This question already has answers here:
Error reading JObject from JsonReader. Current JsonReader item is not an object: StartArray. Path
(5 answers)
Closed 7 months ago.
When I go to online viewers, this shows as legal JSON,
stringstuff = "[
{
"data": {
"user": {
"email": "john#doe.com",
"external-id": "47b4-af36-e9fddecdb755"
},
"session-token": "BNIYdxZZew5KWnKHNZMjn8J3Q-Ii2q7Ifcs5klkginluGHhEalz-uA+C"
},
"context": "/sessions"
}
]";
but fails when I try
var jtoken = JObject.Parse(stringStuff)
with Exception:
Newtonsoft.Json.JsonReaderException: Error reading JObject from JsonReader. Current JsonReader item is not an object: StartArray. Path '', line 1, position 1.
at Newtonsoft.Json.Linq.JObject.Load(JsonReader reader, JsonLoadSettings settings)
at Newtonsoft.Json.Linq.JObject.Parse(String json, JsonLoadSettings settings)
at Newtonsoft.Json.Linq.JObject.Parse(String json)
at TastyWorksAPI.URLGetRestValues.<Authorize>d__2.MoveNext() in C:\Users\synct\OneDrive\Documents\Projects\API\API.cs:line 61
Your json string contains a json array, but you are trying to parse it as object, use JToken.Parse or JArray.Parse:
var jtoken = JArray.Parse(stringStuff);
Related
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JSON.NET JObject - how do I get value from this nested JSON structure
(1 answer)
JSon.NET deserialising subitems
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Json.NET get nested jToken value
(1 answer)
How to get a string value from a JToken
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Closed 1 year ago.
i have a json in below format
{{
"encoding_version": 1,
"root": {
"_type": "dictionary",
"test1": 0,
"test2": 6593,
"test3": ".key.test",
"test4": "key.test",
"test5": ".key.14",
"test6": 6159
}
}}
i am trying to get "test5" value which is 14
var data = (JObject)JsonConvert.DeserializeObject(inputJson);
var id = data["test5"];
however getting it null,Please help.
You have provide JSON with two times curl braces, i have made this small correction in your input JSON :
{
"encoding_version": 1,
"root": {
"_type": "dictionary",
"test1": 0,
"test2": 6593,
"test3": ".key.test",
"test4": "key.test",
"test5": ".key.14",
"test6": 6159
}
}
As your deserialization is correct and you are looking for value of "test5" which is ".key.14". Your desired key is two level down in JSON i.e. first go for "root" and then "test5". Hence your code will look like:
string test5Value = (string)result["root"]["test5"];
output => .key.14
If you want 14 then you might need to split output string and take out the required value.
This question already has answers here:
How can I deserialize JSON to a simple Dictionary<string,string> in ASP.NET?
(22 answers)
Closed 3 years ago.
I have a JSON similar to the following:
{
"type": "FeatureCollection",
"totalFeatures": "unknown",
"features": [
{
"type": "Feature",
"id": "xxx",
"geometry": {
"type": "MultiPolygon",
"coordinates": [
[
570389.865,
4722149.567
],
[
570389.865,
4722149.567
]
]
}
}
]
}
Is there a way to get the coordinates property of the first feature without using substring or parsing it to an class that represents that JSON?
I'm looking for something standard for handling JSON strings as an Object, with methods for getting childs by name or similar.
Any help would be appreciated
You can use Newtonsoft.Json library.
Here's example of getting coordinates field (using JSONPath):
var parsed = JObject.Parse(yourJson);
// returns JToken (but actually it's JArray, derived from JToken)
var coordArrayToken = parsed.SelectToken("$.features[0].geometry.coordinates");
var coordinates = coordArrayToken.ToObject<decimal[][]>();
Of course you can use simple indexers:
var parsed = JObject.Parse(yourJson);
// returns JToken (but actually it's JArray, derived from JToken)
var coordArrayToken = parsed["features"].Children().First()["geometry"]["coordinates"];
var coordinates = coordArrayToken.ToObject<decimal[][]>();
This question already has answers here:
Deserializing JSON Object Array with Json.net
(6 answers)
Deserialize JSON with C#
(10 answers)
Closed 6 years ago.
i have a json object that has a json array that i would love to deserialize
{
"status": 1,
"loans": [
{
"loan_id": "686",
"client_id": "269",
"client_name": "Byaruhanga Guard",
"total_amount": "10000",
"min_amount": "10000",
"start_date": "2016-07-28 13:12:30",
"duration": "2",
"payment_interval": "day",
"voucher": "92",
"description": "FUEL",
"when_added": "2016-07-28 13:12:30",
"approval_status": "approved",
"total_paid": null,
"next_payment_date": "2016-07-29 10:12:30"
}
]
}
please help.
use Newtonsoft.Json from NuGet package
var results= JsonConvert.DeserializeObject<string[]>(jsondata);
var loanjson=results["loans"];
var loandata= JsonConvert.DeserializeObject<string[]>(loanjson);
This question already has answers here:
object to deserialize has a C# keyword
(4 answers)
Closed 7 years ago.
I will try to parse the string of JSON but there is a problem to parse 'long' character in JSON string.
JSON code is below
{ "valid": 1, "delta": 0, "time": 23755, "date": 200815, "fix": 2, "status": 1, "sats": 12, "lat": 37529922, "long": 126898053, "speed": 874, "heading": 0, "alt": 171300 }
I want to get lat and long value but I can't get value because Long character is keyword
My code is below
using (WebClient wc = new WebClient())
{
string json = wc.DownloadString(sb.ToString());
dynamic temp = JsonConvert.DeserializeObject(json);
Gps = new GpsInfo();
Gps.latY = temp.lat;
Gps.lonX = temp.long; //Error long type is keyword
SettingGpsChart(Gps);
}
How can I parse json value long and lat?
Use # symbol:
Gps.lonX = temp.#long;
And cast to your type:
Gps.lonX = (long)temp.#long;
I am using Json.NET 6.x and I noticed weird behaviour:
If I want to deserialize this simple JSON, I get an error:
The code to deserialize:
object o = Newtonsoft.Json.JsonConvert.DeserializeObject(text);
and the JSON:
[
{
"Username": "tb386",
"TimestampUpdated": "2015-01-19T18:49:52.771571+01:00",
"AuthTokens": [
"Ua7JR5E7hSAxjafp6dpMrvw3HlICW3ZZdDuArMaU5ks="
]
}
]
The error I get is:
Unexpected character encountered while parsing value: U. Path '', line 0, position 0.
If I remove the array, it works fine. But all I have to do, is to remove the string inside the array, making it empty:
[
{
"Username": "tb386",
"TimestampUpdated": "2015-01-19T18:49:52.771571+01:00",
"AuthTokens": [ ]
}
]
and then it works fine. I should also note that the serialized JSON was produced by the Newtonsoft library, so the source is the same library!
If I try a validator (like http://jsonlint.com/) on the JSON with the array, it valides OK!
Can anyone help me out here?
Additional information: Even if I add a string inside VS and write the JSON hardcoded, it fails!
string text = "[ {\"Username\": \"tb386\",\"TimestampUpdated\": \"2015-01-19T18:49:52.771571+01:00\",\"AuthTokens\": [\"Ua7JR5E7hSAxjafp6dpMrvw3HlICW3ZZdDuArMaU5ks=\"] } ]";
object o = Newtonsoft.Json.JsonConvert.DeserializeObject(text);
Version info on Newtonsoft dll: