.net控制斑马Zebra打印机源码实例

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;
using System.Management;

using System.Drawing.Printing;
using System.Collections;
using System.Runtime.InteropServices;
using System.Threading; 

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //USB打印支持属于Win32_USBHub类
            SelectQuery selectQuery = new SelectQuery("Win32_USBHub");
            ManagementObjectSearcher searcher = new ManagementObjectSearcher(selectQuery);
            foreach (ManagementObject disk in searcher.Get())
            {
                string PNPDeviceID = disk["PNPDeviceID"] as String;
                BeginPrint(this.txtNum.Text.Trim(), PNPDeviceID);
            }  
            MessageBox.Show("OK");
        }
        public class Printer
        {
            [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
            private struct OVERLAPPED { int Internal; int InternalHigh; int Offset; int OffSetHigh; int hEvent;      }
            [System.Runtime.InteropServices.DllImport("kernel32.dll")]
            private static extern int CreateFile(string lpFileName, uint dwDesiredAccess, int dwShareMode, int lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile);
            [System.Runtime.InteropServices.DllImport("kernel32.dll")]
            private static extern bool WriteFile(int hFile, byte[] lpBuffer, int nNumberOfBytesToWrite, out   int lpNumberOfBytesWritten, out   OVERLAPPED lpOverlapped);
            [System.Runtime.InteropServices.DllImport("kernel32.dll")]
            private static extern bool CloseHandle(int hObject);
            private int iHandle; 

            public bool Open(string PNPDeviceID)
            {
                //{A5DCBF10-6530-11D2-901F-00C04FB951ED}是USB设备类的classID
                iHandle = CreateFile("\\\\.\\"   PNPDeviceID.Replace('\\', '#')   "#{A5DCBF10-6530-11D2-901F-00C04FB951ED}"
                    , (uint)FileAccess.ReadWrite, 0, 0, (int)FileMode.Open, 0, 0);  
                if (iHandle != -1)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            public bool Write(string Mystring)
            {
                if (iHandle != -1)
                {
                    int i; OVERLAPPED x; 
                    byte[] mybyte = System.Text.Encoding.Default.GetBytes(Mystring);
                    return WriteFile(iHandle, mybyte, mybyte.Length, out i, out x);
                }
                else { throw new Exception("端口未打开!"); }
            }
            public bool Close()
            {
                return CloseHandle(iHandle);
            }
        }

        private void BeginPrint(string cmd, string PNPDeviceID)
        {
            var printer = new Printer();
            if (!printer.Open(PNPDeviceID))
            { return; }
            printer.Write(cmd);
            if (!printer.Close())
            { return; }
        }
          
    }
}