{
public MainWindow()
{
InitializeComponent();
///打印调用
ClsPrintLPT printLPT = new ClsPrintLPT();
printLPT.PrintESC(0); //打印前退纸
printLPT.PrintDataSet();
printLPT.PrintESC(1); //打印后进纸
}
}
class ClsPrintLPT
{
private IntPtr iHandle;
private FileStream fs;
private StreamWriter sw;
private string prnPort = "COM1"; //打印机端口(COM开头为串口，LPT开头为并口)，看打印机是什么端口而定
public ClsPrintLPT()
{
}
private const uint GENERIC_READ = 0x80000000;
private const uint GENERIC_WRITE = 0x40000000;
private const int OPEN_EXISTING = 3;
/// <summary>
/// 打开一个vxd(设备)
/// </summary>
[DllImport("kernel32.dll", EntryPoint = "CreateFile", CharSet = CharSet.Auto)]
private static extern IntPtr CreateFile(string lpFileName, uint dwDesiredAccess, int dwShareMode, int lpSecurityAttributes,
int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile);
/// <summary>
/// 开始连接打印机
/// </summary>
private bool PrintOpen()
{
iHandle = CreateFile(prnPort, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
if (iHandle.ToInt32() == -1)
{
MessageBox.Show("没有连接打印机或者打印机端口不是COM1！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return false;
}
else
{
fs = new FileStream(iHandle, FileAccess.ReadWrite);
sw = new StreamWriter(fs, System.Text.Encoding.Default); //写数据
return true;
}
}
// <summary>
/// 打印字符串
/// </summary>
/// <param name="str">要打印的字符串</param>
private void PrintLine(string str)
{
sw.WriteLine(str); ;
}
/// <summary>
/// 关闭打印连接
/// </summary>
private void PrintEnd()
{
sw.Close();
fs.Close();
}
/// <summary>
/// 打印票据
/// </summary>
/// <param name="ds">tb_Temp 全部字段数据集合</param>
/// <returns>true：打印成功 false：打印失败</returns>
public bool PrintDataSet(DataSet dsPrint)
{
try
{
if (PrintOpen())
{
PrintLine(" ");
PrintLine("[XXXXXXXXXXXXXXXXXX超市]");
PrintLine("NO : " + dsPrint.Tables[0].Rows[0][1].ToString());
PrintLine("XXXXXX: " + dsPrint.Tables[0].Rows[0][2].ToString());
PrintLine("XXXXXX: " + dsPrint.Tables[0].Rows[0][3].ToString());
PrintLine("XXXXXX: " + dsPrint.Tables[0].Rows[0][4].ToString());
PrintLine("XXXXXX: " + dsPrint.Tables[0].Rows[0][5].ToString());
PrintLine("操 作 员: " + dsPrint.Tables[0].Rows[0][6].ToString() + " " + dsPrint.Tables[0].Rows[0][7].ToString());
PrintLine("-------------------------------------------");
}
PrintEnd();
return true;
}
catch
{
return false;
}
}
public bool PrintDataSet()
{
try
{
if (PrintOpen())
{
PrintLine(" ");
PrintLine("测试");
PrintLine("-------------------------------------------");
}
PrintEnd();
return true;
}
catch
{
return false;
}
}
/// <summary>
/// ESC/P 指令
/// </summary>
/// <param name="iSelect">0：退纸命令 1：进纸命令 2：换行命令</param>
public void PrintESC(int iSelect)
{
string send;
iHandle = CreateFile(prnPort, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
if (iHandle.ToInt32() == -1)
{
MessageBox.Show("没有连接打印机或者打印机端口不是LPT1！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
fs = new FileStream(iHandle, FileAccess.ReadWrite);
}
byte[] buf = new byte[80];
switch (iSelect)
{
case 0:
send = "" + (char)(27) + (char)(64) + (char)(27) + 'j' + (char)(255); //退纸1 255 为半张纸长
send = send + (char)(27) + 'j' + (char)(125); //退纸2
break;
case 1:
send = "" + (char)(27) + (char)(64) + (char)(27) + 'J' + (char)(255); //进纸
break;
case 2:
send = "" + (char)(27) + (char)(64) + (char)(12); //换行
break;
default:
send = "" + (char)(27) + (char)(64) + (char)(12); //换行
break;
}
for (int i = 0; i < send.Length; i++)
{
buf[i] = (byte)send[i];
}
fs.Write(buf, 0, buf.Length);
fs.Close();
}
}
这是转别人的，原文地址：http://blog.csdn.net/pfworld/article/details/2084666
转载自原文链接, 如需删除请联系管理员。
原文链接：C# 串口、并口 打印机控制，转载请注明来源！