Windows Mobile 5.0下蓝牙移动打印测试(二)

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.IO.Ports;

namespace BluetoothTest
{
    public class Printer
    {
        SerialPort server = new SerialPort();
        private string _portName = " COM6 " ; // 蓝牙一般默认为com6


        /// <summary>
        /// 获取或设置端口名称
        /// </summary>
        public string PortName
        {
            get
            {
                _portName = server.PortName;
                return _portName;
            }
            set
            {
                _portName = value;
                server.PortName = _portName;
            }
        }
        /// <summary>
        /// 端口是否已经打开
        /// </summary>
        public bool IsOpen
        {
            get
            {
                return server.IsOpen;
            }
        }
        /// <summary>
        /// 构造方法初始化串口参数
        /// </summary>
        public Printer()
        { // 初始化各个参数
            server.BaudRate = 9600 ; // 波特率
            server.Parity = 0 ; // 校检位
            server.DataBits = 8 ; // 数据位
            server.StopBits = StopBits.One; // 停止位
            server.PortName = _portName; // 端口名称
            server.WriteTimeout = - 1 ; // 超时时间
            server.ReadTimeout = - 1 ; // 超时时间
        }
        /// <summary>
        /// 打开端口
        /// </summary>
        /// <returns></returns>
        public bool OpenPort()
        {
            try
            {
                if ( ! server.IsOpen)
                { // 关闭的
                    server.Open();
                }
                else
                { // 打开的
                    // server.Close();
                    // server.Open();
                }
                return true ;
            }
            catch (Exception ex)
            { return false ; }
        }
        /// <summary>
        /// 发送数据
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public bool SendDataToPort( string str, out string mes)
        {
            try
            {
                byte [] OutBuffer; // 数据

                int BufferSize;
                Encoding targetEncoding;

               



                // 将[UNICODE编码]转换为[GB码]，仅使用于简体中文版mobile
                targetEncoding = Encoding.GetEncoding( 0 );    // 得到简体中文字码页的编码方式，因为是简体中文操作系统，参数用0就可以，用936也行。
                BufferSize = targetEncoding.GetByteCount(str); // 计算对指定字符数组中的所有字符进行编码所产生的字节数          
                OutBuffer = new byte [BufferSize];
                OutBuffer = targetEncoding.GetBytes(str);       // 将指定字符数组中的所有字符编码为一个字节序列,完成后outbufer里面即为简体中文编码

                byte [] cmdData = new byte [BufferSize + 100 ];

                // 初始化打印机
                cmdData[ 0 ] = 0x1B ;
                cmdData[ 1 ] = 0x40 ;
                // 设置字符顺时旋转180度
                cmdData[ 2 ] = 0x1B ;
                cmdData[ 3 ] = 0x56 ;
                cmdData[ 4 ] = 0 ;


                for ( int i = 0 ; i < BufferSize; i ++ )
                {
                    cmdData[ 5 + i] = OutBuffer[i];
                }


                // 向打印机发送[GB码]数据
                server.Write(cmdData, 0 , BufferSize + 5 );
                // server.WriteLine(str);

                // 初始化指令1B 40
                cmdData[ 0 ] = 0x1B ;
                cmdData[ 1 ] = 0x40 ;
                // 打印并走纸指令
                cmdData[ 2 ] = 0x1B ;
                cmdData[ 3 ] = 0x64 ;
                cmdData[ 4 ] = 0x02 ;

                server.Write(cmdData, 0 , 5 );
                mes = "" ;
                return true ;
            }
            catch (Exception ex)
            {
                mes = ex.Message;
                return false ;
            }
        }
        /// <summary>
        /// 十六进制转换字节数组
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        private byte [] HexStringToByteArray( string s)
        {
            s = s.Replace( " " , "" );
            byte [] buffer = new byte [s.Length / 2 ];
            for ( int i = 0 ; i < s.Length; i += 2 )
                buffer[i / 2 ] = ( byte )Convert.ToByte(s.Substring(i, 2 ), 16 );
            return buffer;
        }
        /// <summary>
        /// 字节数组转换十六进制
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        private string ByteArrayToHexString( byte [] data)
        {
            StringBuilder sb = new StringBuilder(data.Length * 3 );
            foreach ( byte b in data)
                sb.Append(Convert.ToString(b, 16 ).PadLeft( 2 , ' 0 ' ).PadRight( 3 , ' ' ));
            return sb.ToString().ToUpper();
        }

        public void ClosePort()
        {
            server.Close();           
        }
       
    }
}

3.接下在项目窗体上的使用，看看下面的代码：

 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace BluetoothTest
{
public partial class frmMain : Form
{
public frmMain()
{
InitializeComponent();
}
Printer printer = new Printer();
private void menuItem4_Click(object sender, EventArgs e)
{
//退出
printer.ClosePort();
Application.Exit();
}

private void menuItem2_Click(object sender, EventArgs e)
{
//打印
if (tbxBody.Text.Length == 0)
return;

setEnabled(false);
if (!printer.IsOpen)//只有在端口关闭的时候才能设置
printer.PortName = drpPort.GetItemText(drpPort.SelectedItem);
if (!printer.OpenPort())
{
MessageBox.Show("无法打开端口" + drpPort.GetItemText(drpPort.SelectedItem));
}
string mes = "";
if (!printer.SendDataToPort(tbxBody.Text,out mes))
{
MessageBox.Show("发送数据失败" + drpPort.GetItemText(drpPort.SelectedItem) + " " + mes);
}

setEnabled(true);

}
private void setEnabled(bool b)
{
menuItem1.Enabled = b;
menuItem3.Enabled = b;
}
private void frmMain_Load(object sender, EventArgs e)
{
//初始化
drpPort.SelectedIndex = 1;
}
}
}