i have this API that i want to creat a dynamic object. My point here is to have normal object to deal with rather than what this API returns to me, i can't controll this API so the retrived data can't be modified, this is the body, and it represnet a view in Database
Also i think reflection could help me in this case, any idea....
Request Body:
{
"ViewName": "Person",
"ViewOutput": "Name, Email, Number",
"ViewFilter": [
{
"filterKey": "Number",
"filterValue": "532000000"
}
]
}
I want the ViewName + ViewOutput+ ViewFilter to be paramterized,
ViewName it will take single value,
ViewOutput will be array of string
ViewFilter will be list of filteration ("FilterKey", "FilterVlaue") because it could be mutliple filteration value like this:
"ViewFilter": [
{
"filterKey": "Number",
"filterValue": "532000000"
},
{
"filterKey": "Email",
"filterValue": "test1#test.ps"
}
]
This is What API Return to me, a list of Person Keys and values,
Response:
{
"ResponseCode": "0",
"ResponseMessage": "Success",
"NumberOfRecords": "1",
"MainData": [
{
"recordData": [
{
"dataKey": "Name",
"dataValue": "Test Name"
},
{
"dataKey": "Email",
"dataValue": "test#test.ps"
},
{
"dataKey": "Number",
"dataValue": "532000000"
}
]
}
]
}
What i want to be the output is like this:
"Person": [
{
"Name":"Test",
"Email":"test#test.ps",
"Number":"532000000",
}]
Pasting the response JSON into an empty class file in Visual Studio using the Paste JSON As Classes feature, yields these classes:
public class Rootobject
{
public string ResponseCode { get; set; }
public string ResponseMessage { get; set; }
public string NumberOfRecords { get; set; }
public Maindata[] MainData { get; set; }
}
public class Maindata
{
public Recorddata[] recordData { get; set; }
}
public class Recorddata
{
public string dataKey { get; set; }
public string dataValue { get; set; }
}
You can create your own Person class.
Once you deserialize the JSON into the generated classes, one way to get a List<Person> would be to do something like this (please note that this is untested example code):
var people = rootObject.Maindata.Select(r =>
{
var name = r.recordData.Single(d => d.dataKey == "Name").dataValue;
var email = r.recordData.Single(d => d.dataKey == "Email").dataValue;
var number = r.recordData.Single(d => d.dataKey == "Number").dataValue;
return new Person(name, email, number);
}).ToList();
Related
{
Items: [
{
"title": "Object1",
"preview": {
"2048": "preview_9212.jpg",
"1024": "preview_6693.jpg",
}
},
{
"title": "Object2",
"preview": {
"2048": "preview_9888.jpg",
"1024": "preview_6890.jpg",
}
},
{
"title": "Object3",
"preview": {
"2048": "preview_9822.jpg",
"1024": "preview_6848.jpg",
}
}
]
}
I usually deserialise like this:
[Serializable]
public class JsonParser
{
public string title;
public List<Preview> preview;
}
[Serializable]
class Preview
{
public string 2048;
}
But since 2048 is an Integer is not possible to use this way.
I tried to deserialize the JSON to get preview like these:
public class Preview
{
[JsonProperty("2048")]
public string imageNumber { get; set; }
}
var user = JsonConvert.DeserializeObject<Preview>(jsonValue);
or
var json = JObject.Parse(jsonValue);
var preview = json["preview"].ToObject<Dictionary<string, string>>();
foreach (var entry in preview)
{
Debug.Log(entry.Key);
Debug.Log(entry.Value);
}
I got: NullReferenceException: Object reference not set to an instance of an object.
I also tried Deserializing JSON that has an int as a key in C# but again NullReferenceException;
Thanks for any help!
Since you have numeric string properties, you have 2 main choices:
Use something like [JsonProperty("2048")] and select valid name for the property
Or use a dictionary. This looks much more flexible for me, so you can try this code
Data data= JsonConvert.DeserializeObject<Data>(json);
string preview2048 = data.Items[0].Preview["2048"]; //preview_9212.jpg
or more complicated search using Linq
string obj3Preview2048 = data.Items.Where(i=> i.Title == "Object3")
.Select(i =>i.Preview["2048"]).FirstOrDefault(); //preview_9822.jpg
classes
public partial class Data
{
[JsonProperty("Items")]
public List<Item> Items { get; set; }
}
public partial class Item
{
[JsonProperty("title", NullValueHandling = NullValueHandling.Ignore)]
public string Title { get; set; }
[JsonProperty("token")]
public string Token { get; set; }
[JsonProperty("preview")]
public Dictionary<string, string> Preview { get; set; }
}
and you have some typos in json you posted, and I fix "type" to "title" in one of json objects. This is a fixed version
{
"Items": [{
"title": "Object1",
"token": "6561b1bbe5f1958848jhgd43d2",
"preview": {
"2048": "preview_9212.jpg",
"1024": "preview_6693.jpg"
}
},
{
"title": "Object2",
"token": "4a42eb54648DSFhUI664654d25",
"preview": {
"2048": "preview_9888.jpg",
"1024": "preview_6890.jpg"
}
},
{
"type": "Object3",
"token": "3fba64831dghkjgfkl5dfaegoj9",
"preview": {
"2048": "preview_9822.jpg",
"1024": "preview_6848.jpg"
}
}
]
}
I have a List of DataObject classes:
public class DataObject
{
public string Name { get; set; }
public List<Field> Fields { get; set; }
}
}
public class Field
{
public string Name { get; set;}
public string Type { get; set; }
public Object Value { get; set; }
public Field(string name, string type, string value)
{
Name = name;
Type = type;
if(type == "string") Value = (string)value;
else Value = Int32.Parse(value);
}
}
and i would like to serialize List made of DataObject classes to .json file. the way I show below using Json.NET, I have tried few scenarios but didn't find out how to do this.
Example:
Field field1 = new Field("Brand", "string", "Volvo);
Field field2 = new Field("Power", "int", 200);
List<Field> fields = new List<Field>{field1, field2};
DataObject car = new DataObject{
Name = "Car",
Fields = list
}
List<DataObjects> objects = new List<DataObjects>{car};
Result:
{
"Car":{
"Brand" : "Volvo",
"Power" : 200
}
}
Using Newtonsoft.Json, Serialization is rather easy. I took your code and added the following line:
string json = JsonConvert.SerializeObject(objects, Newtonsoft.Json.Formatting.Indented);
and it gave me the following output:
[
{
"Name": "Car",
"Fields": [
{
"Name": "Brand",
"Type": "string",
"Value": "Volvo"
},
{
"Name": "Power",
"Type": "int",
"Value": 200
}
]
}
]
I am trying to deserialise the live chat api json response to access the message id and text by filtering using user_type
JSON response
{{
"events": [
{
"type": "agent_details",
"message_id": 1,
"timestamp": 1532396384,
"user_type": "agent",
"agent": {
"name": "Adam Harris",
"job_title": "Support Agent",
"avatar": "livechat.s3.amazonaws.com/default/avatars/ab5b0666feffd67600206cd519fd77ea.jpg"
}
},
{
"type": "message",
"message_id": 3,
"timestamp": 1532396387,
"user_type": "visitor",
"text": "hi"
}
]
}}
JsonOject Class
class JsonLiveChatEvent
{
public class Rootobject
{
public Event[] events { get; set; }
}
public class Event
{
public string type { get; set; }
public int message_id { get; set; }
public int timestamp { get; set; }
public string user_type { get; set; }
public Agent agent { get; set; }
public string text { get; set; }
}
public class Agent
{
public string name { get; set; }
public string job_title { get; set; }
public string avatar { get; set; }
}
}
JsonConverter
string jsonStr= await Api.Chat.GetPendingMessages(visitorID, licenseID,
var chatEvent = JsonConvert.DeserializeObject<Rootobject>(jsonStr);
The chatEvent object will not let me call chatEvent.events.message_id for example. Any help would be greatly appreciated as this is my first time working with json in c#
There is nothing to do with JSON, you have parsed the JSON data back to Rootobject.
Now you are working with an instance of Rootobject as:
Rootobject chatEvent = JsonConvert.DeserializeObject<Rootobject>(jsonStr);
Event event1 = chatEvent.events[0];
Event event2 = chatEvent.events[1];
Also, consider the answer from Mohammad, because above JSON will throw an exception.
The main problem here is that your json is not valid, there is an extra { in the beginning and an extra } in the end.
Then you could deserialize your json with the types you provided
Your json contains more that one curly brackets so you have to first remove those
so your json look like
{
"events": [
{
"type": "agent_details",
"message_id": 1,
"timestamp": 1532396384,
"user_type": "agent",
"agent": {
"name": "Adam Harris",
"job_title": "Support Agent",
"avatar": "livechat.s3.amazonaws.com/default/avatars/ab5b0666feffd67600206cd519fd77ea.jpg"
}
},
{
"type": "message",
"message_id": 3,
"timestamp": 1532396387,
"user_type": "visitor",
"text": "hi"
}
]
}
After that you have to collect message ids depending upon user_type
So then we create enum for that
public enum UserType
{
agent, visitor
}
then we simply check in events that if user type is matches with any of above enum value.
If your json contains multiple events with multiple user types then collect those into List<int>.
If your json contains only single event of each user type then collect them into string variables.
Rootobject chatEvent = JsonConvert.DeserializeObject<Rootobject>(jsonStr);
List<int> agent_message_ids = new List<int>();
List<int> visitior_message_ids = new List<int>();
//string agent_message_id = string.Empty;
//string visitior_message_id = string.Empty;
foreach (Event e in chatEvent.events)
{
if (e.user_type == UserType.agent.ToString())
{
agent_message_ids.Add(e.message_id);
//agent_message_id = e.message_id;
}
if (e.user_type == UserType.visitor.ToString())
{
visitior_message_ids.Add(e.message_id);
//visitior_message_id = e.message_id;
}
}
We simply take a list of integers that store message ids for particular user_type
Try once may it help you
Result:
agent_message_ids:
visitor_message_ids:
I have a salesforce rest service which returns results in IEnumerable format. Below is a sample results.
[{
"attributes": {
"type": "Account",
"url": "/services/data/v28.0/sobjects/Account/001i0000WK5xYAAT"
},
"RecordType": {
"attributes": {
"type": "RecordType",
"url": "/services/data/v28.0/sobjects/RecordType/012i00000x7FwAAI"
},
"Name": "Health Care Practitioners"
},
"Name": "JOSEPH SANDERS",
"Status_ims__c": "Verified",
},
{
"attributes": {
"type": "Account",
"url": "/services/data/v28.0/sobjects/Account/001i000000WK5xYAAT"
},
"RecordType": {
"attributes": {
"type": "RecordType",
"url": "/services/data/v28.0/sobjects/RecordType/012i0000000x7FwAAI"
},
"Name": "Health Care Practitioners"
},
"Name": "DONALD GRABER",
"Status_ims__c": "Verified",
}]
public class Account
{
public string Name { get{ return GetOption ("Name");} }
public string Status_ims__c { get{ return GetOption ("Status_ims__c");}}
public Attributes attributes {get;}
public RecordType recordType {get;}
}
public class Attributes
{
public string type { get; set; }
public string url { get; set; }
}
public class Attributes2
{
public string type { get; set; }
public string url { get; set; }
}
public class RecordType
{
public Attributes2 attributes { get; set; }
public string Name { get; set; }
}
Above is the structure I have for Account Object. How to convert results to List and map to each property on Account object.
For Example is using json.net ->
var account = JsonConvert.DeserializeObject<List<Account>>(stringData);
Also if there are some differences between the object and the data you can use JsonProperty Annotations
Therefore you could also have more readable properties in your class model like
[JsonProperty("Status_ims__c ")]
public string Status
You can simple use this:
var accounts = JsonConvert.DeserializeObject<List<Account>>("your json string...");
If you use Newtonsoft.Json you can use Newtonsoft.Json.JsonConvert.DeserializeObject method.
Also make sure that your properties have setters in Account class.
I am using System.Net.Http.HttpClient, the version currently available in NuGet,
to retrieve data from a service in json format. The data roughly looks like this:
{
"schema": "Listing",
"data": {
"key": "28ba648c-de24-45d4-a7d9-70f810cf5438",
"children": [{
"kind": "type1",
"data": {
"body": "Four score and seven years ago...",
"parent_id": "2qh3l",
"report_count": 0,
"name": "c4j6yeh"
}
}, {
"kind": "type3",
"data": {
"domain": "abc.def.com",
"flagged": true,
"category": "news",
"saved": false,
"id": "t3dz0",
"created": 1335998011.0
}
}]
}
}
I use HttpContentExtensions.ReadAsAsync<T> to de-serialize that json string into an object graph. The type definitions looks roughly like this:
public class Response
{
public String schema { get;set; }
public ListingData data { get;set; }
}
public class ListingData
{
public string key { get;set; }
public List<OneItem> children { get;set; }
}
Here's the problem: I desire the type of the items in children to vary depending on the kind property. If kind is "type1" then I want to de-serialize an object of... let's call it Type1 . If kind is "type3" then I want an object of type Type3.
Right now, I can deserialize a List<Type1> or a List<Type3>, but I don't know how to tell the de-serialization logic to distinguish between the two.
I could merge all the properties of the "type1" data object and the "type3" data object into a single .NET Type. But the number of properties is large enough that this gets messy.
If the name of the property in the JSON (in this case data) were different, I could distinguish using that. If, for example, the data looked like this:
"children": [{
"kind": "type1",
"t1data": { ... }
}, {
"kind": "type3",
"t3data": { ... }
}]
...then I could do something like this in .NET:
public class OneItem
{
public string kind { get;set; }
public Type1 t1data { get;set; }
public Type3 t3data { get;set; }
}
But my data schema doesn't look like that.
Is it possible to choose the type for de-serialization by the content of the data? In other words,
look at the value of one property (in this case, kind) to determine how to de-serialize the content for another property (in this case, data).
Or is it possible to inject a filter or transformer that acts on the JSON before ReadAsAsync tries to deserialize it?
If so, How?
If you're ok w/ doing some pre-processing on your response and you can use Json.NET, you should be able to do what you want.
Given the following classes:
public class Response
{
public string schema
{
get;
set;
}
public ListingData data
{
get;
set;
}
}
public class ListingData
{
public string key
{
get;
set;
}
public List<object> children
{
get;
set;
}
}
public class Type1
{
public string body
{
get;
set;
}
public string parent_id
{
get;
set;
}
public int report_count
{
get;
set;
}
public string name
{
get;
set;
}
}
public class Type3
{
public string domain
{
get;
set;
}
public bool flagged
{
get;
set;
}
public string category
{
get;
set;
}
public bool saved
{
get;
set;
}
public string id
{
get;
set;
}
public double created
{
get;
set;
}
}
This test passes:
[Test]
public void RoundTrip()
{
var response = new Response
{
schema = "Listing",
data = new ListingData
{
key = "28ba648c-de24-45d4-a7d9-70f810cf5438",
children = new List<object>
{
new Type1
{
body = "Four score and seven years ago...",
parent_id = "2qh3l",
report_count = 0,
name = "c4j6yeh"
},
new Type3
{
domain = "abc.def.com",
flagged = true,
category = "news",
saved = false,
id = "t3dz0",
created = 1335998011.0
}
}
}
};
var jsonSerializerSettings = new JsonSerializerSettings
{
Formatting = Formatting.Indented,
TypeNameHandling = TypeNameHandling.Objects
};
string serializedResponse = JsonConvert.SerializeObject(response, jsonSerializerSettings);
Console.WriteLine(serializedResponse);
var roundTrippedResponse = JsonConvert.DeserializeObject<Response>(serializedResponse, jsonSerializerSettings);
Assert.That(roundTrippedResponse.data.children.First().GetType(), Is.EqualTo(typeof(Type1)));
Assert.That(roundTrippedResponse.data.children.Last().GetType(), Is.EqualTo(typeof(Type3)));
}
The output written to the console is:
{
"$type": "Test.Response, Test",
"schema": "Listing",
"data": {
"$type": "Test.ListingData, Test",
"key": "28ba648c-de24-45d4-a7d9-70f810cf5438",
"children": [
{
"$type": "Test.Type1, Test",
"body": "Four score and seven years ago...",
"parent_id": "2qh3l",
"report_count": 0,
"name": "c4j6yeh"
},
{
"$type": "Test.Type3, Test",
"domain": "abc.def.com",
"flagged": true,
"category": "news",
"saved": false,
"id": "t3dz0",
"created": 1335998011.0
}
]
}
}
So if you can transform your received response to match that of Json.NET's expected format, this will work.
To piece all of this together, you would need to write a custom MediaTypeFormatter and pass it to the ReadAsAsync<>() call.