[phoeshell]

Now, I am trying to read data from serial com1 port. Now, I am not sure how to send. I found so many method to send but that are not so good and I cann't read any data. I am using VB.net 2005. Which is the best way and how can I read and send?

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[raziel_]

no mails the point of forum is so other can read it and learn to
you may need to look at serial port read function:
Public Function Read(ByVal buffer() As Byte, ByVal offset As Integer, ByVal count As Integer) As Integer
Member of System.IO.Ports.SerialPort
Summary:
Reads a number of bytes from the System.IO.Ports.SerialPort input buffer and writes those bytes into a byte array at the specified offset.

Parameters:
buffer: The byte array to write the input to.
offset: The offset in the buffer array to begin writing.
count: The number of bytes to read.

Return Values:
The number of bytes read.

Exceptions:
System.ArgumentNullException: The buffer passed is null.
System.InvalidOperationException: The specified port is not open.
System.ArgumentOutOfRangeException: The offset or count parameters are outside a valid region of the buffer being passed. Either offset or count is less than zero.
System.ArgumentException: offset plus count is greater than the length of the buffer.
System.TimeoutException: No bytes were available to read.


try it and tell us if you need some more help