C # send a command to a specified device and receive the data it returns

Network Programming is really troublesome, so it is hard to remember.

 

Private void mybutton#click (Object sender, eventargs e) <br/>{< br/> // establish a connection to send messages <br/> system. net. sockets. tcpclient TCP = new system. net. sockets. tcpclient ("192.168.24.23", 8051); <br/> string signal = "create Param" + "/R/N"; <br/> byte [] DATA = encoding. ASCII. getbytes (signal); <br/> networkstream stream = NULL; <br/> try <br/> {<br/> stream = TCP. getstream (); <br/> stream. write (data, 0, Data. length); <br/>}< br/> catch (exception ee) <br/>{< br/> console. writeline (EE. tostring (); <br/>}< br/> finally <br/> {<br/> // TCP. close (); <br/>}</P> <p> // take a 5-second break and wait for the returned value <br/> thread. sleep (5000); <br/> policyrecieved storerecievedstr = new policyrecieved (storereceivedstr); <br/> const int size = 1024*5; <br/> byte [] readbuffer = new byte [size]; <br/> int readtop = 0; </P> <p> system. net. sockets. networkstream ns; </P> <p> NS = TCP. getstream (); </P> <p> int getbyte = NS. read (readbuffer, readtop, size-readtop); </P> <p> byte [] tempbyte = new byte [getbyte]; <br/> for (INT I = 0; I <getbyte; I ++) <br/>{< br/> tempbyte [I] = readbuffer [I]; <br/>}</P> <p> byte [] unibytes = encoding. convert (ecsjis, ecuni, tempbyte); <br/> storerecievedstr. invoke (ecuni. getstring (unibytes); </P> <p> thread. sleep (1000); </P> <p> MessageBox. show ("result data ---->" + rsbuffer); <br/>}</P> <p> encoding ecuni = encoding. getencoding ("UTF-16"); <br/> encoding ecsjis = encoding. getencoding ("shift-JIS"); <br/> volatile protected string rsbuffer = ""; </P> <p> delegate void policyrecieved (string text ); </P> <p> Public void storereceivedstr (string rstr) <br/>{< br/> // This Is A delegate function <br/> lock (rsbuffer) <br/>{< br/> rsbuffer + = rstr; <br/> console. writeline (rstr); <br/>}< br/>}