Develop Reference

How to get the result which has NOT the property with jPath in the newtonsoft?

I want to get the result without some property, can somebody know how to work on json.net?
There is an example on the jPath "hello word" document in Goessner articles,
{
"store": {
"book": [
{ "category": "reference",
"author": "Nigel Rees",
"title": "Sayings of the Century",
"price": 8.95
},
{ "category": "fiction",
"author": "Evelyn Waugh",
"title": "Sword of Honour",
"price": 12.99
},
{ "category": "fiction",
"author": "Herman Melville",
"title": "Moby Dick",
"isbn": "0-553-21311-3",
"price": 8.99
},
{ "category": "fiction",
"author": "J. R. R. Tolkien",
"title": "The Lord of the Rings",
"isbn": "0-395-19395-8",
"price": 22.99
}
],
"bicycle": {
"color": "red",
"price": 19.95
}
}
}
If I want to filter all books with isbn number, I can use jToken.SelectTokens("$..book[?(#.isbn)]"), however, if I want to filter all books without isbn number, how can I filter them and whether json.net has this feature.

Edit:
Sorry, this only works if the key is present with null, not if it's absent. Got mixed up.
For now, you can use $..book[?(#.isbn==null)].
The reason this works is related to another question I answered recently: https://stackoverflow.com/a/69069335/878701

JSON.net - deserialize varying objects into one object

Sorry for the messy title, I'm not sure how I should explain it better.
The JSON string I have:
{
"Name that varies here": {
"id": 01,
"ArrayOfType": [{
"name": "a name",
"id": 01
},
{
"name": "a name",
"id": 02
}]
},
"Another name": {
"id": 02,
"ArrayOfSameType": [{
"name": "a name",
"id": 03
},
....
I dont know how I should deserialize it, especially because the Object-name varies. Basically what I'd want is a List where someObject has String name, int ID and a List.
How should I create the object and deserialize it? So far I have only deserialized arrays/objects that are all called the same. I could make a class for each name (Name that varies here.cs, Another name.cs) with the variables and then deserialize it into that class.

How to generate MSSQL Hierarchy ID for each element for a tree object

I've a requirement like dragable tree in my project.
I've successfully converted mssql resultset to json.
But the end user is again dragging and dropping and totally changed the tree structure.
Now I have the below json from the client.
[
{
"id": 1,
"title": "1. dragon-breath",
"items": [
{
"id": 10,
"title": "1. dragon-breath.1",
"items": [
{
"id": 100,
"title": "1. dragon-breath.1.2",
"items": [
{
"id": 1000,
"title": "1. dragon-breath.1.2.3",
"items": [],
"pos": 3
}
],
"pos": 2
},
{
"id": 101,
"title": "1. dragon-breath.1.2",
"items": [],
"pos": 2
}
],
"pos": 1
}
],
"pos": 1
},
{
"id": 102,
"title": "1. dragon-breath.1.2",
"items": [
{
"id": 1020,
"title": "1. dragon-breath.1.2.1",
"items": [],
"pos": 1
}
],
"pos": 2
},
{
"id": 1021,
"title": "1. dragon-breath.1.2.1",
"items": [],
"pos": 1
}
]
From the above json "pos" property is for MSSQL Hierarchyid value.
I am trying to regenerate the hierarchy id of each element, when this json posted back from the client.
I am requesting you people to help me. (spend 2 days no luck)

Following the link you posted to the other SO question, and then a link from a comment, I see you are using the MSSQL hierarchyid data type (hint: it might have helped if you been a bit clearer about that in your question ;)
From the online help I see there is a Parse function, which takes a string.
So you need to traverse your JSON tree structure, building strings for each element in the form /1/1/3/ for example, and pass those back to your database along with the associated node id.

Convert json string to value

I have two json string and also posted here. First json string convert from c# data table using newtonsoft dll. The second one is manual string. If i use the second string means chart displayed well. First one means chart not displayed. I just found the error "value" and "y" like a string in first json string. Kindly help me to change the first one to second one.
1)
[
{
"name": "CHE-CORPORATE",
"value": "42",
"y": "11.8"
},
{
"name": "CHE-TELUGU",
"value": "123",
"y": "10.8"
},
{
"name": "CHE-MALAYALAM",
"value": "13",
"y": "23.8"
}
]
2)
[
{ "name": "CHE-TELUGU",
"value": 123,
"y": 10.8
},
{
"name": "CHE-CORPORATE",
"value": 45,
"y": 40.8
},
{
"name": "CHE-MALAYALAM",
"value": 155,
"y": 12.8
}
]

Just convert the string to number
$.each(data,function(key,val){
val.value=+val.value; // convert the string to number
val.y=+val.y;
});
console.log(data);
Demo

Get JSON object node

I have a json object and I want to get the value of :
entities > media > sizes > large > h
Is there a way to get it like XML -> Xpath method?
This is extra lines that is irrelevant to question just because of ...
{
"created_at": "Sun, 01 Jan 2012 17:05:32 +0000",
"entities": {
"user_mentions": [
{
"screen_name": "nurdanterbiyik",
"name": "nurdan",
"id": 264782080,
"id_str": "264782080",
"indices": [
0,
15
]
}
],
"media": [
{
"id": 153522253777219584,
"id_str": "153522253777219584",
"indices": [
44,
64
],
"media_url": "http://p.twimg.com/AiFrrSmCMAAdEID.jpg",
"media_url_https": "https://p.twimg.com/AiFrrSmCMAAdEID.jpg",
"url": "http://t.co/ZwHN9gvO",
"display_url": "pic.twitter.com/ZwHN9gvO",
"expanded_url": "http://twitter.com/emelkiraac/status/153522253773025280/photo/1",
"type": "photo",
"sizes": {
"large": {
"w": 536,
"h": 800,
"resize": "fit"
},

Using JSON.NET you have several ways to read data without having to deserialize your JSON text into objects. Here is a simplified example:
string json = #" {
""created_at"": ""Sun, 01 Jan 2012 17:05:32 +0000"",
""entities"": {
""media"": [{
""type"": ""photo"",
""sizes"": {
""large"": {
""w"": 536,
""h"": 800,
""resize"": ""fit""
}
}
}]
}
}
";
JObject o = JObject.Parse(json);
int h = (int)o["entities"]["media"][0]["sizes"]["large"]["h"];
int h2 = (int)o.SelectToken("entities.media[0].sizes.large.h");

I prefer to think of JSON purely as serialized objects--the first and last thing I want to do with it is to de-serialize it into the objects that I then work with.
I can't tell you the best way to do it in c#, but I've had good luck using JSON.NET
JSON.NET will also let you (quote from website) "LINQ to JSON is good for situations where you are only interested in getting values from JSON, you don't have a class to serialize or deserialize to, or the JSON is radically different from your class and you need to manually read and write from your objects. LINQ to JSON allows you to easily read, create and modify JSON in .NET.", which sounds like what you are trying to do. I've never tried it, but if all you're trying to do is get one piece of data out of that long string, then it sounds like a good alternative.