how do I remove the last byte of a byte array?

Question

_{Thursday, February 10, 2011 10:45 PM}

If I have an array already containing data and I have to alter the byte array after it's been created, how do I remove the last byte of the following array? After the following line of code listed below, I want to change SerialPortBufferTemp to be SerialPortBufferTemp[iBytesRead - 1] or essentiallly remove the last item (a checksum value I want to discard] from the very end of the existing byte array. Thank you.

 SerialPortBufferTemp = new byte[iBytesRead];

All replies (5)

_{Thursday, February 10, 2011 10:54 PM ✅Answered | 1 vote}

Unfortunately, you need to copy to a new array in order to do this:

    byte[] tmp = new byte[iBytesRead-1];

    Array.Copy(SerialPortBufferTemp, tmp, iBytesRead-1);

    SerialPortBufferTemp = tmp;

Reed Copsey, Jr. - http://reedcopsey.com
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_{Thursday, February 10, 2011 11:04 PM}

Thank you Reed. That's it!

_{Thursday, February 10, 2011 11:13 PM}

Could you not call Array.Resize(ref SerialPortBufferTemp, iBytesRead - 1);

_{Thursday, February 10, 2011 11:29 PM}

Could you not call Array.Resize(ref SerialPortBufferTemp, iBytesRead - 1);

Yes.  It's basically doing the same thing I did, above (but adding extra checking, since it is more general purpose), but is a bit shorter code wise.Reed Copsey, Jr. - http://reedcopsey.com
If a post answers your question, please click "Mark As Answer" on that post and "Mark as Helpful".

_{Thursday, February 10, 2011 11:35 PM}

Sorry Reed, I actually has the reply window open for a good 45 minutes before I actually replied.

I didn't see the responses to this thread.