I need to parse following json in vb.net. I'm using Json.net but do not know how to do it.
Problem occurs in scan result contains scan detail that conaints anti virus name with some detail. but all the anti-virus is object not an array. So please any body tell me how to do it.
{"file_id":"aaa60a443e3a4426944da9e6fe8a3f3c","scan_results":{"scan_details":{"AegisLab":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Agnitum":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"Ahnlab":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-24T00:00:00Z","scan_time":1.0},"Antiy":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"AVG":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Avira":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"BitDefender":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"ByteHero":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"ClamWin":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"CYREN":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"DrWebGateway":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Emsisoft":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"ESET":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Filseclab":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Fortinet":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"F-prot":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"F-secure":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"GFI":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Hauri":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Ikarus":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"Jiangmin":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"K7":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-20T00:00:00Z","scan_time":1.0},"Kaspersky":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"Lavasoft":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"McAfee-Gateway":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Microsoft":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"NANO":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"nProtect":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Preventon":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"QuickHeal":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"Sophos":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"STOPzilla":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-21T00:00:00Z","scan_time":1.0},"SUPERAntiSpyware":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"Symantec":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"Tencent":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"TotalDefense":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"TrendMicro":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-21T00:00:00Z","scan_time":1.0},"TrendMicroHouseCall":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-21T00:00:00Z","scan_time":1.0},"VirIT":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-20T00:00:00Z","scan_time":1.0},"VirusBlokAda":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-20T00:00:00Z","scan_time":1.0},"Xvirus":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-23T00:00:00Z","scan_time":1.0},"Zillya!":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-22T00:00:00Z","scan_time":1.0},"Zoner":{"scan_result_i":0,"threat_found":"","def_time":"2015-02-18T00:00:00Z","scan_time":1.0}},"rescan_available":true,"data_id":"32fe182492834b6f88b1d95f6a14c886","scan_all_result_i":0,"start_time":"2015-02-23T13:10:55.549Z","total_time":1.0,"total_avs":43,"progress_percentage":100,"in_queue":0,"scan_all_result_a":"Clean"},"file_info":{"file_size":0,"upload_timestamp":"2015-02-23T00:40:41.029Z","md5":"D41D8CD98F00B204E9800998ECF8427E","sha1":"DA39A3EE5E6B4B0D3255BFEF95601890AFD80709","sha256":"E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855","file_type_category":"O","file_type_description":"empty","file_type_extension":"-","display_name":"C:\\testy.xml"},"data_id":"32fe182492834b6f88b1d95f6a14c886"}
First, you need to create a class (or multiple) that can represent the data you want to deserialize.
Looking at the input string you provided, you need a class for FileInfo, ScanDetail, ScanResults and one for the root (let's call it Scan).
It's simply a matter of mapping the JSON keys to a class property (and a dictionary for ScanDetail, since you probably don't want a property for each of it).
So, your classes should look like this:
public class Scan
public property file_id() as string
public property scan_results() AS ScanResults
public property file_info() as FileInfo
public property data_id() as string
End Class
public class ScanResults
public property scan_details As Dictionary(Of string, ScanDetail)
Public Property rescan_available() As Boolean
Public Property data_id() As String
Public Property scan_all_result_i() As Integer
Public Property start_time() As String
Public Property total_time() As Double
Public Property total_avs() As Integer
Public Property progress_percentage() As Integer
Public Property in_queue() As Integer
Public Property scan_all_result_a() As String
End Class
public class ScanDetail
public property scan_result_i() As integer
public property threat_found() as string
public property def_time() as string
public property scan_time() as string
End class
Public Class FileInfo
Public Property file_size() As Integer
Public Property upload_timestamp() As String
Public Property md5() As String
Public Property sha1() As String
Public Property sha256() As String
Public Property file_type_category() As String
Public Property file_type_description() As String
Public Property file_type_extension() As String
Public Property display_name() As String
End Class
Now the deserializing is as easy as
Dim details = NewtonSoft.JSon.JsonConvert.DeserializeObject(Of Scan)(your_json_string)
To get all threat_found values, you can easily query the result:
Dim threats = details.scan_results.scan_details.Select(Function(kvp) kvp.Value.threat_found) _
.Where(Function(t) Not String.IsNullOrWhiteSpace(t)) _
.ToList()
Here is how to deserialize that JSON string assuming you have referenced Json.Net. What you get is a dynamic object with property names the same as the JSON property names. If you were to create a Class with the correct properties you could also deserialize into that specific type and you would have the benefit of strong typing. Put a break point after this code and run with Debug. Look in the Locals window and you can inspect "theobj"'s properties.
Dim obj As String = "{""file_id"":""aaa60a443e3a4426944da9e6fe8a3f3c"",""scan_results"":{""scan_details"":{""AegisLab"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Agnitum"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""Ahnlab"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-24T00:00:00Z"",""scan_time"":1.0},""Antiy"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""AVG"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Avira"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""BitDefender"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""ByteHero"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""ClamWin"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""CYREN"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""DrWebGateway"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Emsisoft"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""ESET"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Filseclab"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Fortinet"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""F-prot"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""F-secure"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""GFI"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Hauri"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Ikarus"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""Jiangmin"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""K7"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-20T00:00:00Z"",""scan_time"":1.0},""Kaspersky"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""Lavasoft"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""McAfee-Gateway"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Microsoft"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""NANO"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""nProtect"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Preventon"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""QuickHeal"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""Sophos"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""STOPzilla"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-21T00:00:00Z"",""scan_time"":1.0},""SUPERAntiSpyware"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""Symantec"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""Tencent"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""TotalDefense"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""TrendMicro"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-21T00:00:00Z"",""scan_time"":1.0},""TrendMicroHouseCall"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-21T00:00:00Z"",""scan_time"":1.0},""VirIT"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-20T00:00:00Z"",""scan_time"":1.0},""VirusBlokAda"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-20T00:00:00Z"",""scan_time"":1.0},""Xvirus"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-23T00:00:00Z"",""scan_time"":1.0},""Zillya!"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-22T00:00:00Z"",""scan_time"":1.0},""Zoner"":{""scan_result_i"":0,""threat_found"":"""",""def_time"":""2015-02-18T00:00:00Z"",""scan_time"":1.0}},""rescan_available"":true,""data_id"":""32fe182492834b6f88b1d95f6a14c886"",""scan_all_result_i"":0,""start_time"":""2015-02-23T13:10:55.549Z"",""total_time"":1.0,""total_avs"":43,""progress_percentage"":100,""in_queue"":0,""scan_all_result_a"":""Clean""},""file_info"":{""file_size"":0,""upload_timestamp"":""2015-02-23T00:40:41.029Z"",""md5"":""D41D8CD98F00B204E9800998ECF8427E"",""sha1"":""DA39A3EE5E6B4B0D3255BFEF95601890AFD80709"",""sha256"":""E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855"",""file_type_category"":""O"",""file_type_description"":""empty"",""file_type_extension"":""-"",""display_name"":""C:\\testy.xml""},""data_id"":""32fe182492834b6f88b1d95f6a14c886""}"
Dim theobj = JsonConvert.DeserializeObject(obj)
Thanks for your reply guys. I have done it by following code snippet
Dim jsonstring = IO.File.ReadAllText("C:\\Users\\Administrator\\Desktop\\json.txt")
Dim jo = Newtonsoft.Json.Linq.JObject.Parse(jsonstring)
Dim scanDetail = jo("scan_results")("scan_details")
Dim virusCount As Integer
virusCount = 0
For Each entry As Newtonsoft.Json.Linq.JProperty In scanDetail
entry.CreateReader()
Console.WriteLine(entry.Name)
For Each Val As Object In entry
Dim abc = Newtonsoft.Json.Linq.JObject.Parse(Val.ToString())
Dim threatFound As String = abc("threat_found")
Dim result As Integer = String.Compare(threatFound, "")
If result = -1 Then
virusCount = virusCount + 1
End If
Next
Next
If virusCount = 0 Then
Console.WriteLine("No Virus")
Else
Console.WriteLine("Virus")
End If
Related
I have this JSON data:
{"asks":[["0.26039995",19.91610429],["0.26063345",3070.562292]],"bids":[["0.26000017",30381.45513902],["0.26000000",8299.1410574]],"isFrozen":"0","seq":50663190}
I wrote this code:
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim wc As New WebClient
Dim sURL As String = "https://poloniex.com/public?command=returnOrderBook¤cyPair=USDT_STR&depth=" & 2
Dim res As String = wc.DownloadString(New Uri(sURL))
Dim m As IEnumerable(Of Rootobject) = JsonConvert.DeserializeObject(Of IEnumerable(Of Rootobject))(res)
End Sub
Public Class Rootobject
Public Property asks As asksDef()
Public Property bids As bidsDef()
Public Property isFrozen As String
Public Property seq As Integer
End Class
Public Class asksDef
Public Property priceAsk As String
Public Property quantAsk As Integer
End Class
Public Class bidsDef
Public Property priceBid As String
Public Property quantBid As Integer
End Class
I've pasted the JSON class with VB paste special.
The question is: how to access to every ask, every bid and the isFrozen and seq values.
I got an error on this line:
Dim m As IEnumerable(Of Rootobject) = JsonConvert.DeserializeObject(Of IEnumerable(Of Rootobject))(res)
The error message I got is:
An unhandled exception of type
'Newtonsoft.Json.JsonSerializationException' occurred in
Newtonsoft.Json.dll
Additional information: Cannot deserialize the current JSON object
(e.g. {"name":"value"}) into type
'System.Collections.Generic.IEnumerable`1[poloniexAPI.Rootobject]'
because the type requires a JSON array (e.g. [1,2,3]) to deserialize
correctly.
To fix this error either change the JSON to a JSON array (e.g.
[1,2,3]) or change the deserialized type so that it is a normal .NET
type (e.g. not a primitive type like integer, not a collection type
like an array or List) that can be deserialized from a JSON object.
JsonObjectAttribute can also be added to the type to force it to
deserialize from a JSON object.
Path 'asks', line 1, position 8.
I'm stuck again this time with this JSON model. How to proceed with this?
{"BTC_BCN":{"id":7,"last":"0.00000042","lowestAsk":"0.00000043","highestBid":"0.00000042","percentChange":"0.00000000","baseVolume":"179.56364789","quoteVolume":"436786711.33832335","isFrozen":"0","high24hr":"0.00000043","low24hr":"0.00000039"},"BTC_BELA":{"id":8,"last":"0.00002091","lowestAsk":"0.00002097","highestBid":"0.00002091","percentChange":"-0.10831556","baseVolume":"12.57891843","quoteVolume":"579476.06165462","isFrozen":"0","high24hr":"0.00002345","low24hr":"0.00002088"}}
The root cause of this specific error is that your JSON represents a single object (which contains some arrays and other info) but you are trying to deserialize it as if the whole thing were enumerable. However, fixing this will not solve the whole problem; there are a couple of other issues as well.
This JSON is a little odd because it uses an array to group together each price and quantity pair for the bids and asks, whereas an object seems like it would be more appropriate (and more easily consumable). Since Json.Net does not have a facility to automatically map an array into class properties by index, you will need to use a custom JsonConverter to deserialize this data properly. Also, the prices are represented as strings for some reason where they should be decimals like the quantity. This can be handled in the converter as well.
Before we get to the converter, let's fix your class definitions. Since the bids and asks use the same structure, I would recommend defining a common class for that. Both price and quantity properties should be declared as Decimal:
Public Class PriceQuantityPair
Public Property price As Decimal
Public Property quantity As Decimal
End Class
Then define your root class like this:
Class RootObject
Public Property asks As List(Of PriceQuantityPair)
Public Property bids As List(Of PriceQuantityPair)
Public Property isFrozen As String
Public Property seq As Integer
End Class
Here is the code for the converter, which will translate the array structure for each pair into a PriceQuantityPair instance:
Class PriceQuantityPairConverter
Inherits JsonConverter
Public Overrides Function CanConvert(objectType As Type) As Boolean
Return objectType Is GetType(PriceQuantityPair)
End Function
Public Overrides Function ReadJson(reader As JsonReader, objectType As Type, existingValue As Object, serializer As JsonSerializer) As Object
Dim ja As JArray = JArray.Load(reader)
Dim pair As PriceQuantityPair = New PriceQuantityPair()
pair.price = ja(0).ToObject(Of Decimal)()
pair.quantity = ja(1).ToObject(Of Decimal)()
Return pair
End Function
Public Overrides ReadOnly Property CanWrite As Boolean
Get
Return False
End Get
End Property
Public Overrides Sub WriteJson(writer As JsonWriter, value As Object, serializer As JsonSerializer)
Throw New NotImplementedException()
End Sub
End Class
To use the converter, add a <JsonConverter> attribute to the PriceQuantityPair class like this:
<JsonConverter(GetType(PriceQuantityPairConverter))>
Public Class PriceQuantityPair
...
End Class
Finally, deserialize the JSON into the RootObject class like this:
Dim root As RootObject = JsonConvert.DeserializeObject(Of RootObject)(json)
Here is a demo: https://dotnetfiddle.net/dDHLtR
As far as I understand your question.
You can access the properties with the 'm' variable where you are storing the de serialized data.
Ex: m.isFrozen, m.seq, m.bids() & m.asks().
I am trying to serialise some JSON from nested objects into a string. However I am having issues with the arrays within the objects
Class RequestTaxes
Public Property usrname As String
Public Property pswrd As String
Public Property isAudit As Boolean
Public Property currn As String
Public Property lines() As TaxLines
End Class
Class TaxLines
Public Property debCredIndr As Integer
Public Property goodSrvCd As String
Public Property grossAmt As Double
Public Property lnItmId As String
Public Property qnty As Double
Public Property trnTp As Integer
Public Property accntDt As DateTime
Public Property custVendName As String
Public Property custVendCd As String
Public Property orgCd As String
End Class
However when I try to pass the serialised string to the API It is refused because the square brackets around the "lines" list are missing.
Does anyone know who to put these in when using Newtonsoft?
Dim Settings As New JsonSerializerSettings
Settings.NullValueHandling = NullValueHandling.Ignore
Dim InputString As String = JsonConvert.SerializeObject(message, Settings)
"message" contains a populated object of type RequestTaxes
I think you have your property declarations a bit off.
Public Property lines() As TaxLines
is equivalent to
Public Property lines As TaxLines
meaning that your TaxLines is only a single instance, not an array.
You need to add parantheses at the end of the line like so:
Public Property lines() As TaxLines()
I actually needed to do
Public Property lines As List(of TaxLines)
I've read other answers, but I still seem lost. I am trying to bring JSON into my objects. I call a JSON string through an API, and I want to convert it into the objects after the RequestManager. Am I missing methods or something? Also, the returnChampions2 function is wrong. I posted part of the JSON string after the methods, it's really long.
Public Class RequestManager
Public Function returnChampions2(ByVal strRegion As String) As LeagueChampionMaster
Dim strRequest As String = "https://global.api.pvp.net/api/lol/static-data/" + strRegion + "/v1.2/champion?api_key=" + _APIKey
Return JsonConvert.DeserializeObject(Of LeagueChampionMaster)(returnJSONRequest(strRequest))
End Function
Public Class LeagueChampionMaster
Private _Type As String
Private _Version As String
Private _Data As LeagueChampion()
End Class
Public Class LeagueChampion
Private _ID As Integer
Private _Key As String
Private _Name As String
Private _Title As String
End Class
The json:
{"type":"champion","version":"6.24.1","data":{"Jax":{"id":24,"key":"Jax","name":"Jax","title":"Grandmaster
at Arms"},"Sona":{"id":37,"key":"Sona","name":"Sona","title":"Maven of
the
Strings"},"Tristana":{"id":18,"key":"Tristana","name":"Tristana","title":"the
Yordle
Gunner"},"Varus":{"id":110,"key":"Varus","name":"Varus","title":"the
Arrow of
Retribution"},"Fiora":{"id":114,"key":"Fiora","name":"Fiora","title":"the
Grand
Duelist"},"Singed":{"id":27,"key":"Singed","name":"Singed","title":"the
Mad Chemist"},"TahmKench":{"id":223,"key":"TahmKench","name":"Tahm
Kench","title":"the River
King"},"Leblanc":{"id":7,"key":"Leblanc","name":"LeBlanc","title":"the
Deceiver"},"Thresh":{"id":412,"key":"Thresh","name":"Thresh","title":"the
Chain
Warden"},"Karma":{"id":43,"key":"Karma","name":"Karma","title":"the
Enlightened
One"},"Jhin":{"id":202,"key":"Jhin","name":"Jhin","title":"the
Virtuoso"},"Rumble":{"id":68,"key":"Rumble","name":"Rumble","title":"the
Mechanized
Menace"},"Udyr":{"id":77,"key":"Udyr","name":"Udyr","title":"the
Spirit Walker"},"LeeSin":{"id":64,"key":"LeeSin","name":"Lee
Sin","title":"the Blind
Monk"},"Yorick":{"id":83,"key":"Yorick","name":"Yorick","title":"Shepherd
of
Souls"},"Kassadin":{"id":38,"key":"Kassadin","name":"Kassadin","title":"the
Void
Walker"},"Sivir":{"id":15,"key":"Sivir","name":"Sivir","title":"the
Battle
Mistress"},"MissFortune":{"id":21,"key":"MissFortune","name":"Miss
Fortune","title":"the Bounty
Hunter"},"Draven":{"id":119,"key":"Draven","name":"Draven","title":"the
Glorious
Executioner"},"Yasuo":{"id":157,"key":"Yasuo","name":"Yasuo","title":"the
Unforgiven"},"Kayle":{"id":10,"key":"Kayle","name":"Kayle","title":"The
Judicator"},"Shaco":{"id":35,"key":"Shaco","name":"Shaco","title":"the
Demon
Jester"},"Renekton":{"id":58,"key":"Renekton","name":"Renekton","title":"the
Butcher of the
Sands"},"Hecarim":{"id":120,"key":"Hecarim","name":"Hecarim","title":"the
Shadow of
War"},"Fizz":{"id":105,"key":"Fizz","name":"Fizz","title":"the Tidal
Trickster"}}}
You have several issues. You should know that if you copy the json to the clipboard, Edit -> Paste Special -> Paste Json as Classes Visual Studio will create the classes for you to give you a decent starting point. In this case, the tool is a little dense and will create umpteen identical classes for "Fizz", "Shaco" etc. You have already normalized that.
However, with all the properties Private you wont be able to access the data. Then, the property names are wrong. The json key of id or key will not map/deserialize to _id or _key because they do not match. Lastly, the data collection should be a Dictionary. The key for each player/champion/item will be used as the Dictionary key:
Public Class LeagueContainer
Public Property type As String
Public Property version As String
Public Property data As Dictionary(Of String, DataItem)
End Class
Public Class DataItem
Public Property id As Integer
Public Property key As String
Public Property name As String
Public Property title As String
End Class
usage:
Dim jstr = ... from where ever ...
Dim myData = JsonConvert.DeserializeObject(Of LeagueContainer)(jstr)
' print the keys
For Each kvp In myData.data
Console.WriteLine(kvp.Key)
Next
' what is Yorick's title?
Console.WriteLine("Yorick is '{0}'", myData.data("Yorick").title)
(Partial) Output:
Jax
Sona
Tristana
Varus
Fiora
...
Yorick is 'Shepherd of Souls'
I am new to manipulating JSON format data retrieved through an Web API. I'm using Newtonsoft.Json.JsonConvert to deserialize and assign to datatable.
This is the JSON data I am trying to get into a datatable.
[{
"classDesc":"SIDEWALK,DRIVEWAY,CURB",
"classCode":"EH",
"legend":"017",
"isActive":"Y",
"atrSpaCityDistrictId":"00D17209F8F25F6D4A00011302",
"atrSpaCitieDistrict":{
"cityDistrict":"",
"isActive":"1",
"atrSpaClassLegends":null,
"id":"00D17209F8F25F6D4A00011302"
},
"id":"00D1748B8DA0AB0A7400011202"
}]
I have created the below classes
Public Class RootObject
Public Property classDesc As String
Public Property classCode As String
Public Property id As Integer
Public Property legend As Integer
Public Property isActive As String
Public Property atrSpaCityDistrictId As Integer
Public Property atrSpaCitieDistrict As List(Of Result) End Class
Public Class Result
Public Property cityDistrict As String
Public Property isActive As Integer
Public Property atrSpaClassLegends As List(Of Legend)
Public Property id As Integer
End Class
Public Class Legend
End Class
Below is my VB.Net code:
Dim table As DataTable Dim client As New HttpClient() client.BaseAddress = New Uri("http://localhost:5000/") client.DefaultRequestHeaders.Accept.Add(New MediaTypeWithQualityHeaderValue("application/json"))
Dim response As HttpResponseMessage = client.GetAsync("api/spaclasslegend").Result
If response.IsSuccessStatusCode Then
Dim json As String = response.Content.ReadAsStringAsync().Result table = JsonConvert.DeserializeObject(Of DataTable)(json)
End If
Getting below error
"Cannot deserialize the current JSON array (e.g. [1,2,3]) into type
'Alco.APTIS.Services.RootObject' because the type requires a JSON
object (e.g. {"name":"value"}) to deserialize correctly."
I have tried different ways to fix this using stackoverflow.com and finally posting here for help.
You have two unrelated issues.
Firstly, your root object doesn't match your JSON. If I copy your JSON into a code generator such as http://jsonutils.com/, I get the following, using a List(Of Legend) for the null atrSpaClassLegends property:
Public Class AtrSpaCitieDistrict
Public Property cityDistrict As String
Public Property isActive As String
Public Property atrSpaClassLegends As List(Of Legend)
Public Property id As String
End Class
Public Class RootObject
Public Property classDesc As String
Public Property classCode As String
Public Property legend As String
Public Property isActive As String
Public Property atrSpaCityDistrictId As String
Public Property atrSpaCitieDistrict As AtrSpaCitieDistrict
Public Property id As String
End Class
Public Class Legend
End Class
Having done this, it is now possible to deserialize your JSON into a List(Of RootObject):
Dim root = JsonConvert.DeserializeObject(Of List(Of RootObject))(jsonString)
Note you must deserialize as a List(Of RootObject) (or similar .Net collection such as an array) since your top level JSON container is a JSON array -- an ordered comma-separated sequence of values surrounded by [ and ]. This is explained in the Json.NET Serialization Guide. Sample fiddle.
Secondly, despite having created these types, in the code shown in your question you are not using them at all! Instead, you are deserializing to a DataTable. And unfortunately the atrSpaCitieDistrict property is a nested object:
{
"atrSpaCitieDistrict": {
"cityDistrict": "",
"isActive": "1",
"atrSpaClassLegends": null,
"id": "00D17209F8F25F6D4A00011302"
},
}
Json.NET does not support automatically deserializing column values that are complex objects into untyped data tables, and will throw an exception if one is encountered. Instead, you would need to deserialize into a typed data table. However, this may be a typo in your question; the exception error message indicates you are actually trying to deserialize into an object of type Alco.APTIS.Services.RootObject and not a DataTable.
Hello I need to convert this objetct to vb.
{"user":
[
{"name":"CompanyName"},
{"password":"CompanyPassword"},
{"email":"mail#company.com"},
{"name":"UserName"},
{"email":"user#mail.com"}
]
}
I try with this:
Public Class InfoObjUser
Public Property name As String
Public Property password As String
Public Property email As String
End Class
Public Class ObjUser
Public Property user As New List(Of InfoObjUser)
End Class
but when I go to serialize json object created in vb
I see that there are no curly brackets.
Also in vb I can't add {"name":"UserName"},{"email":"user#mail.com"}
because they are already present.
Take a look at this: JSON Serialization in .Net.
You need to add the System.Runtime.Serialization as reference to your project, and then set up a serializer object in your code. You also need to tag, which fields in your class match your JSON code.
This would be your class setup:
<DataContract>
Public Class InfoObjUser
<DataMember(Name:="Name")>
Public Property name As String
<DataMember(Name:="Password")>
Public Property password As String
<DataMember(Name:="Email")>
Public Property email As String
End Class
<DataContract>
Public Class ObjUser
<DataMember>
Public Property user As New List(Of InfoObjUser)
End Class
And a Json reader class for that would look like this:
Imports System.Runtime.Serialization
Imports System.Runtime.Serialization.Json
Public Class JsonReader
Public Shared Function FromString(Of T)(ByVal input As String) As T
Dim serializer As New DataContractJsonSerializer(GetType(T))
Dim memStream As New MemoryStream()
Dim sw As New StreamWriter(memStream)
sw.Write(input)
sw.Flush()
memStream.Position = 0
Dim returnObj As T = CType(serializer.ReadObject(memStream), T)
Return returnObj
End Function
End Class
And finally, you can call this class like this:
Dim jsonString ' = ...Input string here
Dim user As ObjUser = JsonReader.FromString(Of ObjUser)(jsonString)
However, it is not possible to have the name for two different data objects, as the serializer would not know where to map them to, as it goes by Object name.
I don't know how established this data structure already is, but if it's possible, I would suggest you to change the duplicated names, as no real mapping can occur when doing so programmatically.
<DataMember(Name:="UserName")>
Public Property username As String
<DataMember(Name:="UserEmail")>
Public Property usermail As String
If you would add something like this to your data model class and rename the field names in your Json, then it would work.