• C#发送ZPL指令到打印机


    最近项目开发需要用到标签打印机去打印,一开始使用的是C#自带打印类去做。效果是可以实现,但是打印出来的标签效果不好,二维码有锯齿状。因为这个方案就给我否决了。

    百度了下,知道了ZPL这种语言,其实就是斑马打印机得底层指令。

    开发思路就是,先把需要设计的标签用ZPL指令来编辑,然后发送到打印机。指令看着很复杂,其实就是一些特定规则符号,跟着说明书或者网上说明编辑就可以了。

    OK,那么问题来了,如何把指令发送给打印机呢?下面我们通过这个类来实现。直接拷贝就可以用了。

    using Microsoft.Win32.SafeHandles;
    using System;
    using System.Collections.Generic;
    using System.Drawing;
    using System.Drawing.Imaging;
    using System.IO;
    using System.IO.Ports;
    using System.Net;
    using System.Net.Sockets;
    using System.Runtime.InteropServices;
    using System.Text;
    
    namespace Command
    {
        /// <summary>
        /// 斑马打印助手,支持LPT/COM/USB/TCP四种模式,适用于标签、票据、条码打印。
        /// </summary>
        public static class ZebraPrintHelper
        {
            #region 定义API方法
    
            #region 写打印口(LPT)方法
            private const short FILE_ATTRIBUTE_NORMAL = 0x80;
            private const short INVALID_HANDLE_VALUE = -1;
            private const uint GENERIC_READ = 0x80000000;
            private const uint GENERIC_WRITE = 0x40000000;
            private const uint CREATE_NEW = 1;
            private const uint CREATE_ALWAYS = 2;
            private const uint OPEN_EXISTING = 3;
            [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
            private static extern SafeFileHandle CreateFile(string strFileName,
                uint dwDesiredAccess,
                uint dwShareMode,
                IntPtr intptrSecurityAttributes,
                uint dwCreationDisposition,
                uint dwFlagsAndAttributes,
                IntPtr intptrTemplateFile);
            #endregion
    
            [DllImport("winspool.Drv", EntryPoint = "OpenPrinterA", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
            public static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string printerName, out IntPtr intptrPrinter, IntPtr intptrPrintDocument);
    
            [DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
            public static extern bool ClosePrinter(IntPtr intptrPrinter);
    
            [DllImport("winspool.Drv", EntryPoint = "StartDocPrinterA", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
            public static extern bool StartDocPrinter(IntPtr intptrPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] DocInfo docInfo);
    
            [DllImport("winspool.Drv", EntryPoint = "EndDocPrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
            public static extern bool EndDocPrinter(IntPtr intptrPrinter);
    
            [DllImport("winspool.Drv", EntryPoint = "StartPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
            public static extern bool StartPagePrinter(IntPtr intptrPrinter);
    
            [DllImport("winspool.Drv", EntryPoint = "EndPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
            public static extern bool EndPagePrinter(IntPtr intptrPrinter);
    
            [DllImport("winspool.Drv", EntryPoint = "WritePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
            public static extern bool WritePrinter(IntPtr intptrPrinter, IntPtr intptrBytes, Int32 count, out Int32 written);
            #endregion
    
            #region 定义私有字段
    
            /// <summary>  
            /// 线程锁,防止多线程调用。  
            /// </summary>  
            private static object SyncRoot = new object();
    
            /// <summary>  
            /// 字节流传递时采用的字符编码  
            /// </summary>  
            private static readonly Encoding TransferFormat = Encoding.GetEncoding("iso-8859-1");
    
            #endregion
    
            #region 定义属性
            public static int Port { get; set; }
            public static string PrinterName { get; set; }
            public static bool IsWriteLog { get; set; }
            public static DeviceType PrinterType { get; set; }
            public static ProgrammingLanguage PrinterProgrammingLanguage { get; set; }
    
            public static float TcpLabelMaxHeightCM { get; set; }
            public static int TcpPrinterDPI { get; set; }
            public static string TcpIpAddress { get; set; }
            public static int TcpPort { get; set; }
            public static int Copies { get; set; }
    
            /// <summary>  
            /// 日志保存目录,WEB应用注意不能放在BIN目录下。  
            /// </summary>  
            public static string LogsDirectory { get; set; }
    
            private static byte[] GraphBuffer { get; set; }
            private static int GraphWidth { get; set; }
            private static int GraphHeight { get; set; }
    
            private static int RowSize
            {
                get
                {
                    return (((GraphWidth) + 31) >> 5) << 2;
                }
            }
    
            private static int RowRealBytesCount
            {
                get
                {
                    if ((GraphWidth % 8) > 0)
                    {
                        return GraphWidth / 8 + 1;
                    }
                    else
                    {
                        return GraphWidth / 8;
                    }
                }
            }
            #endregion  
    
            #region 静态构造方法
            static ZebraPrintHelper()
            {
                GraphBuffer = new byte[0];
                IsWriteLog = false;
                LogsDirectory = "logs";
            }
            #endregion
    
            #region 定义发送原始数据到打印机的方法
            private static bool SendBytesToPrinter(string printerName, IntPtr intptrBytes, Int32 count)
            {
                Int32 error = 0, written = 0;
                IntPtr intptrPrinter = new IntPtr(0);
                DocInfo docInfo = new DocInfo();
                bool bSuccess = false;
    
                docInfo.DocName = ".NET RAW Document";
                docInfo.DataType = "RAW";
    
                // Open the printer.  
                if (OpenPrinter(printerName.Normalize(), out intptrPrinter, IntPtr.Zero))
                {
                    // Start a document.  
                    if (StartDocPrinter(intptrPrinter, 1, docInfo))
                    {
                        // Start a page.  
                        if (StartPagePrinter(intptrPrinter))
                        {
                            // Write your bytes.  
                            bSuccess = WritePrinter(intptrPrinter, intptrBytes, count, out written);
                            EndPagePrinter(intptrPrinter);
                        }
                        EndDocPrinter(intptrPrinter);
                    }
                    ClosePrinter(intptrPrinter);
                }
                // If you did not succeed, GetLastError may give more information  
                // about why not.  
                if (bSuccess == false)
                {
                    error = Marshal.GetLastWin32Error();
                }
                return bSuccess;
            }
    
            public static bool SendFileToPrinter(string printerName, string fileName)
            {
                // Open the file.  
                FileStream fs = new FileStream(fileName, FileMode.Open);
                // Create a BinaryReader on the file.  
                BinaryReader br = new BinaryReader(fs);
                // Dim an array of bytes big enough to hold the file's contents.  
                Byte[] bytes = new Byte[fs.Length];
                bool bSuccess = false;
                // Your unmanaged pointer.  
                IntPtr pUnmanagedBytes = new IntPtr(0);
                int nLength;
    
                nLength = Convert.ToInt32(fs.Length);
                // Read the contents of the file into the array.  
                bytes = br.ReadBytes(nLength);
                // Allocate some unmanaged memory for those bytes.  
                pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
                // Copy the managed byte array into the unmanaged array.  
                Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
                // Send the unmanaged bytes to the printer.  
                bSuccess = SendBytesToPrinter(printerName, pUnmanagedBytes, nLength);
                // Free the unmanaged memory that you allocated earlier.  
                Marshal.FreeCoTaskMem(pUnmanagedBytes);
                return bSuccess;
            }
    
            public static bool SendBytesToPrinter(string printerName, byte[] bytes)
            {
                bool bSuccess = false;
                IntPtr pUnmanagedBytes = new IntPtr(0);
                int nLength = bytes.Length;
                // Allocate some unmanaged memory for those bytes.  
                pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
                // Copy the managed byte array into the unmanaged array.  
                Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
                // Send the unmanaged bytes to the printer.  
                bSuccess = SendBytesToPrinter(printerName, pUnmanagedBytes, nLength);
                // Free the unmanaged memory that you allocated earlier.  
                Marshal.FreeCoTaskMem(pUnmanagedBytes);
                return bSuccess;
            }
    
            public static bool SendStringToPrinter(string printerName, string text)
            {
                IntPtr pBytes;
                Int32 dwCount;
                // How many characters are in the string?  
                dwCount = (text.Length + 1) * Marshal.SystemMaxDBCSCharSize;
                // Assume that the printer is expecting ANSI text, and then convert  
                // the string to ANSI text.  
                pBytes = Marshal.StringToCoTaskMemAnsi(text);
                // Send the converted ANSI string to the printer.  
                SendBytesToPrinter(printerName, pBytes, dwCount);
                Marshal.FreeCoTaskMem(pBytes);
                return true;
            }
            #endregion  
    
            #region 日志记录方法
            private static void WriteLog(string text, LogType logType)
            {
                string endTag = string.Format("
    {0}
    ", new string('=', 80));
                string path = string.Format("{0}\{1}-{2}.log", LogsDirectory, DateTime.Now.ToString("yyyy-MM-dd"), logType);
                if (!Directory.Exists(LogsDirectory))
                {
                    Directory.CreateDirectory(LogsDirectory);
                }
                if (logType == LogType.Error)
                {
                    File.AppendAllText(path, string.Format("{0}{1}", text, endTag), Encoding.Default);
                }
                if (logType == LogType.Print)
                {
                    if (text.StartsWith("N
    GW"))
                    {
                        using (FileStream fs = new FileStream(path, FileMode.Append))
                        {
                            byte[] bytes = TransferFormat.GetBytes(text);
                            byte[] tag = TransferFormat.GetBytes(endTag);
                            fs.Write(bytes, 0, bytes.Length);
                            fs.Write(tag, 0, tag.Length);
                            fs.Close();
                        }
                    }
                    else
                    {
                        File.AppendAllText(path, string.Format("{0}{1}", text, endTag), Encoding.Default);
                    }
                }
            }
    
            private static void WriteLog(byte[] bytes, LogType logType)
            {
                string endTag = string.Format("
    {0}
    ", new string('=', 80));
                string path = string.Format("{0}\{1}-{2}.log", LogsDirectory, DateTime.Now.ToString("yyyy-MM-dd"), logType);
                if (!Directory.Exists(LogsDirectory))
                {
                    Directory.CreateDirectory(LogsDirectory);
                }
                if (logType == LogType.Error)
                {
                    File.AppendAllText(path, string.Format("{0}{1}", Encoding.Default.GetString(bytes), endTag), Encoding.Default);
                }
                if (logType == LogType.Print)
                {
                    string transferFormat = TransferFormat.GetString(bytes);
                    if (transferFormat.StartsWith("N
    GW"))
                    {
                        using (FileStream fs = new FileStream(path, FileMode.Append))
                        {
                            byte[] tag = TransferFormat.GetBytes(endTag);
                            fs.Write(bytes, 0, bytes.Length);
                            fs.Write(tag, 0, tag.Length);
                            fs.Close();
                        }
                    }
                    else
                    {
                        File.AppendAllText(path, string.Format("{0}{1}", Encoding.Default.GetString(bytes), endTag), Encoding.Default);
                    }
                }
            }
            #endregion  
    
            #region 封装方法,方便调用。
            public static bool PrintWithCOM(string cmd, int port, bool isWriteLog)
            {
                PrinterType = DeviceType.COM;
                Port = port;
                IsWriteLog = isWriteLog;
                return PrintCommand(cmd);
            }
    
            public static bool PrintWithCOM(byte[] bytes, int port, bool isWriteLog, ProgrammingLanguage progLanguage)
            {
                PrinterType = DeviceType.COM;
                Port = port;
                IsWriteLog = isWriteLog;
                PrinterProgrammingLanguage = progLanguage;
                return PrintGraphics(bytes);
            }
    
            public static bool PrintWithLPT(string cmd, int port, bool isWriteLog)
            {
                PrinterType = DeviceType.LPT;
                Port = port;
                IsWriteLog = isWriteLog;
                return PrintCommand(cmd);
            }
    
            public static bool PrintWithLPT(byte[] bytes, int port, bool isWriteLog, ProgrammingLanguage progLanguage)
            {
                PrinterType = DeviceType.LPT;
                Port = port;
                IsWriteLog = isWriteLog;
                PrinterProgrammingLanguage = progLanguage;
                return PrintGraphics(bytes);
            }
    
            public static bool PrintWithDRV(string cmd, string printerName, bool isWriteLog)
            {
                PrinterType = DeviceType.DRV;
                PrinterName = printerName;
                IsWriteLog = isWriteLog;
                return PrintCommand(cmd);
            }
    
            public static bool PrintWithDRV(byte[] bytes, string printerName, bool isWriteLog, ProgrammingLanguage progLanguage)
            {
                PrinterType = DeviceType.DRV;
                PrinterName = printerName;
                IsWriteLog = isWriteLog;
                PrinterProgrammingLanguage = progLanguage;
                return PrintGraphics(bytes);
            }
            #endregion  
    
            #region 打印ZPL、EPL指令
            public static bool PrintCommand(string cmd)
            {
                lock (SyncRoot)
                {
                    bool result = false;
                    try
                    {
                        switch (PrinterType)
                        {
                            case DeviceType.COM:
                                result = comPrint(Encoding.Default.GetBytes(cmd));
                                break;
                            case DeviceType.LPT:
                                result = lptPrint(Encoding.Default.GetBytes(cmd));
                                break;
                            case DeviceType.DRV:
                                result = drvPrint(Encoding.Default.GetBytes(cmd));
                                break;
                            case DeviceType.TCP:
                                result = tcpPrint(Encoding.Default.GetBytes(cmd));
                                break;
                        }
                        if (!string.IsNullOrEmpty(cmd) && IsWriteLog)
                        {
                            WriteLog(cmd, LogType.Print);
                        }
                    }
                    catch (Exception ex)
                    {
                        //记录日志  
                        if (IsWriteLog)
                        {
                            WriteLog(string.Format("{0} => {1}
    {2}", DateTime.Now, ex.Message, ex), LogType.Error);
                        }
                    }
                    finally
                    {
                        GraphBuffer = new byte[0];
                    }
                    return result;
                }
            }
            #endregion  
    
            #region 打印图像字节流
            public static bool PrintGraphics(byte[] graph)
            {
                lock (SyncRoot)
                {
                    bool result = false;
                    try
                    {
                        GraphBuffer = graph;
                        byte[] cmdBytes = new byte[0];
                        if (PrinterProgrammingLanguage == ProgrammingLanguage.ZPL)
                        {
                            cmdBytes = getZPLBytes();
                        }
                        if (PrinterProgrammingLanguage == ProgrammingLanguage.EPL)
                        {
                            cmdBytes = getEPLBytes();
                        }
                        if (PrinterProgrammingLanguage == ProgrammingLanguage.CPCL)
                        {
                            cmdBytes = getCPCLBytes();
                        }
                        switch (PrinterType)
                        {
                            case DeviceType.COM:
                                result = comPrint(cmdBytes);
                                break;
                            case DeviceType.LPT:
                                result = lptPrint(cmdBytes);
                                break;
                            case DeviceType.DRV:
                                result = drvPrint(cmdBytes);
                                break;
                            case DeviceType.TCP:
                                result = tcpPrint(cmdBytes);
                                break;
                        }
                        if (cmdBytes.Length > 0 && IsWriteLog)
                        {
                            WriteLog(cmdBytes, LogType.Print);
                        }
                    }
                    catch (Exception ex)
                    {
                        //记录日志  
                        if (IsWriteLog)
                        {
                            WriteLog(string.Format("{0} => {1}
    {2}", DateTime.Now, ex.Message, ex), LogType.Error);
                        }
                    }
                    finally
                    {
                        GraphBuffer = new byte[0];
                    }
                    return result;
                }
            }
            #endregion  
    
            #region COM/LPT/DRV三种模式打印方法
            private static bool drvPrint(byte[] cmdBytes)
            {
                bool result = false;
                try
                {
                    if (!string.IsNullOrEmpty(PrinterName))
                    {
                        result = SendBytesToPrinter(PrinterName, cmdBytes);
                    }
                }
                catch (Exception ex)
                {
                    throw ex;
                }
                return result;
            }
    
            private static bool comPrint(byte[] cmdBytes)
            {
                bool result = false;
                SerialPort com = new SerialPort(string.Format("{0}{1}", PrinterType, Port), 9600, Parity.None, 8, StopBits.One);
                try
                {
                    com.Open();
                    com.Write(cmdBytes, 0, cmdBytes.Length);
                    result = true;
                }
                catch (Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    if (com.IsOpen)
                    {
                        com.Close();
                    }
                }
                return result;
            }
    
            private static bool lptPrint(byte[] cmdBytes)
            {
                bool result = false;
                FileStream fileStream = null;
                StreamWriter streamWriter = null;
                SafeFileHandle handle = null;
                try
                {
                    handle = CreateFile(string.Format("{0}{1}", PrinterType, Port), GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);
                    if (!handle.IsInvalid)
                    {
                        fileStream = new FileStream(handle, FileAccess.ReadWrite);
                        streamWriter = new StreamWriter(fileStream, Encoding.Default);
                        streamWriter.Write(cmdBytes);
                        result = true;
                    }
                }
                catch (Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    if (fileStream != null)
                    {
                        fileStream.Close();
                        fileStream = null;
                    }
                    if (streamWriter != null)
                    {
                        streamWriter.Close();
                        streamWriter = null;
                    }
                    if (handle != null)
                    {
                        handle.Close();
                        handle = null;
                    }
                }
                return result;
            }
    
            private static bool tcpPrint(byte[] cmdBytes)
            {
                bool result = false;
                TcpClient tcp = null;
                try
                {
                    IPAddress ip = IPAddress.Parse(TcpIpAddress);
                    IPEndPoint iport = new IPEndPoint(ip, TcpPort);//9100为小票打印机指定端口
                    tcp = new TcpClient(iport);
                    tcp.SendTimeout = 1000;
                    tcp.ReceiveTimeout = 1000;
                    if (tcp.Connected)
                    {
                        tcp.Client.Send(cmdBytes);
                        result = true;
                    }
                }
                catch (Exception ex)
                {
                    throw new Exception("打印失败,请检查打印机或网络设置。", ex);
                }
                finally
                {
                    if (tcp != null)
                    {
                        if (tcp.Client != null)
                        {
                            tcp.Client.Close();
                            tcp.Client = null;
                        }
                        tcp.Close();
                        tcp = null;
                    }
                }
                return result;
            }
            #endregion  
    
            #region 生成ZPL图像打印指令
            private static byte[] getZPLBytes()
            {
                byte[] result = new byte[0];
                byte[] bmpData = getBitmapData();
                string textBitmap = string.Empty;
                string textHex = BitConverter.ToString(bmpData).Replace("-", string.Empty);
                for (int i = 0; i < GraphHeight; i++)
                {
                    textBitmap += textHex.Substring(i * RowRealBytesCount * 2, RowRealBytesCount * 2) + "
    ";
                }
                string text = string.Format("~DGR:IMAGE.GRF,{0},{1},
    {2}^XGR:IMAGE.GRF,1,1^FS
    ^IDR:IMAGE.GRF
    ",
                    GraphHeight * RowRealBytesCount,
                    RowRealBytesCount,
                    textBitmap);
                result = Encoding.Default.GetBytes(text);
                return result;
            }
            #endregion
    
            #region 生成EPL图像打印指令
            private static byte[] getEPLBytes()
            {
                byte[] result = new byte[0];
                byte[] buffer = getBitmapData();
                string text = string.Format("N
    GW{0},{1},{2},{3},{4}
    P
    ",
                    0,
                    0,
                    RowRealBytesCount,
                    GraphHeight,
                    TransferFormat.GetString(buffer));
                result = TransferFormat.GetBytes(text);
                return result;
            }
            #endregion  
    
            #region 生成CPCL图像打印指令
            public static byte[] getCPCLBytes()
            {
                //GRAPHICS Commands  
                //Bit-mapped graphics can be printed by using graphics commands. ASCII hex (hexadecimal) is  
                //used for expanded graphics data (see example). Data size can be reduced to one-half by utilizing the  
                //COMPRESSED-GRAPHICS commands with the equivalent binary character(s) of the hex data. When  
                //using CG, a single 8 bit character is sent for every 8 bits of graphics data. When using EG two characters  
                //(16 bits) are used to transmit 8 bits of graphics data, making EG only half as efficient. Since this data is  
                //character data, however, it can be easier to handle and transmit than binary data.  
                //Format:  
                //{command} {width} {height} {x} {y} {data}  
                //where:  
                //{command}: Choose from the following:  
                //EXPANDED-GRAPHICS (or EG): Prints expanded graphics horizontally.  
                //VEXPANDED-GRAPHICS (or VEG): Prints expanded graphics vertically.  
                //COMPRESSED-GRAPHICS (or CG): Prints compressed graphics horizontally.  
                //VCOMPRESSED-GRAPHICS (or VCG): Prints compressed graphics vertically.  
                //{width}: Byte-width of image.  
                //{height} Dot-height of image.  
                //{x}: Horizontal starting position.  
                //{y}: Vertical starting position.  
                //{data}: Graphics data.  
                //Graphics command example  
                //Input:  
                //! 0 200 200 210 1  
                //EG 2 16 90 45 F0F0F0F0F0F0F0F00F0F0F0F0F0F0F0F  
                //F0F0F0F0F0F0F0F00F0F0F0F0F0F0F0F  
                //FORM  
                //PRINT  
    
                byte[] bmpData = getBitmapData();
                int bmpDataLength = bmpData.Length;
                for (int i = 0; i < bmpDataLength; i++)
                {
                    bmpData[i] ^= 0xFF;
                }
                string textHex = BitConverter.ToString(bmpData).Replace("-", string.Empty);
                string text = string.Format("! {0} {1} {2} {3} {4}
    EG {5} {6} {7} {8} {9}
    FORM
    PRINT
    ",
                    0, //水平偏移量  
                    TcpPrinterDPI, //横向DPI  
                    TcpPrinterDPI, //纵向DPI  
                    (int)(TcpLabelMaxHeightCM / 2.54f * TcpPrinterDPI), //标签最大像素高度=DPI*标签纸高度(英寸)  
                    Copies, //份数  
                    RowRealBytesCount, //图像的字节宽度  
                    GraphHeight, //图像的像素高度  
                    0, //横向的开始位置  
                    0, //纵向的开始位置  
                    textHex
                    );
                return Encoding.UTF8.GetBytes(text);
            }
            #endregion
    
            #region 获取单色位图数据
            /// <summary>  
            /// 获取单色位图数据(1bpp),不含文件头、信息头、调色板三类数据。  
            /// </summary>  
            /// <returns></returns>  
            private static byte[] getBitmapData()
            {
                MemoryStream srcStream = new MemoryStream();
                MemoryStream dstStream = new MemoryStream();
                Bitmap srcBmp = null;
                Bitmap dstBmp = null;
                byte[] srcBuffer = null;
                byte[] dstBuffer = null;
                byte[] result = null;
                try
                {
                    srcStream = new MemoryStream(GraphBuffer);
                    srcBmp = Bitmap.FromStream(srcStream) as Bitmap;
                    srcBuffer = srcStream.ToArray();
                    GraphWidth = srcBmp.Width;
                    GraphHeight = srcBmp.Height;
                    dstBmp = srcBmp.Clone(new Rectangle(0, 0, srcBmp.Width, srcBmp.Height), PixelFormat.Format1bppIndexed);
                    dstBmp.Save(dstStream, ImageFormat.Bmp);
                    dstBuffer = dstStream.ToArray();
    
                    int bfSize = BitConverter.ToInt32(dstBuffer, 2);
                    int bfOffBits = BitConverter.ToInt32(dstBuffer, 10);
                    int bitmapDataLength = bfSize - bfOffBits;
                    result = new byte[GraphHeight * RowRealBytesCount];
    
                    //读取时需要反向读取每行字节实现上下翻转的效果,打印机打印顺序需要这样读取。  
                    for (int i = 0; i < GraphHeight; i++)
                    {
                        Array.Copy(dstBuffer, bfOffBits + (GraphHeight - 1 - i) * RowSize, result, i * RowRealBytesCount, RowRealBytesCount);
                    }
                }
                catch (Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    if (srcStream != null)
                    {
                        srcStream.Dispose();
                        srcStream = null;
                    }
                    if (dstStream != null)
                    {
                        dstStream.Dispose();
                        dstStream = null;
                    }
                    if (srcBmp != null)
                    {
                        srcBmp.Dispose();
                        srcBmp = null;
                    }
                    if (dstBmp != null)
                    {
                        dstBmp.Dispose();
                        dstBmp = null;
                    }
                }
                return result;
            }
            #endregion  
    
            #region 扩展
    
            #region CPCL命令打印24位bmp
            private static string get24BitBmpData(string filePath)
            {
                Bitmap bmp = new Bitmap(filePath);
                byte[] bitArray = { 128, 64, 32, 16, 8, 4, 2, 1 };
                string imgTxt = "";
                Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
                BitmapData data = bmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
                IntPtr firstPix = data.Scan0;
    
                int rowByteCount = bmp.Width * 3;
                int filledCount = data.Stride - rowByteCount;
                int bytes = data.Stride * data.Height;//Math.Ceiling((double)bmp.Width / 8)
                byte[] rgbValues = new byte[bytes];
                System.Runtime.InteropServices.Marshal.Copy(firstPix, rgbValues, 0, bytes);
    
                int printRowByteCount = Convert.ToInt32(Math.Ceiling((double)(bmp.Width) / 8));
                int printRowByteFillCount = 4 - (printRowByteCount % 4);
                //int bitFillCount = 8 - (bmp.Width % 8);
                byte[] printData = new byte[(printRowByteCount + printRowByteFillCount) * bmp.Height];
    
                int byteCount = 0;
                int bitCount = 0;
                int rowPoint = 0;
                for (int i = 0; i < rgbValues.Length; i += 3)
                {
                    int rgbValue = rgbValues[i] + rgbValues[i + 1] + rgbValues[i + 2];
                    if (rgbValue != (255 * 3))
                    {
                        printData[byteCount] = Convert.ToByte(printData[byteCount] | bitArray[bitCount]);
                    }
                    if (bitCount == 7)
                    {
                        bitCount = 0;
                        byteCount++;
                    }
                    else
                    {
                        bitCount++;
                    }
                    if ((rowPoint + 3) == rowByteCount)
                    {
                        rowPoint = 0;
                        if (bitCount > 0)
                        {
                            byteCount++;
                        }
                        bitCount = 0;
                        byteCount += printRowByteFillCount;
                        i = i + filledCount;
                    }
                    else
                    {
                        rowPoint += 3;
                    }
                }
    
                foreach (byte byteData in printData)
                {
                    string hexStr = Convert.ToString(byteData, 16);
                    if (hexStr.Length == 1)
                    {
                        hexStr = '0' + hexStr;
                    }
                    imgTxt += hexStr;
                }
                bmp.UnlockBits(data);
                return imgTxt.ToUpper();
            }
    
            public static void Printer(string bitbmpPath)
            {
                string CRNL = "
    ";
                string imgTxt = get24BitBmpData(bitbmpPath);
                string cmddata = "! 0 200 200 300 1" + CRNL +
                                "EG " + 24 + " " + 50 + " 10 10 " + imgTxt + CRNL +
                                "FORM" + CRNL +
                                "PRINT" + CRNL;
                try
                {
                    string ipAddress = "192.168.1.212";
                    int port = 9100;
    
                    // Open connection
                    System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient();
                    client.Connect(ipAddress, port);
    
                    // Write CPCL String to connection
                    System.IO.StreamWriter writer = new System.IO.StreamWriter(client.GetStream());
                    writer.Write(cmddata);
                    writer.Flush();
    
                    // Close Connection
                    writer.Close();
                    client.Close();
                }
                catch (Exception)
                {
                    // Catch Exception
                }
            }
            #endregion
    
            #endregion
        }
    
        #region 定义设备类型枚举
        public enum DeviceType
        {
            COM = 0,
            LPT = 1,
            DRV = 2,
            TCP = 3
        }
        #endregion
    
        #region 定义打印机指令类型枚举
        public enum ProgrammingLanguage
        {
            ZPL = 0,
            EPL = 1,
            CPCL = 2
        }
        #endregion
    
        #region 定义日志类型枚举
        public enum LogType
        {
            Print = 0,
            Error = 1
        }
        #endregion
    
        #region 定义打印文档信息类
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public class DocInfo
        {
            [MarshalAs(UnmanagedType.LPStr)]
            public string DocName;
            [MarshalAs(UnmanagedType.LPStr)]
            public string OutputFile;
            [MarshalAs(UnmanagedType.LPStr)]
            public string DataType;
        }
        #endregion
    
        #region 定义图像设备信息类
        public class DeviceInfo
        {
            #region 属性说明
            /* 
            ColorDepth  
                图像输出支持的颜色范围的像素深度。有效值为 1、4、8、24 和 32。默认值为 24。仅对 TIFF 呈现支持 ColorDepth,对于其他图像输出格式报表服务器将忽略此设置。 
     
            注意:  
            对于此版本的 SQL Server,此设置的值将被忽略,且通常将 TIFF 图像呈现为 24 位。 
      
            Columns  
                要为报表设置的列数。此值将覆盖报表的原始设置。 
      
            ColumnSpacing  
                要为报表设置的列间距。此值将覆盖报表的原始设置。 
      
            DpiX  
                输出设备在 X 方向的分辨率。默认值为 96。 
      
            DpiY  
                输出设备在 Y 方向的分辨率。默认值为 96。 
      
            EndPage  
                要呈现的报表的最后一页。默认值为 StartPage 的值。 
      
            MarginBottom  
                要为报表设置的下边距值,以英寸为单位。您必须包含一个整数或小数值,后跟“in”(例如,1in)。此值将覆盖报表的原始设置。 
      
            MarginLeft  
                要为报表设置的左边距值,以英寸为单位。您必须包含一个整数或小数值,后跟“in”(例如,1in)。此值将覆盖报表的原始设置。 
      
            MarginRight  
                要为报表设置的右边距值,以英寸为单位。您必须包含一个整数或小数值,后跟“in”(例如,1in)。此值将覆盖报表的原始设置。 
      
            MarginTop  
                要为报表设置的上边距值,以英寸为单位。您必须包含一个整数或小数值,后跟“in”(例如,1in)。此值将覆盖报表的原始设置。 
      
            OutputFormat  
                图形设备接口 (GDI) 支持的输出格式之一:BMP、EMF、GIF、JPEG、PNG 或 TIFF。 
      
            PageHeight  
                要为报表设置的页高,以英寸为单位。您必须包含一个整数或小数值,后跟“in”(例如,11in)。此值将覆盖报表的原始设置。 
      
            PageWidth  
                要为报表设置的页宽,以英寸为单位。您必须包含一个整数或小数值,后跟“in”(例如,8.5in)。此值将覆盖报表的原始设置。 
      
            StartPage  
                要呈现的报告的第一页。值为 0 指示将呈现所有页。默认值为 1。  
             */
            #endregion
    
            public enum GDIOutputFormat { BMP, EMF, GIF, JPEG, PNG, TIFF }
    
            public int ColorDepth { get; set; }
            public int Columns { get; set; }
            public int ColumnSpacing { get; set; }
            public int DpiX { get; set; }
            public int DpiY { get; set; }
            public int EndPage { get; set; }
            public int MarginBottom { get; set; }
            public int MarginLeft { get; set; }
            public int MarginRight { get; set; }
            public int MarginTop { get; set; }
            public GDIOutputFormat OutputFormat { get; set; }
            public int PageHeight { get; set; }
            public int PageWidth { get; set; }
            public int StartPage { get; set; }
    
            private const string xmlFormater = @"<DeviceInfo>  
                    <ColorDepth>{0}</ColorDepth>  
                    <Columns>{1}</Columns>  
                    <ColumnSpacing>{2}</ColumnSpacing>  
                    <DpiX>{3}</DpiX>  
                    <DpiY>{4}</DpiY>  
                    <EndPage>{5}</EndPage>  
                    <MarginBottom>{6}</MarginBottom>  
                    <MarginLeft>{7}</MarginLeft>  
                    <MarginRight>{8}</MarginRight>  
                    <MarginTop>{9}</MarginTop>  
                    <OutputFormat>{10}</OutputFormat>  
                    <PageHeight>{11}</PageHeight>  
                    <PageWidth>{12}</PageWidth>  
                    <StartPage>{13}</StartPage>  
                    </DeviceInfo>";
    
            public DeviceInfo()
            {
                this.ColorDepth = 24;
                this.Columns = 0;
                this.StartPage = 1;
                this.EndPage = 1;
            }
    
            public string GetDeviceInfo()
            {
                string result = string.Format(xmlFormater,
                    this.ColorDepth,
                    this.Columns,
                    this.ColumnSpacing,
                    this.DpiX,
                    this.DpiY,
                    this.EndPage,
                    this.MarginBottom,
                    this.MarginLeft,
                    this.MarginRight,
                    this.MarginTop,
                    this.OutputFormat,
                    this.PageHeight,
                    this.PageWidth,
                    this.StartPage);
                return result;
            }
    
            public string GetDeviceInfoForImage()
            {
                string result = string.Format("<DeviceInfo><StartPage>{0}</StartPage><EndPage>{1}</EndPage><OutputFormat>{2}</OutputFormat><DpiX>{3}</DpiX><DpiY>{4}</DpiY></DeviceInfo>",
                    this.StartPage,
                    this.EndPage,
                    this.OutputFormat,
                    this.DpiX,
                    this.DpiY);
                return result;
            }
        }
        #endregion  
    }

    这个类有很多方法,下面这个就是如何使用这个类,直接看代码吧。

    private void btnPrinter_Click(object sender, EventArgs e)
            {
    
               #region ESC 热敏图像点阵像素点读取打印
    
                //Bitmap bitmap = new Bitmap(@"D:450X100.bmp");
                //NetPOSPrinter netPOSPrinter = new NetPOSPrinter();
                //netPOSPrinter.PrintPic(bitmap);
    
                #endregion
    
                #region EPL USB 打印
                //Bitmap img = new Bitmap(@"D:450X100.bmp");
                //ZebraPrintHelper.PrinterType = DeviceType.DRV;
                //ZebraPrintHelper.PrinterProgrammingLanguage = ProgrammingLanguage.EPL;
                //ZebraPrintHelper.PrinterName = "ZDesigner GK888t (EPL)";
                //byte[] imgByte = ImageToByte.ImgToByt(img);
                //ZebraPrintHelper.PrintGraphics(imgByte);
    
                #endregion
    
                #region ZPL II 打印指令
                //^XA^CFD
                //^POI
                //^LH330,10
                //^FO50,50
                //^FDSMARTDIGITAL^FS
                //^FO50,75
                //^FD021-51871630^FS
                //^XZ
    
                //StringBuilder sb = new StringBuilder();
                //sb.Append("^XA^CFD");
                //sb.Append("^POI");
                //sb.Append("^LH330,10");
                //sb.Append("^FO50,50");
                //sb.Append("^FDSMARTDIGITAL^FS");
                //sb.Append("^FO50,75");
                //sb.Append("^FD021-51871630^FS");
                //sb.Append("^XZ");
    
                //byte[] cmd = Encoding.Default.GetBytes(sb.ToString());
    
                #endregion
    
                #region EPL USB 指令打印
                ZebraPrintHelper.PrinterProgrammingLanguage = ProgrammingLanguage.EPL;
                ZebraPrintHelper.PrinterName = "ZDesigner GK888t (EPL)";
                ZebraPrintHelper.PrinterType = DeviceType.DRV;
                
                string cmd = "N" + "
    " +
                    "Q400,025" + "
    
    " +
                    "A140,45,0,8,1,1,N,"古典黄芥沫调味酱"" + "
    " +
                    "A140,90,0,8,1,1,N,"规格:"" + "
    " +
                    "A240,95,0,4,1,1,N,"" + "100ML/瓶" + """ + "
    " +
                    "A140,135,0,8,1,1,N,"生产日期:"" + "
    " +
                    "A300,140,0,4,1,1,N,"" + "2015-10-02" + """ + "
    " +
                    "B140,180,0,1,3,2,100,B,"" + "8957891234567895789588535" + """ + "
    " +
                    "P1" + "
    ";
    
                ZebraPrintHelper.PrintCommand(cmd.ToString());
                #endregion
            }
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  • 原文地址:https://www.cnblogs.com/linfenghp/p/15154667.html
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