "value": "100"},
}
}
I wanted to use the GetMethod or the solution as suggested in this question (https://stackoverflow.com/questions/53076743/how-to-access-variable-of-a-nested-functions-in-python[1]).
However, im getting errors like it does not have a method. Now im confused, was it because i used var? but the deserialised method converts the json to an object though..
Anyway, how should i approach this?
Assuming that you have 3 robots with different names: dex, dex_1 and dex_2, you should reorganize your solution to treat the json data as a list of Robots instead of 3 separate variables for each robot.
To do this, first your json should look like this:
{
"robots":[
{
"name":"dex",
"current_job":{
"job":null,
"task":null,
"location":null
},
"battery":{
"name":"battery",
"status":"good",
"value":"100"
}
},
{
"name":"dex_1",
"current_job":{
"job":null,
"task":null,
"location":null
},
"battery":{
"name":"battery",
"status":"good",
"value":"100"
}
},
{
"name":"dex_2",
"current_job":{
"job":null,
"task":null,
"location":null
},
"battery":{
"name":"battery",
"status":"good",
"value":"100"
}
}]
}
Next, update your serialization classes. Add a field called name in the Robot class or whatever class type you currently have for data.dex. In Root, remove the "dex" fields and add a List<Robot>.
public class Root
{
public List<Robot> robots { get; set; }
}
public class Robot
{
public string name { get; set; }
public Job current_job { get; set;}
public Battery battery{ get; set; }
}
Now you can write whatever logic to get the right robot data. Here is an example using System.Linq:
var robotName = "dex_2";
var robotInfo = data.robots.First(x => x.name.Equals(robotName));
var text = $"{robotName}'s battery is in {robotInfo.battery.status} condition.";
I have a Json and I want to get it in my c# object.
var json = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
_ = JsonConvert.DeserializeObject<object>(json);
Here, I get the Json in the format of:
{{
"pipeline" : {
"url" : "url1",
"idP" : 1
},
"id": 1234,
"name" : "test1",
"state" : "inprogress",
"date" : "date"
}}
Now, from this JSON, I just want the id and idP.
How can I do that? Should I create a class with all the properties?
Can I please get a sample code?
If you just want id and idP, you don't need to create the classes and deserialize json. You can just parse it
var jsonParsed = JObject.Parse(json);
var id = (Int32)jsonParsed["id"]; //1234
var idP = (Int32) jsonParsed["pipeline"]["idP"]; //1
but you have to fix your json, by removing extra pair {}. You can make it manually if it is a typo. But if it is a bug, you can use this code, before parsing
json=json.Substring(1,json.Length-2);
or for example you can create one class
public class Pipeline
{
public string url { get; set; }
public int idP { get; set; }
}
and deserialize only one part of json
Pipeline pipeline = jsonParsed["pipeline"].ToObject<Pipeline>();
Im writing an API automation test with RestSharp.Any kind of help will be greatly appreciated!
I'm getting data values from the response & I need to write few values to my json file (which I will use for another test putting them as a body).
I managed to get 1 value from JArray but I need 2 more values and I cant wrap my head around how to do that.
Im attaching my api test code & the data I get from the response + the data I managed to write into my json file.
The value that I managed to get: FsNumber (declared it as financialNumber). What I need to add to the json: subjectName + subjectCode (they will be declared as companyName/companyCode). How do I access "Query" list with SubjectName/SubjectCode?
TEST
var queryResult = client.Execute<object>(request);
var data = JsonConvert.SerializeObject(queryResult.Data);
var jsonParse = JToken.Parse(data);
var fsObject = jsonParse.Value<JToken>("FinanceReportList");
var fsArray = fsObject.Value<JArray>("List");
foreach (var fs in fsArray)
{
var cfn = fs.Value<string>("FsNumber");
var queryObject = new DataQuery
{
financialNumber = cfn,
};
var queryObjectString = JsonConvert.SerializeObject(queryObject);
File.WriteAllText(#"C:\Users\TestAPI\myJsonWithValues.json", queryObjectString);
}
Data I get from the response:
{
"RequestDate": "2021-07-16",
"Message": "Active",
"ProductNumber": 666,
"Language": "EN",
"RequestId": "reqID666",
"Query": {
"SubjectCode": "MY-SUBJECT",
"SubjectName": "MY-NAME"
},
"FinanceReportList": {
"List": [
{
"FsNumber": "MY-NUMBER",
"Year": 2021,
So far I managed to get FsNumber to my myJsonWithValues.json file as this:
{"financialNumber":"MY-NUMBER","companyName":null,"companyCode":null}
What Im trying to do is, my json should look like
{"financialNumber":"MY-NUMBER","companyName":MY-NAME,"companyCode":MY-CODE}
You have to access "Query" object
var fsQuery = jsonParse.Value<JToken>("Query")
and use Children() method to access properties of "Query"
var children = fsQuery.Children();
It is a good practice to implement a class that encapsulates your resonse and deserialize it with JsonConvert.Deserialize eg.
public class Account
{
public string Email { get; set; }
public bool Active { get; set; }
public DateTime CreatedDate { get; set; }
public IList<string> Roles { get; set; }
}
Account account = JsonConvert.DeserializeObject<Account>(json);
Instead of using JObjects
Right now I have the following code to query my CosmosDB:
var streamIterator = containerLogs.GetItemQueryStreamIterator("SELECT * FROM mycontainer");
while (streamIterator.HasMoreResults)
{
var results = await streamIterator.ReadNextAsync();
var stream = results.Content;
using var reader = new StreamReader(stream);
string data = await reader.ReadToEndAsync();
// typeof what..?
//var dbDocuments = JsonConvert.DeserializeObject<???>(data);
}
The variable data will contain the following JSON:
{
"_rid": "wDhMAJ9xYHE=",
"Documents": [{
"id": "c05c4eee-32d4-458a-8ae8-d22dd0f93839",
"CustomProperty1": "Value 1",
"CustomProperty2": "Value 2",
"_rid": "wDhMAJ9xYHECAAAAAAAAAA==",
"_self": "dbs\/wDhMAA==\/colls\/wDhMAJ9xYHE=\/docs\/wDhMAJ9xYHECAAAAAAAAAA==\/",
"_etag": "\"00000000-0000-0000-7167-28c107aa01d6\"",
"_attachments": "attachments\/",
"_ts": 1597319093
}],
"_count": 1
}
The Documents part is my actual "domain" model. How can I easily map this back to a list of my domain model class? I used the same class to write to CosmosDB.
The model looks like this
public class MyModel
{
[JsonProperty(PropertyName = "id")]
public Guid Id {get;set;}
public string CustomProperty1 {get;set;}
public string CustomProperty1 {get;set;}
}
So how can I query my CosmosDB so that it returns a list of this class?
Here are some samples that I found helpful. The simpler case is to used the typed GetItemQueryIterator<MyModel>, but there is also a stream deserialization example.
{
"_id": "underscore",
"_rev": "136-824a0ef7436f808755f0712c3acc825f",
"name": "underscore",
"description": "JavaScript's functional programming helper library.",
"dist-tags": {},
"versions": {
"1.0.3": {
"name": "xxx",
"description": "xxx"
},
"1.0.4": {},
"1.1.0": {}
}
}
I would like to retrieve the latest version(1.1.0) from the json file. However, it always gives out me errors of "can not deserialize json object into type RootObject
Here is my class
public class versions
{
public string name { get; set; }
public string description { get; set; }
}
public class RootObject
{
public List<versions> vs { get; set; }
}
And here is where I used it
RootObject[] dataset = JsonConvert.DeserializeObject<RootObject[]>(json);
Any idea. Many thankx
Update:
I have updated the JSON file format, but some problem..
I think the problem is, that in JSON you have to quote all "field"/attribute names. (Thats a difference from standard Javascript-Notation, where you can have unquoted attributes).
So, your file should be like:
{
"_id" : "underscore",
"versions": {
"1.0.3" : {
"name": "xxx",
"description": "xxx"
}
}
Note that {1.0.3: { name: "xxx" } } wouldn't be valid JavaScript either since '1.0.3' is an invalid identifier in JavaScript.
Looking at the JSON in your updated answer:
{
"_id" : "underscore",
"versions": {
"1.0.3" : {
"name": "xxx",
"description": "xxx"
},
"1.0.4" : {
"name": "xxx",
"description": "xxx"
}
}
This is still Invalid JSON - you have 4 opening { and only 3 closing }
you should use http://jsonlint.com/ - to validate your JSON and ensure it is Valid
I've fixed your json in question. Now for your real question
I would like to retrieve the latest version(1.1.0) from the json file. However, it always gives out me errors of "can not deserialize json object into type RootObject
You have property names like 1.0.3 that are unknown at compile time. So you can not deserialize them to a concrete class. You should handle them dynamically.
Try this:
var versions = JObject.Parse(json)["versions"]
.Children()
.Cast<JProperty>()
.ToDictionary(c => c.Name, c => c.Value.ToObject<versions>());