原来写过一篇C#打印条码与ZPL, 是打印到本地的打印机, 但是往往会需要程序使用远程的打印机进行打印,  其实基本上做法是一致的, 只是把命令发送到打印机的地方修改一下. 具体发送指令的代码微软已经提供了完整的范本: http://support.microsoft.com/kb/322091, 其实只要看一个这篇文章, 基本上就不会有问题了, 不过为了防止以后链接失效, 还是演练一下吧:

在IP地址172.16.8.1 上安装一台打印机, 名为”Argox OS-214 Zip”, 并将其共享, 在开发机上打开\\172.16.8.1, 会看到共享的打印机, 右击—>然后open或connect, 都会自动安装此打印机的驱动到本地, 安装完成以后, 新建一个windows form application,  新增一个类, 然后删除这个新类的所有代码, 把以下代码复制过去:

using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.IO;public class RawPrinterHelper
{// Structure and API declarions:[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]public class DOCINFOA{[MarshalAs(UnmanagedType.LPStr)]public string pDocName;[MarshalAs(UnmanagedType.LPStr)]public string pOutputFile;[MarshalAs(UnmanagedType.LPStr)]public string pDataType;}[DllImport("winspool.Drv", EntryPoint = "OpenPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]public static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string szPrinter, out IntPtr hPrinter, IntPtr pd);[DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]public static extern bool ClosePrinter(IntPtr hPrinter);[DllImport("winspool.Drv", EntryPoint = "StartDocPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]public static extern bool StartDocPrinter(IntPtr hPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] DOCINFOA di);[DllImport("winspool.Drv", EntryPoint = "EndDocPrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]public static extern bool EndDocPrinter(IntPtr hPrinter);[DllImport("winspool.Drv", EntryPoint = "StartPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]public static extern bool StartPagePrinter(IntPtr hPrinter);[DllImport("winspool.Drv", EntryPoint = "EndPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]public static extern bool EndPagePrinter(IntPtr hPrinter);[DllImport("winspool.Drv", EntryPoint = "WritePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]public static extern bool WritePrinter(IntPtr hPrinter, IntPtr pBytes, Int32 dwCount, out Int32 dwWritten);// SendBytesToPrinter()// When the function is given a printer name and an unmanaged array// of bytes, the function sends those bytes to the print queue.// Returns true on success, false on failure.public static bool SendBytesToPrinter(string szPrinterName, IntPtr pBytes, Int32 dwCount){Int32 dwError = 0, dwWritten = 0;IntPtr hPrinter = new IntPtr(0);DOCINFOA di = new DOCINFOA();bool bSuccess = false; // Assume failure unless you specifically succeed.di.pDocName = "My C#.NET RAW Document";di.pDataType = "RAW";// Open the printer.if (OpenPrinter(szPrinterName.Normalize(), out hPrinter, IntPtr.Zero)){// Start a document.if (StartDocPrinter(hPrinter, 1, di)){// Start a page.if (StartPagePrinter(hPrinter)){// Write your bytes.bSuccess = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten);EndPagePrinter(hPrinter);}EndDocPrinter(hPrinter);}ClosePrinter(hPrinter);}// If you did not succeed, GetLastError may give more information// about why not.if (bSuccess == false){dwError = Marshal.GetLastWin32Error();}return bSuccess;}public static bool SendFileToPrinter(string szPrinterName, string szFileName){// Open the file.FileStream fs = new FileStream(szFileName, 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(szPrinterName, pUnmanagedBytes, nLength);// Free the unmanaged memory that you allocated earlier.Marshal.FreeCoTaskMem(pUnmanagedBytes);return bSuccess;}public static bool SendStringToPrinter(string szPrinterName, string szString){IntPtr pBytes;Int32 dwCount;// How many characters are in the string?dwCount = szString.Length;// Assume that the printer is expecting ANSI text, and then convert// the string to ANSI text.pBytes = Marshal.StringToCoTaskMemAnsi(szString);// Send the converted ANSI string to the printer.SendBytesToPrinter(szPrinterName, pBytes, dwCount);Marshal.FreeCoTaskMem(pBytes);return true;}
}

然后在我们的form1上拖一个按钮, 双击此按钮进行点击事件, 贴入以下代码:

        private void button1_Click(object sender, EventArgs e){var sb = new System.Text.StringBuilder();sb.AppendLine("^XA ");sb.AppendLine("^FO30,30");sb.AppendLine("^FDHello World!^FS");sb.AppendLine("^XZ ");string printerName = @"\\172.16.8.1\Argox OS-214 Zip";RawPrinterHelper.SendStringToPrinter(printerName, sb.ToString());}

F5运行, 点击按钮, 会看到打印机已经打印了一个Hello world出来, 打完收工.