C# 打印Label
程序实现：注意首先添加引用：Lppx2.tlb （codesoft安装后文件中）
这种方式直接使用打印机机器指令进行打印，调用系统串口或并口实现。
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
using System.IO.Ports;
using System.Data;
using System.Windows.Forms;
namespace PrintLabel
{
public class PrintLabel
{
//读取文件内容#region //读取文件内容
//获取需要打印的文本！
public bool GetContent(DataTable dt, out string fileContent)
{
string strFileName = "";
if (dt.Rows.Count == 0)
{
fileContent = "Has no label information !";
return false;
}
for (int i = 0; i < dt.Columns.Count; i++)
{
if (dt.Columns[i].ColumnName.ToUpper().IndexOf("LABELFILE") > -1)
{
strFileName = dt.Rows[0]["LabelFile"].ToString();
break;
}
}
if (strFileName == "")
{
fileContent = "Can not find label file name !";
return false;
}
string strFilePath = Application.StartupPath + @"\" + strFileName;
if (!File.Exists(strFilePath))
{
fileContent = "Can not find label file template" + strFilePath + " !";
return false;
}
StreamReader sr = new StreamReader(strFilePath, System.Text.Encoding.GetEncoding("gb2312"));
string strFileContent = sr.ReadToEnd();
sr.Close();
try
{
int iRow = 0;
int iCol = 0;
int iRows = 0;
iRows = dt.Rows.Count;
for (; iRow < iRows; iRow++)
{
if (iRow == 0)
{
for (; iCol < dt.Columns.Count; iCol++)
{
strFileContent = strFileContent.Replace("<" + dt.Columns[iCol].ColumnName.ToUpper() + ">", dt.Rows[iRow][iCol].ToString());
}
}
else
{
for (iCol = 0; iCol < dt.Columns.Count; iCol++)
{
strFileContent = strFileContent.Replace("<" + dt.Columns[iCol].ColumnName.ToUpper() + iRow.ToString() + ">", dt.Rows[iRow][iCol].ToString());
}
}
}
for (int iDelRow = iRows; iDelRow < 100; iDelRow++)
{
for (int iDelCol = 0; iDelCol < dt.Columns.Count; iDelCol++)
{
if (strFileContent.IndexOf("<" + dt.Columns[iDelCol].ColumnName.ToUpper() + iDelRow.ToString() + ">") > -1)
{
strFileContent = strFileContent.Replace("<" + dt.Columns[iDelCol].ColumnName.ToUpper() + iDelRow.ToString() + ">", "<DELETELINE>");
}
}
}
string[] strLineArray = System.Text.RegularExpressions.Regex.Split(strFileContent, "\r\n"); //利用正则表达式来分解
strFileContent = "";
int j = 1;
foreach (string strLine in strLineArray)
{
if (strLine.IndexOf("<DELETELINE>") > -1)
{
continue;
}
if (j == 1)
{
strFileContent = strLine;
j = j + 1;
}
else
{
strFileContent = strFileContent + "\r\n" + strLine;
j = j + 1;
}
}
fileContent = strFileContent;
return true;
}
catch (Exception ex)
{
fileContent = ex.Message;
return false;
}
}
#endregion
//调用CodeSoft打印,首先添加引用：Lppx2.tlb（codesoft安装后文件中）#region //调用CodeSoft打印,首先添加引用：Lppx2.tlb（codesoft安装后文件中）
//打印函数，参数为打印机的命令或者其他文本！
public bool CSWrite(DataTable dt, out string Msg)
{
string strFileName = "";
if (dt.Rows.Count == 0)
{
Msg = "Has no label information !";
return false;
}
for (int i = 0; i < dt.Columns.Count; i++)
{
if (dt.Columns[i].ColumnName.ToUpper().IndexOf("LABELFILE") > -1)
{
strFileName = dt.Rows[0]["LabelFile"].ToString();
break;
}
}
if (strFileName == "")
{
Msg = "Can not find label file name !";
return false;
}
string strFilePath = Application.StartupPath + @"\" + strFileName.Replace(".txt", ".lab").Replace(".TXT", ".lab");
if (!File.Exists(strFilePath))
{
Msg = "Can not find label file template" + strFilePath + " !";
return false;
}
LabelManager2.ApplicationClass lbl = new LabelManager2.ApplicationClass();
try
{
lbl.Documents.Open(strFilePath, false);// 调用设计好的label文件
LabelManager2.Document doc = lbl.ActiveDocument;
int iRow = 0;
int iCol = 0;
int iRows = 0;
iRows = dt.Rows.Count;
for (; iRow < iRows; iRow++)
{
if (iRow == 0)
{
for (; iCol < dt.Columns.Count; iCol++)
{
try
{
doc.Variables.FormVariables.Item(dt.Columns[iCol].ColumnName.ToUpper()).Value = dt.Rows[iRow][iCol].ToString(); //给参数传值
}
catch (Exception ex1)
{
continue; //Codesoft文档中如没有该变量则跳出本次循环
}
}
}
else
{
for (iCol = 0; iCol < dt.Columns.Count; iCol++)
{
try
{
doc.Variables.FormVariables.Item(dt.Columns[iCol].ColumnName.ToUpper() + iRow.ToString()).Value = dt.Rows[iRow][iCol].ToString(); //给参数传值
}
catch (Exception ex2)
{
continue; //Codesoft文档中如没有该变量则跳出本次循环
}
}
}
}
int Num = 1; //打印数量
for (int j = 0; j < dt.Columns.Count; j++)
{
if (dt.Columns[j].ColumnName.ToUpper().IndexOf("LABELNUM") > -1)
{
Num = Convert.ToInt32((dt.Rows[0]["LabelNum"].ToString()));
break;
}
}
doc.PrintDocument(Num); //打印
Msg = "Pass";
return true;
}
catch (Exception ex)
{
Msg = ex.Message;
return false;
}
finally
{
lbl.Quit(); //退出
}
}
#endregion
//串口打印#region //串口打印
//打印函数，参数为打印机的命令或者其他文本！
public bool COMWrite(string portName, int baudRate, Parity parity, int dataBits, StopBits stopBits, string myString)
{
try
{
SerialPort ComPort = new SerialPort(portName, baudRate, parity, dataBits, stopBits);
if (ComPort.IsOpen)
{
ComPort.Close();
}
ComPort.Open();
ComPort.WriteLine(myString);
ComPort.Close();
return true;
}
catch (Exception ex)
{
return false;
}
}
#endregion
//并口打印#region //并口打印
[StructLayout(LayoutKind.Sequential)]
private struct OVERLAPPED
{
int Internal;
int InternalHigh;
int Offset;
int OffSetHigh;
int hEvent;
}
[DllImport("kernel32.dll")]
private static extern int CreateFile(string lpFileName, uint dwDesiredAccess, int dwShareMode, int lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile);
[DllImport("kernel32.dll")]
private static extern bool WriteFile(int hFile, byte[] lpBuffer, int nNumberOfBytesToWriter, out int lpNumberOfBytesWriten, out OVERLAPPED lpOverLapped);
[DllImport("kernel32.dll")]
private static extern bool CloseHandle(int hObject);
private int iHandle;
//打开LPT 端口
public bool LPTOpen()
{
iHandle = CreateFile("lpt1", 0x40000000, 0, 0, 3, 0, 0);
if (iHandle != -1)
{
return true;
}
else
{
return false;
}
}
//打印函数，参数为打印机的命令或者其他文本！
public bool LPTWrite(string myString)
{
if (!LPTOpen()) { return false; }
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);
if (WriteFile(iHandle, mybyte, mybyte.Length, out i, out x))
{
LPTClose();
return true;
}
else
{
return false;
}
}
else
{
throw new Exception("端口未打开~！");
return false;
}
}
//关闭打印端口
public bool LPTClose()
{
return CloseHandle(iHandle);
}
#endregion
}
}
private bool PrintModuleLabel(DataTable dt)
{
string fileMsg;
if (PrintLabel.GetContent(dt,out fileMsg)==false)
{
MessageBox.Show(fileMsg, "Module Buffer", MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
if (rdoCOMPort.Checked==true)
{
string portName=cboPortName.Text.ToString().Trim();
int baudRate=Convert.ToInt32(cboBaudRate.Text.ToString().Trim());
Parity parity=Parity.None;
int dataBits=Convert.ToInt32(cboDataBits.Text.ToString().Trim());
StopBits stopBits;
switch (cboStopBits.Text.ToString().Trim())
{
case "1":
stopBits = StopBits.One;
break;
case "2":
stopBits = StopBits.Two;
break;
case "None":
stopBits = StopBits.None;
break;
default:
stopBits = StopBits.One;
break;
}
if (PrintLabel.COMWrite(portName,baudRate,parity,dataBits,stopBits,fileMsg)==false)
{
MessageBox.Show("COM Port Error !", "Module Buffer", MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
else
{
return true;
}
}
else if(rdoLPTPort.Checked==true)
{
if (PrintLabel.LPTWrite(fileMsg)==false)
{
MessageBox.Show("LPT Port Error !", "Module Buffer", MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
else
{
return true;
}
}
else
{
string Msg;
if (PrintLabel.CSWrite(dt,out Msg)==false)
{
MessageBox.Show(Msg, "Module Buffer", MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
else
{
return true;
}
}
}