Send data form multiple sensors to PC via serial Connection C# form

Projects Interfacing w/ Software on the Computer
10

what is the problem with your code?
if you are not sure a technique works write a simple test, e.g. arduino

void setup() {
    Serial.begin(115200);
    while(!Serial);
    Serial.println("567,890");
}

void loop() {
}

and a C# console program

  using System;
using System.IO.Ports;

namespace ConsoleTerminal
{
    class Program
    {
        static void Main(string[] args)
        {
            SerialPort serialPort = new SerialPort() ;
            serialPort.PortName = "COM10";
            serialPort.BaudRate = 115200;
            serialPort.Open();
            string s=serialPort.ReadLine();
            Console.WriteLine("data received " + s);
            string[] data = s.Split(',');
            int b, d;
            Int32.TryParse(data[0], out b);
            Int32.TryParse(data[1], out d);
            Console.WriteLine("b = " + b);
            Console.WriteLine("d = " + d);
        }
    }
}

result

data received 567,890
b = 567
d = 890
Press any key to continue . . .