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how to put anonymous json as class member and convert all to json in c#

I'm having a well-defined class for sending as JSON body in an HTTP request.
public class EventData
{
public string deviceJobId { get; set; }
public int eventID { get; set; }
public long time_ms { get; set; }
/// similar fields
}
Now I have to add one more field called HealthInfo. The value of this new HealthInfo is a nested JSON read from some file.
The fields of this JSON file change from time to time, and there is no guarantee that some fields will always be present.
I don't want to read/modify any value of that and just need to publish this EventData as a json as part of an HTTP request.
Then how to add HealthInfo correctly?
I tried to put HealthInfo as string and object is getting double serialized.

you have to convert to JObject before you add new json string
JObject jo = JObject.FromObject(eventData);
jo["HealthInfo"] = jsonStringHealthInfo;
//or it could be (your question needs some details)
jo["HealthInfo"]=JObject.Parse(jsonStringHealthInfo);
StringContent content = new StringContent(jo.ToString(), Encoding.UTF8, "application/json");
var response = await client.PostAsync(api, content))

If you know all of the possible properties inside HealthInfo then you can create new class HealthInfo with nullable properties.
public class HealthInfo
{
public string? SomeData { get; set; }
public int? SomeOtherData { get; set; }
}
and then add nullable HealthInfo in your main class:
public class EventData
{
public string deviceJobId { get; set; }
public int eventID { get; set; }
public long time_ms { get; set; }
public HealthInfo? HealthInfo { get; set; }
/// similar fields
}
However if you're not sure what kind of data you're gonna get and want to avoid double serialization, just pass HealthInfo as object:
public class EventData
{
public string deviceJobId { get; set; }
public int eventID { get; set; }
public long time_ms { get; set; }
public object? HealthInfo { get; set; }
/// similar fields
}

You can use of C# reflection. (TypeBuilder.DefineProperty Method)
In fact you must add prop to the class in run time.
see full information at
https://learn.microsoft.com/

C# JObject Unexpected token when deserializing multidimensional array

I am using JObject to read various api responses. With the following json
{"API":{"Year":["2020","2019","2018","2017","2016","2015"],
"Status": {"Message":"The call returned successfully with years"}}}
I can use this:
dynamic json= JObject.Parse(s);
string[] yrs = json.API.Year.ToObject<string[]>();
where s is the json object.
This works perfectly to give me a simple array of years.
I am having difficulty parsing multi dimensions in the json response. when i have the following:
{"API":{"Category":[
{"GroupName":"Exterior Accessories","GroupID":"2",
"Items":
[{"Id":"64","Value":"Body Part"},
{"Id":"20","Value":"Body Styling"},
{"Id":"7","Value":"Bras and Hood Protectors"}]
},
{"GroupName":"Interior Accessories","GroupID":"4",
"Items":
[{"Id":"21","Value":"Carpet",
{"Id":"2","Value":"Doors and Components"},
{"Id":"8","Value":"Floor Protection"}]
},
],
"Status": {"Message":"The call (api.v12.estore.catalograck.com) returned successfully with categories.","DataFound":true,"TimeStamp":"02/02/2020 11:48:27","InternalError":false}}}
How can I parse this into a multi-dimensional array?

Since Years you used was a simple built in element (string), you dont need to create any classes.. but the Categories you have in your JSON is a object. To access the Categories in a way you can access its elements, I would recommend creating the necessary classes and then using the Category list of the root object to do what you need.
Example code
public class Item
{
public string Id { get; set; }
public string Value { get; set; }
}
public class Category
{
public string GroupName { get; set; }
public string GroupID { get; set; }
public List<Item> Items { get; set; }
}
public class Status
{
public string Message { get; set; }
public bool DataFound { get; set; }
public string TimeStamp { get; set; }
public bool InternalError { get; set; }
}
public class API
{
public List<Category> Category { get; set; }
public Status Status { get; set; }
}
public class RootObject
{
public API API { get; set; }
}
Above are the needed classes for succesful deserialization where RootObject class is the parent.
Use the following in your Main method.,
RootObject root = JsonConvert.DeserializeObject<RootObject>(json);
List<Category> categories = root.API.Category;

Convert JSON string to object C#

I have JSON string results as follows.
In this response Sometimes sizeKey and sizeName properties are returned as a string. But sometimes both properties are returns inside an array as follows
I am using following code to convert it to object
var assets = jObject["assets"].Children().ToList();
foreach (var item in assets)
{
decorationAssets.Add(item.ToObject<AEDecorationAssets>());
}
And my AEDecorationAssets class is as follows.
public class AEDecorationAssets
{
public string Id { get; set; }
public string Url { get; set; }
public string[] Colors { get; set; }
public string FontKey { get; set; }
public string SizeKey { get; set; }
public string ViewKey { get; set; }
public string FontName { get; set; }
public int Rotation { get; set; }
public string SizeName { get; set; }
public string TextValue { get; set; }
public string EntityType { get; set; }
public string LocationCode { get; set; }
public string LocationName { get; set; }
public string TextEffectKey { get; set; }
public string TextEffectName { get; set; }
public string DecorationMethod { get; set; }
public string NumDecorationColors { get; set; }
}
At the time when "sizeKey" is an array, the above code gives an error. How can I resolve this issue? Is there any JSON property we can use to resolve it?

One way you can do it is by making your SizeKey type an object (i.e. public object SizeKey { get; set; }), then you can switch/case on item.ToObject<AEDecorationAssets>().SizeKey.GetType() to figure out how to handle it (i.e. if String do this, if JArray do that), etc.

If a JSON type is sometime an array, and sometimes a string, you can't really map it simply to a .NET type, as there is none that supports this behavior.
So first you need a datatype that can store this, like and string[] or List<string>.
It could be that JsonConvert will solve this automatically, but otherwise you'll need to write a custom ContractResolver or JsonConverter. Here you can detect if the source property is a string or array. If it's an array, you can use the default deserialization. If it is a string, you need to convert it to an array with a single value.

Simply get json result for which you want to create c# object and then you can valid json response from https://jsonlint.com/ and then you can create c# object of any type json response which you want through http://json2csharp.com. And after get c# object of your json response you only need to deserialization of your json response to c# object which you have created. which will return you expected result.

Consume Data From this endpoint

I am getting tdata from a certain endpoint and the problem id on serialization to my classes. I want to cast the bellow data to my class but cant get how the class should be structured. Check out the data .....
{
"-LYG_AI_oGYjNBrzMlKF": {
"chatDispayText": "",
"chatId": "-LYG_AI_oGYjNBrzMlKF",
"chatName": "",
"chattype": "single",
"imageUrl": "https://wallpaper.wiki/wp-content/uploads/2017/04/wallpaper.wiki-Amazing-celebrities-hd-wallpaper-PIC-WPD004734.jpg",
"lastMessageSent": "aiye",
"lastMessageSentTime": 1549704416263,
"synched": false,
"users": {
"-LYG_AIZ5MvTbjR7DACe": "Uicpm3L15TX0c15pKCI6KUEARyB3",
"-LYG_AI_oGYjNBrzMlKE": "Xsr0z9lsqNOEytX61lJvaGz1A8F2"
}
}
}

If the data you get out the endpoint has a dynamic structure, you can make use of a key-vale pair collection or a dictionary. For instance:
JObject jObject = JObject.Parse(Data); // This would already give you a key-value pair collection
Dictionary<String,Object> collection = new Dictionary<String, Object>();
foreach(var obj in jObject){
collection.Add(obj.Key, obj.Value);
}
However, this isn't a strongly typed approach which means that it is not effective in the majority of scenarios. A better solution when dealing with endpoints would be to define a class with fixed schema, actually something you need in your code, and then map the class to the object yielded by the endpoint using a metadata struct. For example:
public class ChatInfoModel
{
[JsonProperty(Metadata.ChatId)]
public long ChatId { get; set; }
[JsonProperty(Metadata.ChatId, Required = Required.AllowNull)]
public String Message { get; set; }
}
public struct Metadata
{
public const String ChatId = "userChatId";
public const String Message = "messageTxt";
}
And then
var deserializedObject = JsonConvert.DeserializeObject<ChatInfoModel>(data);
However, if your class has the exact same naming convention (but should not necessarily follow the camelCase naming convention) for its properties as in the serialized data, the JsonProperty attribute would not be needed.
You can also deserialize the object without using JsonProperty attribute manually using the first approach, and it is actually advantageous in certain scenarios where your schema comes from a configuration file rather than a struct.

Take inspiration from the Structure below:
public class Rootobject
{
public LYG_AI_Ogyjnbrzmlkf LYG_AI_oGYjNBrzMlKF { get; set; }
}
public class LYG_AI_Ogyjnbrzmlkf
{
public string chatDispayText { get; set; }
public string chatId { get; set; }
public string chatName { get; set; }
public string chattype { get; set; }
public string imageUrl { get; set; }
public string lastMessageSent { get; set; }
public long lastMessageSentTime { get; set; }
public bool synched { get; set; }
public Users users { get; set; }
}
public class Users
{
public string LYG_AIZ5MvTbjR7DACe { get; set; }
public string LYG_AI_oGYjNBrzMlKE { get; set; }
}

JSON.Net Deserialization of non-generic Root Objects

I'm currently working on a project where I make a request to the Riot Games API, parse the JSON, and do some stuff with it. I have the request working, and I know I'm getting valid JSON. My issue is using JSON.Net to deserialize the JSON.
The JSON is of the following structure:
{
"xarcies": {
"id": 31933985,
"name": "Farces",
"profileIconId": 588,
"revisionDate": 1450249383000,
"summonerLevel": 30
}
}
I want to load this data into the following class
[JsonObject(MemberSerialization.OptIn)]
class Summoner
{
[JsonProperty("id")]
public long id {get;set;}
[JsonProperty("name")]
public string name { get; set; }
[JsonProperty("profileIconId")]
public int profileIconId { get; set; }
[JsonProperty("revisionDate")]
public long revisionDate { get; set; }
[JsonProperty("summonerLevel")]
public long summonerLevel { get; set; }
}
The issue I'm having is that because I'm given a "xarcies" object that contains the information I need, I'm not sure how to go about designing a class that can accept the JSON data. I've seen some examples that use a RootObject class to take the object and that class has a subclass that all the pairs are put into, but I can't seem to get it to work. Every time I run it the attributes for the object end up being NULL.

You can deserialize your JSON as a Dictionary<string, Summoner>:
var root = JsonConvert.DeserializeObject<Dictionary<string, Summoner>>(jsonString);
The dictionary will be keyed by the user name, in this case "xarcies". See Deserialize a Dictionary.

I just used json2csharp to create the following class (its types look a bit different then yours):
public class UserData
{
public int id { get; set; }
public string name { get; set; }
public int profileIconId { get; set; }
public long revisionDate { get; set; }
public int summonerLevel { get; set; }
}
public class RootObject
{
public KeyValuePair<string, UserData> value { get; set; }
}