problem after connect to machine with serial port received unnecessary characters

[tazko]

Hi ,

my program connect to old machine , the program received data
but with many symbols and unnecessary characters

any suggestion

thanks

this pic is the differnce between old program (VB) that receive with
arranged characters :

[IMG]http://i42.tinypic.com/2z9ch1d.jpg[/IMG]

[kvprajapati]

>the program received data but with many symbols and unnecessary characters.

There maybe a text-encoding problem. Have a look at this article - http://www.dreamincode.net/forums/index.php?showtopic=35775

[tazko]

thanks adatapost for the help , i saw this link before but i didn't found resolve to my probelm i think the problem related to ReadExisting because its read all buffer data this the reason why i see unnecessary characters
please help me thanks

=========

private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
      // This method will be called when there is data waiting in the port's buffer

      // Determain which mode (string or binary) the user is in
      if (CurrentDataMode == DataMode.Text)
      {
        // Read all the data waiting in the buffer
          string data = comport.ReadExisting();
          comport.ReadByte();


        // Display the text to the user in the terminal
        Log(LogMsgType.Incoming, data);
      }
      else
      {
        // Obtain the number of bytes waiting in the port's buffer
        int bytes = comport.BytesToRead;

        // Create a byte array buffer to hold the incoming data
        byte[] buffer = new byte[bytes];

        // Read the data from the port and store it in our buffer
        comport.Read(buffer, 0, bytes);

        // Show the user the incoming data in hex format
        Log(LogMsgType.Incoming, ByteArrayToHexString(buffer));
      }
    }

[fesmaeili]

Hi ,

my program connect to old machine , the program received data
but with many symbols and unnecessary characters

any suggestion

thanks

this pic is the differnce between old program (VB) that receive with
arranged characters :

[IMG]http://i42.tinypic.com/2z9ch1d.jpg[/IMG]

You can either filter unwanted chars in the sender machine or filter out in your program if you can find a trend to setup your filter algorithm.

Fred

[tazko]

fesmaeili thanks for help i did filter as you suggested (now it show only alpha-numeric

this pic after the symbols filter : http://i40.tinypic.com/30nemph.jpg

but still big difference between the old verision and my new version http://i42.tinypic.com/2z9ch1d.jpg