Reading a JSON and looping in VBA - json

Question

I'm getting from the server a JSON string with the statuses of a particular actions. In this case it returns results for 2 actions.
For
ID: 551720
and
ID: 551721
String looks like this:
[{"ElectronicId":551720,"DocumentNr":"130/10/15",
"DocumentTypeId":1,"DocumentTypeName":"eInvoice",
"StatusId":30,"StatusName":"Sent","RecipientBusinessNumber":"0050960000",
"RecipientBusinessUnit":"","RecipientBusinessName":"Comp d.o.o.",
"Created":"2019-07-23T21:21:23.743","Updated":"2019-07-23T21:21:24.587",
"Sent":"2019-07-23T21:21:24.587","Delivered":null},
{"ElectronicId":551721,"DocumentNr":"130/10/15",
"DocumentTypeId":1,"DocumentTypeName":"eInvoice",
"StatusId":30,"StatusName":"Sent","RecipientBusinessNumber":"00509605454",
"RecipientBusinessUnit":"","RecipientBusinessName":"Comp d.o.o.",
"Created":"2019-07-23T21:23:05.887","Updated":"2019-07-23T21:23:07.043",
"Sent":"2019-07-23T21:23:07.043","Delivered":null}]
Sometimes it returns 1, sometimes 2, or maybe 20 statuses (different "ElectronicId")
How could I loop within JSON.
I have a code that works when I have only 1 response, but it doesn't work when I have more than 1.
Here is the code for 1 response:
Dim cJS As New clsJasonParser
cJS.InitScriptEngine
results = """""here goes the JSON string""""""
Set JsonObject = cJS.DecodeJsonString(CStr(result))
Debug.Print cJS.GetProperty(JsonObject, "ElectronicId")
Debug.Print cJS.GetProperty(JsonObject, "DocumentNr")
Debug.Print cJS.GetProperty(JsonObject, "DocumentTypeId")
Debug.Print cJS.GetProperty(JsonObject, "DocumentTypeName")
Debug.Print cJS.GetProperty(JsonObject, "StatusId")
Here is the code for the clsJasonParser bClass:
Option Explicit
Private ScriptEngine As ScriptControl
Public Sub InitScriptEngine()
Set ScriptEngine = New ScriptControl
ScriptEngine.Language = "JScript"
ScriptEngine.AddCode "function getProperty(jsonObj, propertyName) { return jsonObj[propertyName]; } "
ScriptEngine.AddCode "function getKeys(jsonObj) { var keys = new Array(); for (var i in jsonObj) { keys.push(i); } return keys; } "
End Sub
Public Function DecodeJsonString(ByVal JsonString As String)
Set DecodeJsonString = ScriptEngine.Eval("(" + JsonString + ")")
End Function
Public Function GetProperty(ByVal JsonObject As Object, ByVal propertyName As String) As Variant
GetProperty = ScriptEngine.Run("getProperty", JsonObject, propertyName)
End Function
Public Function GetObjectProperty(ByVal JsonObject As Object, ByVal propertyName As String) As Object
Set GetObjectProperty = ScriptEngine.Run("getProperty", JsonObject, propertyName)
End Function

Answer 1

I would use jsonconverter.bas to parse the json. After installing the code from that link in a standard module called JsonConverter, go to VBE > Tools > References > Add a reference to Microsoft Scripting Runtime.
Then I would dimension an array to hold the results. I would determine rows from the number of items in the json collection returned and the number of columns from the size of the first item dictionary. Loop the json object, and inner loop the dictionary keys of each dictionary in collection, and populate the array. Write the array out in one go at end.
Below, I am reading in the json string from cell A1 but you would replace that with your json source.
Option Explicit
Public Sub test()
Dim json As Object, r As Long, c As Long, headers()
Dim results(), ws As Worksheet, item As Object, key As Variant
Set ws = ThisWorkbook.Worksheets("Sheet1")
Set json = JsonConverter.ParseJson(ws.[A1].Value) '<Reading json from cell. Returns collection
headers = json.item(1).keys 'each item in collection is a dictionary. Use .keys to get headers for results e.g. ElectronicId
ReDim results(1 To json.Count, 1 To UBound(headers) + 1)
For Each item In json 'loop json and populate results array
r = r + 1: c = 1
For Each key In item.keys
results(r, c) = item(key)
c = c + 1
Next
Next
With ws
.Cells(2, 1).Resize(1, UBound(headers) + 1) = headers
.Cells(3, 1).Resize(UBound(results, 1), UBound(results, 2)) = results
End With
End Sub