Printing out the first index of an array in JSON format - c#

What I am trying to do is print out the first index of an array in JSON format.
With the code:
storeInformation = myStoreInfoTable;
strResponseOutput = JsonConvert.SerializeObject(storeInformation);
These are the results:
[
{
"distance": 0,
"descr": "Toronto",
"address": "1300 Castlefield Avenue",
"city": "Toronto"
},
{
"distance": 7.1121883392,
"descr": "Etobicoke - North",
"address": "Resources Road",
"city": "Etobicoke"
}
]
What I tried to do to get the first index is:
storeInformationRow = dtbStoreInformation.Rows[0];
strResponseOutput = JsonConvert.SerializeObject(storeInformationRow);
What I get is:
{
"RowError": "",
"RowState": 2,
"Table": [
{
"distance": 0.0000000000,
"descr": "Toronto",
"address": "1300 Castlefield Avenue",
"city": "Toronto"
},
{
"distance": 7.1121883392,
"descr": "Etobicoke - North",
"address": "Resources Road",
"city": "Etobicoke"
}
]
}
The result I want is just
{
"distance": 0.0000000000,
"descr": "Toronto",
"address": "1300 Castlefield Avenue",
"city": "Toronto"
}
Help anybody?

I seems to me that the JSON serializer is goofing up because it doesn't know how to correctly serialize a DataRow. That's the only difference between the first and second snippet of code.
If you look at the MSDN documentation for the DataRow class you can see that the DataRow has the attributes displayed (RowError, RowState and Table) among many others.
To fix your problem I would suggest one of 2 options:
Create a new DataTable and add the DataRow you want to serialize to it, and call JsonConvert.SerializeObject() on that.
Map the columns (distance, descr, address & city) to another class (Store or something) and try to serialize that object. From what I read in the JsonConvert documentation it's possible (the class attributes are mapped correctly onto the JSON object).
Let me know how it goes!

you can just use :
var row = dtbStoreInformation.Rows[0];
string strResponseOutput = new {
distance = row[0].ToString(),
descr= row[1].ToString(),
address = row[2].ToString(),
city = row[2].ToString()}.ToJson();
don't forget the include of the namespace ServiceStack.Text
You can also create an anonym object
var obj = jsonString = new {
distance = row[0].ToString(),
descr= row[1].ToString(),
address = row[2].ToString(),
city = row[2].ToString()}
strResponseOutput = JsonConvert.SerializeObject(obj);

Related

How to modify the JSON obtained from serializing a DataSet using Json.Net for purposes of ESRI geocoding

How to introduce the "attributes" level into JSON text below? I'm using a C# dataset populated from SQL server with SerializeObject from Newtonsoft.json.
This is for submitting data to ESRI batch geocoder, as described here.
The format their REST service expects looks like this
{
"records": [
{
"attributes": {
"OBJECTID": 1,
"Address": "4550 Cobb Parkway North NW",
"City": "Acworth",
"Region": "GA"
}
},
{
"attributes": {
"OBJECTID": 2,
"Address": "2450 Old Milton Parkway",
"City": "Alpharetta",
"Region": "GA"
}
}
]
}
The format my C# script creates looks like this (missing the "attributes" level.)
{
"records": [
{
"OBJECTID": 1,
"address": "4550 Cobb Parkway North NW",
"city": "Acworth",
"state": "GA",
"zip": 30101.0
},
{
"OBJECTID": 2,
"address": "2450 Old Milton Parkway",
"city": "Alpharetta",
"state": "GA",
"zip": 30009.0
}
]
}
I've read thru json.net documentation and wonder if the JsonConverter class could be helpful. Candidly, I'm at loss for how to resolve this. First time user of Json.net, relative newbie with C#
Here is the C# code used to this point:
SQLStatement = "select OBJECTID, Address, City, Region, Postal from MyAddresses";
SqlDataAdapter geoA = new SqlDataAdapter(SQLStatement, GEOconn);
DataSet GeoDS = new DataSet();
geoA.Fill(GeoDS, "records");
string geoAJSON = JsonConvert.SerializeObject(GeoDS);
Console.WriteLine("{0}", geoAJSON);
You can wrap your rows in another object with an "attributes" property using Json.Net's LINQ-to-JSON API.
In your code, replace this line:
string geoAJSON = JsonConvert.SerializeObject(GeoDS);
with this:
var obj = JObject.FromObject(GeoDS);
obj["records"] = new JArray(
obj["records"].Select(jo => new JObject(new JProperty("attributes", jo)))
);
string geoAJSON = obj.ToString();
Working demo here: https://dotnetfiddle.net/nryw27
Aside: based on your JSON it looks like you are storing postal codes in your database as decimals. Don't do that. They may look like numbers, but you should store them as strings. Postal codes in the US can have leading zeros, which will get dropped when you treat them as numbers. Some international postal codes can contain letters, so a numeric type won't even work in that case.

count Jarray in C#

I need to count data from reqst body in httptrigger function.Data is coming as object type.
I am deserialisizing the reqd body as shown below.Below are the object type data i am getting in req.body.
{
"Response": [
{
"id": "1",
"name": "Warburtons Medium Sliced Soft White Bread 400g",
"description": "Warburtons Medium Sliced White 400G",
"brand": "Warburtons",
"ean": "123",
"mediaStorageKey": "b",
"maxQuantity": 6,
"price": 0.95,
"size": 400,
"sizeUnits": "Grams"
},
{
"id": "a",
"name": "Co-op Orvieto Classico 75cl",
"description": "Co-op Orvieto Classico 75CL",
"brand": "Co-op",
"ean": "489",
"mediaStorageKey": "c",
"maxQuantity": 6,
"price": 5.5,
"size": 75,
"sizeUnits": "Centilitres"
},
{
"id": "kl",
"name": "Co Op Garden Peas in Water 290g",
"description": "Co-op Garden Peas 290G",
"brand": "Co Op",
"ean": "678",
"mediaStorageKey": "f",
"maxQuantity": 6,
"price": 0.45,
"size": 175,
"sizeUnits": "Grams"
}
]
}
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
dynamic body = JsonConvert.DeserializeObject(requestBody);
dynamic data = body["Response"];
Till this i am getting data like below.
{[{"id":"1","name":"b"},{"id":"f","name":"j"}]}
But now i am not able to count these data which gives 2 in this case as i have to apply for loop. Neither Count,Count() is working here. I am getting the below error.
Newtonsoft.Json.Linq.JValue does not contain a definition for Count
create a class with these two fields id and name
public class Item {
public Int Id {get; set;}
public String Name {get; set;}
}
and specify the type for your deserialized value:
dynamic body = JsonConvert.DeserializeObject(requestBody);
var rows = JsonConvert.DeserializeObject<List<Item>>(body["Response"]);
now you can use rows.Count();
If you only need to know the amount of entries inside the Response collection then you can simply do that by making use of JObject and JArray:
string rawJson = ...;
JObject semiParsedJson = JObject.Parse(rawJson);
JArray entries = (JArray)semiParsedJson["Response"];
int count = entries.Count;

How to access inner properties of a Json Object?

I am learning C# and I am trying to parse json/xml responses and check each and every key and value pair. For xml I am converting to json so I have only one function/script to work with both cases. My issue is that I am working with a wide range of json responses which are not similar and there may be arrays in some of the json response. I have tried accessing the "Count" of the json object as a way to check for arrays.
Note: The responses will vary. This example is for Products > Product > name, quantity and category. The next response will change and can be like Country > State > Cities and so on. I cannot rely on creating classes since all responses are going to be different. Plus I am working on automating it so it should be able to handle anything thrown at it.
Sample Json I am working with:
{
"products": {
"product": [
{
"name": "Dom quixote de La Mancha",
"quantity": "12",
"category": "Book"
},
{
"name": "Hamlet",
"quantity": "3",
"category": "Book"
},
{
"name": "War and Peace",
"quantity": "7",
"category": "Book"
},
{
"name": "Moby Dick",
"quantity": "14",
"category": "Book"
},
{
"name": "Forrest Gump",
"quantity": "16",
"category": "DVD"
}
]
}
The way I am accessing the count, name and value is as follows:
dynamic dyn = JsonConvert.DeserializeObject<dynamic>(jsonText);
foreach (JProperty property in dyn.Properties())
{
string propname = property.Name;
var propvalue = property.Value;
int count = property.Count;
}
Is there a way to access these without going through the foreach loop like int count = dyn.Count ? All I am getting from this is null instead of actual values.
For the above example my end result will be like:
This responses contains products> product> 5 x (name, quantity, category)
The QuickWatch for the object:
QuickWatch for dyn object
Try to deserialize your JSON into JObject like below:
var jObject = JsonConvert.DeserializeObject<JObject>(jsonText);

C# how to insert JSON into Google BigQuery table schema

I have an array of complex JSON objects with embedded arrays of JSON objects. By way of an example, one JSON object might look like...
{
"shopID": "12194",
"name": "Shop Name",
"timeZone": "US\/Eastern",
"timeStamp": "2020-11-30T13:25:13+00:00",
"Contact": {
"contactID": "90",
"Addresses": [
"ContactAddress": {
"address1": "123 Some Street",
"address2": "",
"city": "A city",
"state": "A state",
"zip": "12345",
"country": "United States",
"countryCode": "US"
}
],
"Emails": "",
"Websites": {
"ContactWebsite": {
"url": "www.companyname.com"
}
}
},
"TaxCategory": {
"taxCategoryID": "2",
"isTaxInclusive": "false",
"tax1Name": "Tax region name",
"tax1Rate": "0.07"
}
}
I cannot modify the above format... I am calling a public API that is returning this as a response.
Assuming that the corresponding table schema has been created in Google BigQuery, how do I simply insert this JSON as a row in to the table?
My code looks like this...
bqc = BigQueryClient.Create("a-project-id");
var trShops = new TableReference()
{
ProjectId = "a-project-id",
DatasetId = "a-dataset-name",
TableId = "Shops"
};
# Call to my API data source that returns a JSON array of Shops...
content = await _lsrApiHelper.GetRawDataAsync(uri, currentOffset, _apiLimit);
# After call to API I deserialize the JSON response...
response = JsonSerializer.Deserialize<ShopResponseRoot>(content);
# Then I want loop through Shops in the List<ShopResponse> and insert them into BigQuery...
foreach (ShopResponse shop in response.Shop)
{
var newRow = new BigQueryInsertRow();
newRow.InsertId = "shopID";
newRow.Add(shop); # This is where I am struggling
bqc.InsertRow(trShops, newRow);
}
I am struggling with working out how to use a JSON or C# object to populate the data that I want inserting into BigQuery.
Any and all guidance greatly appreciated.

Linq query to Json string

starting from a JObject I can get the array that interests me:
JArray partial = (JArray)rssAlbumMetadata["tracks"]["items"];
First question: "partial" contains a lot of attributes I'm not interested on.
How can I get only what I need?
Second question: once succeeded in the first task I'll get a JArray of duplicated items. How can I get only the unique ones ?
The result should be something like
{
'composer': [
{
'id': '51523',
'name': 'Modest Mussorgsky'
},
{
'id': '228918',
'name': 'Sergey Prokofiev'
},
]
}
Let me start from something like:
[
{
"id": 32837732,
"composer": {
"id": 245,
"name": "George Gershwin"
},
"title": "Of Thee I Sing: Overture (radio version)"
},
{
"id": 32837735,
"composer": {
"id": 245,
"name": "George Gershwin"
},
"title": "Concerto in F : I. Allegro"
},
{
"id": 32837739,
"composer": {
"id": 245,
"name": "George Gershwin"
},
"title": "Concerto in F : II. Adagio"
}
]
First question:
How can I get only what I need?
There is no magic, you need to read the whole JSON string and then query the object to find what you are looking for. It is not possible to read part of the JSON if that is what you need. You have not provided an example of what the data looks like so not possible to specify how to query.
Second question which I guess is: How to de-duplicate contents of an array of object?
Again, I do not have full view of your objects but this example should be able to show you - using Linq as you requested:
var items = new []{new {id=1, name="ali"}, new {id=2, name="ostad"}, new {id=1, name="ali"}};
var dedup = items.GroupBy(x=> x.id).Select(y => y.First()).ToList();
Console.WriteLine(dedup);

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