条码打印

来源：互联网发布：穿越火线 amd 优化编辑：程序博客网时间：2024/05/20 01:34
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的摘要说明。       ///   此类处理网络打印,使用了IP端口.       ///   </summary>        public class NetPOSPrinter    {        string ipPort = "127.0.0.1";        public NetPOSPrinter()        {        }        public NetPOSPrinter(string IpPort)        {            this.ipPort = IpPort;//打印机端口            }        ///   <summary>            ///   输出文字到打印机            ///   ///   </summary>            ///   <param   name= "str "> 要打印的内容 </param>            public void PrintLine(string str)        {            //建立连接               IPAddress ipa = IPAddress.Parse(ipPort);            IPEndPoint ipe = new IPEndPoint(ipa, 9100);//9100为小票打印机指定端口               Socket soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            soc.Connect(ipe);            //string str= "hello,123456789,大家好! ";               byte[] b = System.Text.Encoding.GetEncoding("GB2312").GetBytes(str);            soc.Send(b);            soc.Close();        }        public void PrintPic(Bitmap bmp)        {            //把ip和端口转化为IPEndPoint实例               IPEndPoint ip_endpoint = new IPEndPoint(IPAddress.Parse(ipPort), 9100);            //创建一个Socket               Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            //连接到服务器               socket.Connect(ip_endpoint);            //应对同步Connect超时过长的办法，猜测应该是先用异步方式建立以个连接然后，               //确认连接是否可用，然后报错或者关闭后，重新建立一个同步连接                                   //socket.SendTimeout = 1000;               //初始化打印机，并打印               Byte[] byte_send = Encoding.GetEncoding("gb18030").GetBytes("\x1b\x40");            //发送测试信息               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 点阵图               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 < 24; k++)                    {                        if (((i * 24) + k) < bmp.Height)   // if within the BMP size                           {                            pixelColor = bmp.GetPixel(j, (i * 24) + k);                            if (pixelColor.R == 0)                            {                                data[k / 8] += (byte)(128 >> (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");                //发送测试信息                   socket.Send(byte_send, byte_send.Length, 0);            } // data               byte_send = Encoding.GetEncoding("gb18030").GetBytes("\n");            //发送测试信息               socket.Send(byte_send, byte_send.Length, 0);            socket.Close();        }        ///   <summary>            ///   打开钱箱            ///   </summary>            public void OpenCashBox()        {            IPAddress ipa = IPAddress.Parse(ipPort);            IPEndPoint ipe = new IPEndPoint(ipa, 9100);//9100为小票打印机指定端口               Socket soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            soc.Connect(ipe);            char[] c = { Convert.ToChar(27), 'p', Convert.ToChar(0), Convert.ToChar(60), Convert.ToChar(255) };            byte[] b = System.Text.Encoding.GetEncoding("GB2312").GetBytes(c);            soc.Send(b);            soc.Close();        }    }}
0 0