I have a JSON object de-serialized using Newtonsoft JSON in VB.NET How can I get a specific key type value when it has a JSON inside another JSON. Please see JSON response below
I want to get the identity status based on identity type
My code attempt:
Dim jsonResult As String = myReader.ReadToEnd() 'My json line above
Dim jsonObject = JsonConvert.DeserializeObject(jsonResult)
Dim ContactNum = jsonObject("owner")("identity_statuses")("identity_status")
For i As Integer = 0 To ContactNum.Count
Dim arr = ContactNum(i)
Next
I am trying to deserialize this object from json to string but it doesnt work.
[\"661253BF9FE5463D968AC4CF9179FC56\"] -- this is the object.
Dim idDes As String = JsonConvert.DeserializeObject(id)
I want it like this: "661253BF9FE5463D968AC4CF9179FC56"
Any help?
What your JSON is telling you is that it's an array of strings, that's what you need to deserialize and if you always know you want the first string in that array you can access like this:
Dim idDes As String
Dim arr As String() = JsonConvert.DeserializeObject(Of String())(json)
idDes = arr.First()
I have a problem deserializing the following JSON string:
{"error":null,"id":1234,"result":[[["config.param1","111"],["config.param2","1222"]],"Config System",1234]}
My structure is:
Public Structure stuConResponse
Dim [Error] As String
Dim ID As String
Dim Result As List(Of stuSubResults)
End Structure
Public Structure stuSubResults
Public Property X1 As List(Of List(Of String))
Public Property X2 As String
Public Property X3 As String
End Structure
And my code is:
Dim JSonSettings As New Newtonsoft.Json.JsonSerializerSettings
JSonSettings.CheckAdditionalContent = True
JSonSettings.DateParseHandling = Newtonsoft.Json.DateParseHandling.DateTime
JSonSettings.DefaultValueHandling = Newtonsoft.Json.DefaultValueHandling.Ignore
JSonSettings.FloatFormatHandling = Newtonsoft.Json.FloatFormatHandling.DefaultValue
JSonSettings.NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore
Dim HeloResponse As Structures.stuConResponse = Newtonsoft.Json.JsonConvert.DeserializeObject(Of Structures.stuConResponse)(ReceivedData, JSonSettings)
I tried making "Results" the following:
1) A tuple of (list of (list of (string), string, string))
2) A list of (list of (string))
3) Other lists and tuples combined
For the life of me, I can't deserialise the "result" object whatsoever.
I have no problems reading the error and ID, but when Result comes in, I get the error that JSON can't do it.
I don't also mind if "result" can go into a string un-deserialised where I can do some manual logic, but that also don't work as JSON is trying to be too cleaver.
In other words, the problem is getting JSON to read "[[[X1,Y1],[X2,Y2],X3,X4]", notice that it's a list/array and that it does not have any Key-names which is where the problem is (I think).
It would be great to get your thoughts on this one.
Thanks
Dim JSONC = New JavaScriptSerializer().DeserializeObject(yourjson)
Debug.Print(JSONC("result")(0)(0)(0)) 'get result collection, then first element, then first object then first element of object
You decide what you want to do with the object.
You can convert ii to dictionary then get stuff with ("key") but if the data stays the same I see no point.
Finally, I solved it!, I had no idea that you can use IDICTIONARY to read the whole thing and then break it down into ILISTs...
For anyone who is having the same problem, here is the solution:
1) Code:
Dim I As Integer
Dim ConPolConfig As Structures.stuConPolSubscribeResponse = Nothing
Dim dicItems As IDictionary = Newtonsoft.Json.JsonConvert.DeserializeObject(Of IDictionary)(ReceivedData, JSonSettings)
ConPolConfig.ID = dicItems("id")
ConPolConfig.Error = dicItems("error")
If Not dicItems("result") Is Nothing Then
ConPolConfig.ConfigItems = New List(Of Dictionary(Of String, String))
Dim ConfigProperties As IList = dicItems("result")(0)
Dim ConfSysReader As String = dicItems("result")(1)
Dim Token As Integer = dicItems("result")(2)
Dim ParamKey As String
Dim ParamVal As String
Dim Dic As New Dictionary(Of String, String)
For I = 0 To ConfigProperties.Count - 1
ParamKey = ConfigProperties(I)(0)
ParamVal = ConfigProperties(I)(1)
Dic.Add(ParamKey, ParamVal)
ConPolConfig.ConfigItems.Add(Dic)
Next
End If
2) Structures:
Public Structure stuConPolSubscribeResponse
Dim [Error] As String
Dim ID As String
Dim ConfigItems As List(Of Dictionary(Of String, String))
End Structure
This works and does exactly what I am looking for as per my initial question. i.e. reading a list or lists where the master list has an additional 2 different elements (a string and an integer). the iDictionary would read the whole thing without any errors and then you could iterate it using an ILIST...
Don't ask me why the source JSON string is written in such a way... but now this works to read it...
... I need a coffee ...
What I am trying to achieve is convert XML to a JSON object. Currently I am doing it like this:
Public Class Person
Public Property Name As String
' other properties here'
End Class
Dim doc As XmlDocument
doc.LoadXml(arg_strXml)
Dim jsonValue As String = JsonConvert.SerializeXmlNode(doc)
Dim jsonObject = JsonConvert.DeserializeObject(Of Person)(jsonValue)
Dim firstName As String = jsonObject.Name
However the issue is the retrieved XML, and thus the deserialized JSON object has different fields/properties/elements depending on the correct function. It would be a nightmare to have a class for each possible XML.
Is there a way round not having to create a specific class (Person in this case) for each deserialize?
You can deserialze/parse your JSON string into Newtonsoft's JObject. Then you can access the properties like Dictionary(Of String, String), for example :
Dim arg_strXml = "<Person><Name>foo</Name></Person>"
Dim doc = New XmlDocument()
doc.LoadXml(arg_strXml)
Dim jsonValue = JsonConvert.SerializeXmlNode(doc)
Dim jsonObject = JObject.Parse(jsonValue)
Console.WriteLine(jsonObject("Person")("Name"))
dotnetfiddle demo
output :
foo
I am currently making a program that parses the Urban Dictionary API but I cannot get it to return the selected definition.
This is my current code fore retrieving and parsing the data:
Dim sourceString As String = New System.Net.WebClient().DownloadString("http://api.urbandictionary.com/v0/define?term=" & strRet)
rtxtDefinition.Text = sourceString
Dim jResults As JArray = JArray.Parse(sourceString)
Dim results As List(Of JToken) = jResults.Children().ToList()
For Each item As JProperty In results
item.CreateReader()
MsgBox(item.Value("definition"))
Next
note that strRet is the users input
this is an example of the urban dictionary API structure: http://pastebin.com/11Z5uVRN
The current code does not have support to find the (n)th definition only because I first need to get it to return a definition.
So obviously I am doing something wrong because of the error: Newtonsoft.Json.JsonReaderException but I am not sure.
Any help would be amazing. Thanks!
EDIT:
Root of json string you're dealing with is not an array but single object. Therefore, you can parse it to JObject instead of JArray, for example :
Dim jobj As JObject = JObject.Parse(sourceString);
Dim arr As JArray = jobj("list");
For Each(var item in arr.Children(Of JObject)())
MsgBox(item("definition").ToString());
Next