Hi,

I am reading the output of a microcontroller through the serial port to show a value on a textbox and to draw a meter accordingly. I have written the datarecieved function which works OK as it follows.

Code:
void sp_datarecieved(object sender, SerialDataReceivedEventArgs e)
        {
          data = sp.ReadLine(); 
          temp = Convert.ToDouble(data);
          if (data != null)
...