C # Thermal Printer Socket network link print picture (i)

Using system;using system.collections.generic;using system.drawing;using system.linq;using System.Text;using    System.net;using system.net.sockets;namespace posprinter{///<summary>///Posprinter Summary description.    This class handles network printing and uses an IP port.        </summary> public class Netposprinter {string ipport = "127.0.0.1"; Public Netposprinter () {} public Netposprinter (string ipport) {This.ipport = Ippo rt;//Printer Port}///<summary>///output text to printer///</summary>//<            param name= "str" > content to print </param> public void PrintLine (string str) {//Establish connection            IPAddress IPA = ipaddress.parse (ipport);  IPEndPoint ipe = new IPEndPoint (IPA, 9100);//9100 specifies the port for the small ticket printer socket SOC = new socket (AddressFamily.InterNetwork,            SocketType.Stream, PROTOCOLTYPE.TCP); Soc.            Connect (IPE); String Str= "hello,123456789, Hello!            "; Byte[] B = System.Text.Encoding.GetEncoding ("GB2312").            GetBytes (str); Soc.            Send (b); Soc.        Close (); } public void Printpic (Bitmap bmp) {//IP and port converted to IPEndPoint instance IPEndPoint Ip_endpoint =            New IPEndPoint (Ipaddress.parse (ipport), 9100);            Create a socket socket socket = new socket (addressfamily.internetwork, SocketType.Stream, protocoltype.tcp); Connect to the server socket.            Connect (Ip_endpoint); Should the synchronous connect timeout be too long, guess should be the asynchronous way to establish a connection then,//Confirm the connection is available, then error or shut down, re-establish a synchronization connection//sock Et.            sendtimeout = 1000; Initialize the printer and print byte[] byte_send = encoding.getencoding ("GB18030").            GetBytes ("\x1b\x40"); Send the test information to the socket. Send (Byte_send, Byte_send.            Length, 0);            byte[] data = new byte[] {0x1B, 0x33, 0x00}; Socket. Send (data, data.            Length, 0);            Data[0] = (byte) ' \x00 '; DatA[1] = (byte) ' \x00 ';    DATA[2] = (byte) ' \x00 ';            Clear to Zero.            Color Pixelcolor;            ESC * M NL nH bitmap byte[] escbmp = new byte[] {0x1B, 0x2A, 0x00, 0x00, 0x00};            ESCBMP[2] = (byte) ' \x21 '; NL, NH escbmp[3] = (byte) (BMP.            Width% 256); ESCBMP[4] = (byte) (BMP.            WIDTH/256); data for (int i = 0; i < BMP. HEIGHT/24) + 1; i++) {socket.                Send (escbmp, escbmp.length, 0); for (int j = 0; J < BMP. Width; J + +) {for (int k = 0; k <; k++) {if ( (i *) + K) < BMP. Height)//If within the BMP size {pixelcolor = bmp.                            GetPixel (J, (I *) + K);  if (PIXELCOLOR.R = = 0) {DATA[K/8] + = (byte) (>> K         8));                   }}} socket.                    Send (data, 3, 0);                    Data[0] = (byte) ' \x00 ';                    DATA[1] = (byte) ' \x00 ';    DATA[2] = (byte) ' \x00 ';                Clear to Zero. } byte_send = encoding.getencoding ("GB18030").                GetBytes ("\ n"); Send the test information to the socket. Send (Byte_send, Byte_send.            Length, 0); }//Data Byte_send = encoding.getencoding ("GB18030").            GetBytes ("\ n"); Send the test information to the socket. Send (Byte_send, Byte_send.            Length, 0); Socket.        Close ();        }//<summary>//Open cash drawer///</summary> public void Opencashbox ()            {IPAddress IPA = ipaddress.parse (ipport);  IPEndPoint ipe = new IPEndPoint (IPA, 9100);//9100 specifies the port for the small ticket printer socket SOC = new socket (AddressFamily.InterNetwork, SocketType.Stream, Protocoltype.tcp); Soc.            Connect (IPE);            Char[] C = {convert.tochar, ' P ', Convert.tochar (0), Convert.tochar, Convert.tochar (255)}; Byte[] B = System.Text.Encoding.GetEncoding ("GB2312").            GetBytes (c); Soc.            Send (b); Soc.        Close (); }    }}

Transferred from: http://www.cnblogs.com/rinack/p/4838211.html

C # Thermal Printer Socket network link print picture (i)