send and recieve pakcet to xbee using vb.net

[muna.nassr]

how can do that
please any one can help me about send and recieve packets by serail port the pakeck that i need to send is in hex to controll some thing how can do this in vb.net how can do like this design in the picture below
please help me

[adam_k]

Read here: http://www.codeproject.com/Articles/5131/COM-port-made-simple-with-VB-NET or here: http://msdn.microsoft.com/en-us/library/system.io.ports.serialport.aspx

Your picture doesn't help us. Next time try including source code and the point you are having problem.