How to parse the specific string in a set of data?

Question

Hi all,

Below is the data received from the device that connect to two temperature sensors. I have tried but unable to parse the two temperatures (temperature in BOLD) to text boxes.
How to parse the temperature that in the "data":[ ] to text boxes in VB.Net. The number after the "num_sensors": showed number of temperature sensors active like the sample data below showed two active temperature sensors and the temperature in the "data":[ ] .

Main State: Idle --> read_temperatures
Read Sensors State: Not running --> start
Sensor chain initialized
Sensor Conversion Started
Read Sensors State: start --> continue
Address Temperature (deg C)
4247B561000000CF 25.56
Read Sensors State: continue --> not running
{"num_sensors":2,"addresses":[14915921967490352962,14915921967490352988],"data":[25.5625,25.78]}
Main State: Read_Temp --> Idle

Thank you.

Answer 1

It is not clear what variables do you have. If there is a separate line with "{...}" data, then try something like this:

Dim example = "{""num_sensors"":2,""addresses"":[14915921967490352962,14915921967490352988],""data"":[25.5625,25.78]}"  
  
Dim d As MyData = System.Text.Json.JsonSerializer.Deserialize(Of MyData)(example)  
  
Dim firstValue As Double = d.data(0)  
Dim secondValue As Double = d.data(1)  

textbox1.Text = firstValue.ToString( )  
textbox2.Text = secondValue.ToString( )  

And add a class:

Class MyData  
    Public Property data As Double()  
End Class  

Also use the "Manage NuGet Packages" command from Project menu to add a reference to System.Text.Json (if not present yet).