• C# 热敏打印机 Socket 网络链接 打印 图片 (一)


    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("x1bx40");
    
                //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("
    ");
    
                    //发送测试信息
                    socket.Send(byte_send, byte_send.Length, 0);
                } // data
    
                byte_send = Encoding.GetEncoding("gb18030").GetBytes("
    ");
    
                //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();
            }
    
    
        }
    }
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  • 原文地址:https://www.cnblogs.com/rinack/p/4838211.html
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