Read and write barcode scanning head with Ethernet communication

Encapsulate the communication as a class "

The features of the program have advantages:

Traditional wording when the bar code scanning head stop, abnormal power, network anomalies, communication terminal, the program can not resume the connection, the loss of data caused by failure, I write the program, whether the scan head power off or the production line restart, can be the first time to restart the connection and communication, stability is very good.

This is also in a friend old program constantly out of trouble, find me to help, I write again, after the effect is very good, very easy to use, no longer has been a problem.

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usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Net;usingSystem.Net.Sockets;usingSystem.Threading;namespacecodereaderclient.connecttype{/// <summary>    ///[email protected]///Niewei Suzhou 2016-09-10/// </summary>  Public    classTcpconnectclass {/// <summary>     ///Ethernet Communication Object/// </summary>      PublicTcpClient mytcpclient; /// <summary>     ///Data Flow Operations/// </summary>      PublicNetworkStream Mynetworkstream; /// <summary>     ///Barcode Results/// </summary>      Public stringBarcodestr =string.     Empty; /// <summary>     ///IP Address/// </summary>      Public  string_ipaddressstr =string.     Empty; /// <summary>     ///Communication Port/// </summary>      Public int_port =8080; /// <summary>     ///Initialize/// </summary>     /// <param name= "Ipaddressstr" ></param>     /// <param name= "Port" ></param>      PublicTcpconnectclass (stringIPADDRESSSTR,intPort) {_ipaddressstr=Ipaddressstr; _port=Port; Mytcpclient=NewTcpClient (); Thread Td=NewThread (runporcedue); Td.isbackground=true;     Td.start (); }        /// <summary>     ///connection check method, keep wire break reconnect/// </summary>      Public  voidConnect () {Try         {             if(!mytcpclient.connected) {IPAddress IPAddress1=Ipaddress.parse (_IPADDRESSSTR); Mytcpclient=NewTcpClient ();                 Mytcpclient.connect (IPAddress1, _port); Mynetworkstream=Mytcpclient.getstream (); }             if(mytcpclient.connected) {Mynetworkstream=Mytcpclient.getstream (); byte[] Buffer =New byte[] {0x41 }; Mynetworkstream.write (Buffer,0,1); }         }         Catch(Exception) {}}/// <summary>     ///Looping worker Threads/// </summary>     Private voidrunporcedue () {byte[] Buffer =New byte[ -]; intCount =0;  while(true)         {             //Check the connection//Send Heartbeat PackConnect (); //parse the received data                 Try                 {                     if(Mytcpclient. Available >0) {Buffer=New byte[ -]; Count= Mynetworkstream.read (Buffer,0, buffer.length); if(Count >0) {Barcodestr=Explanationbyte (Buffer); }                     }                 }                 Catch(Exception err) {stringA =Err.                 Message; } thread.sleep ( -); }     }     /// <summary>     ///parse a string from a barcode scan header/// </summary>     /// <param name= "Buffer" ></param>     /// <returns></returns>   Private   stringExplanationbyte (byte[] Buffer) {         if(Buffer. Length >0)         {             stringValue = System.Text.ASCIIEncoding.ASCII.GetString (Buffer,0, buffer.length); Value= Value.replace ("\ r",""); Value= Value.replace ("\ n",""); Value= Value.replace (" ",""); returnValue; }         Else         {             return string.         Empty; }              }             }}

Program written, you can use the Network debugging assistant to debug send and receive situation!

Read and write barcode scanning head with Ethernet communication