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(VB.NET UWP/WinRT) HTTP POST JSON and Parse JSON Response

Demonstrates how to send a JSON POST and then parse the JSON response.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

Dim json As New Chilkat.JsonObject

Dim success As Boolean = json.LoadFile("qa_data/json/jsonBodyForHttpPost.json")
If (success <> True) Then
    Debug.WriteLine(json.LastErrorText)
    Exit Sub
End If


Dim http As New Chilkat.Http
success = http.UnlockComponent("Anything for 30-day trial.")
If (success <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If

Dim resp As Chilkat.HttpResponse = Await http.PostJson2Async("https://test.something.com/XYZ/API/v1/CreditInsuranceCalculator/CalculatePremiums","application/json",json.Emit())
If (http.LastMethodSuccess <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim jsonResp As New Chilkat.JsonObject
jsonResp.Load(resp.BodyStr)

jsonResp.EmitCompact = False
Debug.WriteLine(jsonResp.Emit())

'  The JSON response to be parsed looks like this:
'  {
'   "LifeAmount": 513.85,
'    "LifeResidualAmount": 123.38,
'    "CriticalIllnessAmount": 0,
'    "CriticalIllnessResidualAmount": 0,
'    "DisabilityAmount": 881.70,
'    "PolicyFee": 0.00,
'    "PolicyFeeSecondary": 0,
'    "PolicyFeeHidden": 50.00,
'    "PolicyFeeHiddenSecondary": 0
'  }

'  We can get the floating point numbers as strings.  Then convert to double
'  using the appropriate string-to-double conversion for your programming language.
'  For example, in C++ use atof.  In C# use Convert.ToDouble.
Dim lifeAmount As String = jsonResp.StringOf("LifeAmount")
Dim lifeResidualAmount As String = jsonResp.StringOf("LifeResidualAmount")

Debug.WriteLine("LifeAmount = " & lifeAmount)
Debug.WriteLine("LifeResidualAmount = " & lifeResidualAmount)

 

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