Xamarin C#: How can I get JSON loaded into a TableView? - xamarin

I've been able to figure out how to call my web server, load JSON, loop through it and output values. But how can I populate this data into a cell. For example, I would like to output the 3 years returned into a table. How would I go about doing that?
async Task GetTowInfo()
{
loadingIndicator.StartAnimating ();
HttpClient client = new HttpClient ();
HttpResponseMessage response = await client.GetAsync ("myurl.com");
HttpContent content = response.Content;
var result = await content.ReadAsStringAsync ();
try
{
var parsed = JsonConvert.DeserializeObject<RootObject>(result);
foreach (var year in parsed.DATA.YEARMFG)
{
Console.WriteLine("Year: {0}", year);
}
}
catch (Exception e) {
Console.WriteLine (e);
}
loadingIndicator.StopAnimating ();
}
public class DATA
{
public List<int> YEARMFG { get; set; }
public List<string> MAKE { get; set; }
public List<string> MODEL { get; set; }
public List<string> ENGINE { get; set; }
public List<int> TOWLIMIT { get; set; }
public List<string> NOTE1 { get; set; }
public List<string> NOTE2 { get; set; }
}
public class RootObject
{
public int ROWCOUNT { get; set; }
public List<string> COLUMNS { get; set; }
public DATA DATA { get; set; }
}
<!----JSON------>
{
"ROWCOUNT": 3,
"COLUMNS": [
"YEARMFG",
"MAKE",
"MODEL",
"ENGINE",
"TOWLIMIT",
"NOTE1",
"NOTE2"
],
"DATA": {
"YEARMFG": [
2012,
2012,
2012
],
"MAKE": [
"Chevrolet/GMC",
"Chevrolet/GMC",
"Chevrolet/GMC"
],
"MODEL": [
"Avalanche 1500 4WD",
"Avalanche 1500 4WD",
"Avalanche 1500 4WD"
],
"ENGINE": [
"5.3L V-8",
"5.3L V-8",
"5.3L V-8"
],
"TOWLIMIT": [
5000,
5500,
8000
],
"NOTE1": [
"3.08 axle ratio",
"3.42 axle ratio",
"3.42 axle ratio"
],
"NOTE2": [
"",
"",
"Cooling or other accessory package required "
]
}
}

Related

C# parse JSON to listview?

Ho can deserialize this json to listview of xamarin
I try to make a simple deserilize but nohing
{
"1": {
"Category": "IT",
"DateB": "Mon, 20 May 2019 00:00:00 GMT",
"Description": "asdads",
"ProductName": "test2",
"Price": 123,
"ProductD": false,
"id": 1
},
"2": {
"Category": "Shop",
"DateB": "Mon, 20 May 2019 00:00:00 GMT",
"Description": "asdads",
"ProductName": "test123132",
"Price": 123,
"ProductD": false,
"id": 2
}
}
You can convert JSON to C# model using quicktype :
namespace QuickType
{
using System;
using System.Collections.Generic;
using System.Globalization;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
public partial class Product
{
[JsonProperty("Category")]
public string Category { get; set; }
[JsonProperty("DateB")]
public string DateB { get; set; }
[JsonProperty("Description")]
public string Description { get; set; }
[JsonProperty("ProductName")]
public string ProductName { get; set; }
[JsonProperty("Price")]
public long Price { get; set; }
[JsonProperty("ProductD")]
public bool ProductD { get; set; }
[JsonProperty("id")]
public long Id { get; set; }
}
public partial class Product
{
public static Dictionary<string, Product> FromJson(string json) => JsonConvert.DeserializeObject<Dictionary<string, Product>>(json, QuickType.Converter.Settings);
}
public static class Serialize
{
public static string ToJson(this Dictionary<string, Product> self) => JsonConvert.SerializeObject(self, QuickType.Converter.Settings);
}
internal static class Converter
{
public static readonly JsonSerializerSettings Settings = new JsonSerializerSettings
{
MetadataPropertyHandling = MetadataPropertyHandling.Ignore,
DateParseHandling = DateParseHandling.None,
Converters =
{
new IsoDateTimeConverter { DateTimeStyles = DateTimeStyles.AssumeUniversal }
},
};
}
}
And after create ListView with ViewCell and ViewModel. In this case, ViewModel will include properties from the product model.

file.filename is returned null in NEST elastic search query

I want to search on content field and return content and file name. The query below is taken from NEST github page
Connection string:
var node = new Uri("http://localhost:9200");
var settings = new ConnectionSettings(node);
var client = new ElasticClient(settings);
My class:
The class of search type is below (I feel problem might be here):
public class myclass
{
public string Content { get; set; }
public string filename { get; set; }
}
So I need only content and filename which is in file.filename, but in my search it return null for file.filename but content do return in same query.
NEST API CALL:
var request = new SearchRequest
{
From = 0,
Size = 10,
Query = new TermQuery { Name="Web", Field = "content", Value = "findthis" }
};
var response = client.Search<myclass>(request);
var twet = response.Documents.Select(t=>t.Content).ToList();
As I am new to elastic search so can't understand it. I even don't know why I am using term query to search a document while in kibana I user different queries and quite understandable match and match_phrase queries. So please help me get file.filename.
Edit: I have tried to include this too (later removed):
Source = new SourceFilter { Includes = ("file.filename") }
KIBANA Call:
This is the call from kibana console:
GET /extract/_search
{
"from" : 0, "size" : 1
, "query": {
"match": {
"content": "findthis"
}
}
}
The call returns following result I have used 1 result to show here:
Document in Elastic Search Index:
{
"took": 322,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 3330,
"max_score": 4.693223,
"hits": [
{
"_index": "extract",
"_type": "doc",
"_id": "29ebfd23bd7b276d7f3afc2bfad146d",
"_score": 4.693223,
"_source": {
"content": """
my title
A looooong document text to findthis.
""",
"meta": {
"title": "my title",
"raw": {
"X-Parsed-By": "org.apache.tika.parser.DefaultParser",
"Originator": "Microsoft Word 11",
"dc:title": "my title",
"Content-Encoding": "windows-1252",
"Content-Type-Hint": "text/html; charset=windows-1252",
"resourceName": "filename.htm",
"ProgId": "Word.Document",
"title": "my title",
"Content-Type": "text/html; charset=windows-1252",
"Generator": "Microsoft Word 11"
}
},
"file": {
"extension": "htm",
"content_type": "text/html; charset=windows-1252",
"last_modified": "2015-10-27T15:44:07.093+0000",
"indexing_date": "2018-02-10T08:16:23.329+0000",
"filesize": 32048,
"filename": "filename.htm",
"url": """file://D:\tmp\path\to\filename.htm"""
},
"path": {
"root": "e1a38f7da342f641e3eefad1ed1ca0f2",
"virtual": "/path/to/filename.htm",
"real": """D:\tmp\path\to\filename.htm"""
}
}
}
]
}
}
I am using NEST Api to get document file.filename from elastic search 6 on same server.
ISSUE:
Even though I have mentioned above too. Problem is filename is returned null in NEST API while content does return.
SOLUTION 1:
Using settings.DisableDirectStreaming(); I retrieved JSON result and created Following Class:
New Class:
public class Rootobject
{
public int took { get; set; }
public bool timed_out { get; set; }
public _Shards _shards { get; set; }
public Hits hits { get; set; }
}
public class _Shards
{
public int total { get; set; }
public int successful { get; set; }
public int skipped { get; set; }
public int failed { get; set; }
}
public class Hits
{
public int total { get; set; }
public float max_score { get; set; }
public Hit[] hits { get; set; }
}
public class Hit
{
public string _index { get; set; }
public string _type { get; set; }
public string _id { get; set; }
public float _score { get; set; }
public _Source _source { get; set; }
}
public class _Source
{
public string content { get; set; }
public Meta meta { get; set; }
public File file { get; set; }
public Path path { get; set; }
}
public class Meta
{
public string title { get; set; }
public Raw raw { get; set; }
}
public class Raw
{
public string XParsedBy { get; set; }
public string Originator { get; set; }
public string dctitle { get; set; }
public string ContentEncoding { get; set; }
public string ContentTypeHint { get; set; }
public string resourceName { get; set; }
public string ProgId { get; set; }
public string title { get; set; }
public string ContentType { get; set; }
public string Generator { get; set; }
}
public class File
{
public string extension { get; set; }
public string content_type { get; set; }
public DateTime last_modified { get; set; }
public DateTime indexing_date { get; set; }
public int filesize { get; set; }
public string filename { get; set; }
public string url { get; set; }
}
public class Path
{
public string root { get; set; }
public string _virtual { get; set; }
public string real { get; set; }
}
Query:
Instead of TermQuery I used MatchQuery here is my query, connection string is as above:
var request = new SearchRequest
{
From = 0,
Size = 1,
Query = new MatchQuery { Field = "content", Query = txtsearch.Text }
};
New Problem:
I tried much, though response does contain whole JSON result, but it is not being mapped properly.
I tried using Rootobject, Hits and Hit class but results only returned for _source as:
var response = client.Search<_Source>(request);
var twet = response.Documents.Select(t => t.file.filename).ToList();
Now I can retrieve content and file name but if I try using previous classes. The Hits and hits.total are returned as null.
I tried following queries:
var twet = response.Documents.SelectMany(t => t.hits.hits.Select(k => k._source.content)).ToList();
and
var twet1 = response.Hits.SelectMany(t => t.Source.hits.hits.Select(k => k._source.content)).ToList();
and
var twet1 = response.Documents.Select(t => t.Filename.fileName).ToList();
and
var twet = response.HitsMetadata.Hits.Select(t => t.Source.filename).ToList();
using Rootobject , Hits, Hit classes. While response does contain it.
So how can I use Rootobject class instead so that I can get whatever I want.
The elastic search server returns response as a JSON string and then Nest deserializes it into your required class.
In your case filename is a nested property inside the file property. To deserialize nested JSON properties check this link How to access nested object from JSON with Json.NET in C#
public class MyClass
{
public string Content { get; set; }
public FileClass File { get; set; }
}
public class Fileclass
{
public string Filename { get; set; }
}
And then you can read filename like response.Documents.Select(t=>t.File.Filename).ToList();

Rasa NLU:Entity Synonyms detection inconsistency

Me and my team have been using Rasa NLU as a replacement for MS LUIS for over 2 months now, and it has worked out pretty well for us so far. Now we have around 900 entries as Entity Synonyms(as we were using List entity in LUIS).
And only for some utterances, the entity is detected as synonyms and for the majority of utterances, it is unable to detect Entity Synonyms. In order to detect synonyms, I have to create another simple entity which again we are manually training with all the synonym values, once the intents are trained with this simple Entity Rasa seems to detect entity for this intent as both simple and synonyms.
And another quick question, Is the Entity Synonyms in Rasa designed to return only one matched entity(unlike LUIS which used to return all the matched entities values)?
Is there any alternative to list entity from LUIS here in Rasa?
Entity Synonyms in Rasa can lead to some confusion. The actual functionality that they provide is very simple. For each entity that is parsed by the model the value of that entity is checked against the list of entity synonyms. If the value matches an entity synonym then it is replaced with the synonym value.
The big catch in the above statement is that the the entity has to be identified by the model before it can be replaced with a synonym.
So take this as a simplified example. Here is my entity synonym definition:
{
"value": "New York City",
"synonyms": ["NYC", "nyc", "the big apple"]
}
If my training data only provides this example:
{
"text": "in the center of NYC",
"intent": "search",
"entities": [
{
"start": 17,
"end": 20,
"value": "New York City",
"entity": "city"
}
]
}
It is very unlikely that my model will be able to detect an entity in a sentence like In the center of the big apple. As I said above if the big apple isn't parsed as an entity by the model it cannot be replaced by the entity synonyms to read New York City.
For this reason you should include more examples in the actual common_examples of the training data with the entities labeled. Once all of the variations of the entity are being classified correctly then add those values to the entity synonym and they will be replaced.
[
{
"text": "in the center of NYC",
"intent": "search",
"entities": [
{
"start": 17,
"end": 20,
"value": "New York City",
"entity": "city"
}
]
},
{
"text": "in the centre of New York City",
"intent": "search",
"entities": [
{
"start": 17,
"end": 30,
"value": "New York City",
"entity": "city"
}
]
}
]
I've opened a pull request into the Rasa docs page to add a note to this effect.
Firstly, I have downloaded some LUIS model JSON for doing this, as shown in the following screenshot:
Next, I have written a sample C# console app for converting LUIS Model Schema into RASA.
Here is the LUISModel model class.
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
namespace JSONConversion.Models
{
public class LuisSchema
{
public string luis_schema_version { get; set; }
public string versionId { get; set; }
public string name { get; set; }
public string desc { get; set; }
public string culture { get; set; }
public List<Intent> intents { get; set; }
public List<entity> entities { get; set; }
public object[] composites { get; set; }
public List<Closedlist> closedLists { get; set; }
public List<string> bing_entities { get; set; }
public object[] actions { get; set; }
public List<Model_Features> model_features { get; set; }
public List<regex_Features> regex_features { get; set; }
public List<Utterance> utterances { get; set; }
}
public class regex_Features
{
public string name { get; set; }
public string pattern { get; set; }
public bool activated { get; set; }
}
public class Intent
{
public string name { get; set; }
}
public class entity
{
public string name { get; set; }
}
public class Closedlist
{
public string name { get; set; }
public List<Sublist> subLists { get; set; }
}
public class Sublist
{
public string canonicalForm { get; set; }
public List<string> list { get; set; }
}
public class Model_Features
{
public string name { get; set; }
public bool mode { get; set; }
public string words { get; set; }
public bool activated { get; set; }
}
public class Utterance
{
public string text { get; set; }
public string intent { get; set; }
[JsonProperty("entities")]
public List<Entities> Entities { get; set; }
}
public class Entities
{
[JsonProperty("entity")]
public string Entity { get; set; }
public int startPos { get; set; }
public int endPos { get; set; }
}
}
Here is the RASAModel model class:
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
namespace JSONConversion.Models
{
public class RASASchema
{
public Rasa_Nlu_Data rasa_nlu_data { get; set; }
}
public class Rasa_Nlu_Data
{
public List<Entity_Synonyms> entity_synonyms { get; set; }
public List<Regex_Features> regex_features { get; set; }
public List<Common_Examples> common_examples { get; set; }
}
public class Entity_Synonyms
{
public string value { get; set; }
public List<string> synonyms { get; set; }
}
public class Common_Examples
{
public string text { get; set; }
public string intent { get; set; }
public List<Entity> entities { get; set; }
}
public class Entity
{
public string entity { get; set; }
public string value { get; set; }
public int start { get; set; }
public int end { get; set; }
}
public class Regex_Features
{
public string name { get; set; }
public string pattern { get; set; }
}
}
And I have written 2 methods which parse the LUISModel model class for synonyms from the phraselist section and adds them in the common_examples object in RASA_NLU training object.
using JSONConversion.Models;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
namespace JSONConversion.Services
{
public static class JSONHelper
{
public static Task<string> ReadFromFile(string FilePath)
{
try
{
Task<string> readFromFileTask = Task.Run<string>(() =>
{
return File.ReadAllText(FilePath);
});
return readFromFileTask;
}
catch(Exception ex)
{
throw;
}
}
public static RASASchema ConvertLUISJSON(string StringifiedLUISJson)
{
try
{
LuisSchema luisSchema = JsonConvert.DeserializeObject<LuisSchema>(StringifiedLUISJson);
RASASchema rasaSchema = new RASASchema();
rasaSchema.rasa_nlu_data = new Rasa_Nlu_Data();
rasaSchema.rasa_nlu_data.common_examples = new List<Common_Examples>();
rasaSchema.rasa_nlu_data.entity_synonyms = new List<Entity_Synonyms>();
rasaSchema.rasa_nlu_data.regex_features = new List<Regex_Features>();
luisSchema.closedLists.ForEach(x =>
{
x.subLists.ForEach(y =>
{
rasaSchema.rasa_nlu_data.entity_synonyms.Add(new Entity_Synonyms()
{
value = y.canonicalForm,
synonyms = y.list
});
});
});
luisSchema.model_features.ForEach(x =>
{
rasaSchema.rasa_nlu_data.entity_synonyms.Add(new Entity_Synonyms()
{
value = x.name,
synonyms = x.words.Split(',').ToList()
});
});
luisSchema.regex_features.ForEach(x =>
{
rasaSchema.rasa_nlu_data.regex_features.Add(new Regex_Features()
{
name = x.name,
pattern = x.pattern
});
});
luisSchema.utterances.ForEach(x =>
{
Common_Examples rasaUtterances = new Common_Examples();
rasaUtterances.text = x.text;
rasaUtterances.intent = x.intent;
List<Entity> listOfRASAEntity = new List<Entity>();
x.Entities.ForEach(y =>
{
listOfRASAEntity.Add(new Entity()
{
start = y.startPos,
end = y.endPos,
entity = y.Entity,
value = x.text.Substring(y.startPos, (y.endPos - y.startPos) + 1)
});
});
rasaUtterances.entities = listOfRASAEntity;
rasaSchema.rasa_nlu_data.common_examples.Add(rasaUtterances);
});
return rasaSchema;
}
catch (Exception ex)
{
throw;
}
}
}
}
And just called those JSON conversion methods to convert LUIS Models into RASA models.
using System.Text;
using JSONConversion.Services;
using System.IO;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;
namespace JSONConversion
{
class Program
{
static void Main(string[] args)
{
string json = JsonConvert.SerializeObject(JSONConversion.Services.JSONHelper.ConvertLUISJSON(JSONHelper.ReadFromFile(#"C:\Users\xyz\Documents\luis.json").Result), new JsonSerializerSettings()
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
Formatting = Formatting.Indented
});
File.WriteAllText(#"C:\Users\xyz\Desktop\RASA\data\examples\RasaFormat.json", json, Encoding.UTF8);
}
}
}
After getting the RASA model, you can just simply train RASA for synonyms.

How to retrieve images from Facebook Graph API in android

I have retrieved json data from facebook graph api requesting GET from
https://graph.facebook.com/YOUR_PAGE_ID/albums?fields=name,photos{picture}&access_token=YOUR_ACCESS_TOKEN/
Json data is as follows:
{
"data": [
{
"name": "School Kids",
"photos": {
"data": [
{
"picture": "https://scontent.xx.fbcdn.net/v/t1.0-0/s130x130/15267641_1789056354665765_6384898034258459703_n.jpg?oh=44daa7be0ac1878e769bc16df444bd0a&oe=58B29329",
"id": "1789056354665765"
},
{
"picture": "https://scontent.xx.fbcdn.net/v/t1.0-0/s130x130/15356660_1789056361332431_834718824553815513_n.jpg?oh=69b3f1b1697808b87eed1e3053a67aaf&oe=58B735FB",
"id": "1789056361332431"
},
{
"picture": "https://scontent.xx.fbcdn.net/v/t1.0-0/s130x130/15356635_1789056401332427_1231396155404307815_n.jpg?oh=3de32d320ac6762adc0dbf8b1ef64e0e&oe=58F69648",
"id": "1789056401332427"
},
{
"picture": "https://scontent.xx.fbcdn.net/v/t1.0-0/s130x130/15380574_1789337074637693_1697389498501034556_n.jpg?oh=ddd57d119882b47172af689abde20cfb&oe=58F15477",
"id": "1789337074637693"
}
],
"paging": {
"cursors": {
"before": "MTc4OTA1NjM1NDY2NTc2NQZDZD",
"after": "MTc4OTMzNzA3NDYzNzY5MwZDZD"
}
}
},
"id": "1789056284665772"
},
{
"name": "Cover Photos",
"photos": {
"data": [
{
"picture": "https://scontent.xx.fbcdn.net/v/t1.0-0/s130x130/14519945_1762073987364002_4539899568406717011_n.jpg?oh=fc8c02e9ced0839eea22d08859b964d0&oe=58BC80D4",
"id": "1762073987364002"
}
],
"paging": {
"cursors": {
"before": "MTc2MjA3Mzk4NzM2NDAwMgZDZD",
"after": "MTc2MjA3Mzk4NzM2NDAwMgZDZD"
}
}
},
"id": "1762074137363987"
},
{
"name": "Profile Pictures",
"photos": {
"data": [
{
"picture": "https://scontent.xx.fbcdn.net/v/t1.0-0/p130x130/14495327_1762072887364112_1611299743258720903_n.jpg?oh=ae87944069fd154e817468a38d9cb4a1&oe=58AE8D02",
"id": "1762072887364112"
}
],
"paging": {
"cursors": {
"before": "MTc2MjA3Mjg4NzM2NDExMgZDZD",
"after": "MTc2MjA3Mjg4NzM2NDExMgZDZD"
}
}
},
"id": "1762072884030779"
}
],
"paging": {
"cursors": {
"before": "MTc4OTA1NjI4NDY2NTc3MgZDZD",
"after": "MTc2MjA3Mjg4NDAzMDc3OQZDZD"
}
}
}
What I want from these data is to get image and album name and display in GridView in android.
My attempt parsing these data is as json object from this method
public async void downloadJsonFeedAsync(string url) {
var httpClient = new HttpClient();
Task < string > contentsTask = httpClient.GetStringAsync(url);
// await! control returns to the caller and the task continues to run on another thread
string content = await contentsTask;
Console.Out.WriteLine("Response Body: \r\n {0}", content);
//Convert string to JSON object
mObject = Newtonsoft.Json.JsonConvert.DeserializeObject < ImageGridItemRootObject > (content);
//Update listview
Activity.RunOnUiThread(() => {
mGridView.Adapter = new PhotoGalleryGridViewAdapter(this.Activity, Resource.Layout.PhotoGalleryGridItemView, mObject.data);
mProgressBar.Visibility = ViewStates.Gone;
});
}
// root object
public class ImageGridItemRootObject
{
public string name { get; set; }
public string photos { get; set; }
public List<ImageGridItem> data { get; set; }
}
//ImageGridItem
public class ImageGridItem
{
private string picture;
private string id;
public ImageGridItem():base()
{
}
public string Picture
{
get { return picture; }
set { picture = value; }
}
public string Id
{
get { return id; }
set { id = value; }
}
}
The problem is I get Picture Null. I wonder which is jSon Object and which is jSon Array so that I can format rootObject in-order to retrieve jSon Array .
Thank you in advance.
If you take the returned JSON and use Edit > Paste Special > Paste JSON as classes in Visual Studio you get the following classes:
public class Rootobject
{
public Datum[] data { get; set; }
public Paging paging { get; set; }
}
public class Paging
{
public Cursors cursors { get; set; }
}
public class Cursors
{
public string before { get; set; }
public string after { get; set; }
}
public class Datum
{
public string name { get; set; }
public Photos photos { get; set; }
public string id { get; set; }
}
public class Photos
{
public Datum1[] data { get; set; }
public Paging1 paging { get; set; }
}
public class Paging1
{
public Cursors1 cursors { get; set; }
}
public class Cursors1
{
public string before { get; set; }
public string after { get; set; }
}
public class Datum1
{
public string picture { get; set; }
public string id { get; set; }
}
It looks like your classes are not matching the JSON, which means the Deserializer does not know what to do with the key/values that do not match in your contract.
Adjust your classes to better match the classes above, and it will deserialize with the image urls.

odata v4, List<> Property without expand

Is it possible in odata4 to create a model such as:
public class PuppyDogs
{
public string Name { get; set; }
public virtual IList<Bone> Bones { get; set; }
}
public class Bone
{
public string ChewType { get; set; }
public int Numberofchews { get; set; }
}
And the controller class looks like
public class PuppyDogController : ODataController
{
List<PuppysDog> mydogs = new List<PuppysDog>();
private PuppyDogController()
{
if (mydogs.Count == 0)
{
PuppysDog mydog = new PuppysDog();
mydog.Name = "Fido";
mydog.Bones = new List<Bone>()
{
new Bone{ ChewType = "Soft", Numberofchews=1 },
new Bone{ ChewType = "Hard", Numberofchews=2 }
};
mydogs.Add(mydog);
}
}
[EnableQuery]
public IQueryable<PuppysDog> Get()
{
return mydogs.AsQueryable();
}
}
Can I include the Bones property of PuppyDogs without using expand? By default Bones is not returned to the client.
There are several things nor clear in your code, for example, the entity set PuppyDogs don't have a key, the naming convention in the controller is a little wired and etc. With the following code, it can work perfectly, please take a look
PuppyDog.cs
public class PuppyDog
{
[Key]
public string Name { get; set; }
public virtual IList<Bone> Bones { get; set; }
}
Bone.cs
public class Bone
{
public string ChewType { get; set; }
public int Numberofchews { get; set; }
}
PupyyDogsController.cs
public class PuppyDogsController : ODataController
{
List<PuppyDog> mydogs = new List<PuppyDog>();
private PuppyDogsController()
{
if (mydogs.Count == 0)
{
PuppyDog mydog = new PuppyDog();
mydog.Name = "Fido";
mydog.Bones = new List<Bone>()
{
new Bone {ChewType = "Soft", Numberofchews = 1},
new Bone {ChewType = "Hard", Numberofchews = 2}
};
mydogs.Add(mydog);
}
}
[EnableQuery]
public IQueryable<PuppyDog> Get()
{
return mydogs.AsQueryable();
}
}
WebApiConfig.cs
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
builder.EntitySet<PuppyDog>("PuppyDogs");
config.MapODataServiceRoute("odata", null, builder.GetEdmModel(), new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer));
config.EnsureInitialized();
}
}
Then when try http://localhost:21830/PuppyDogs, I can successfully got the payload as
{
"#odata.context": "http://localhost:21830/$metadata#PuppyDogs",
"value": [
{
"Name": "Fido",
"Bones": [
{
"ChewType": "Soft",
"Numberofchews": 1
},
{
"ChewType": "Hard",
"Numberofchews": 2
}
]
}
]
}

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