一、EPL II 格式及打印测试
注意N命令前的换行和最后P1后的换行。将此段代码复制到windows记事本里另存为Print.ext，文件名随便，后缀为ext。然后通过cmd控制命令行输入"copy c:\print.ext COM1”。然后就可以看到打印机开始打印了，效果不错。
N
B300,5,0,1,2,3,40,N,"1234567891123"
A160,55,0,8,1,1,N,"ALP-122244444444"
b420,100,Q,"DATAdfdgdfgdf"
P1
- 说明书上说N命令开始前要先输入一行空白行，
原文：Always send a Line Feed (LF) prior to the N command to ensure that previous data in the command buffer has cleared and the printer is in i tial ized and ready to ac cept com mands. - P命令之后也要加一个空白行，即回车，不然最后的P命令要打印的东西是不打印的，之前的P命令由于有后面的命令，间接等于换行了，所以会照打不误。
- 说明书上写P命令是Pp1, [p2]，其参数p1是Number of label sets，而参数p2是Number of copies of each label (used in combination with counters to print multiple copies of the same label).
但我试验下来p1就是要打印的条码的重复次数，而p2无论我怎么改写都没有变换，始终打印最后一个条码。应该是我哪里写错了。但是多用几次P1，每次打一条还是可以起到同样的打印多条条码的效果的。
下面，给出我打印的条码的例子：
N
B60,5,0,1,2,3,40,N,"1234567891123"
A60,55,0,8,1,1,N,"ALP-1"
P1
B60,5,0,1,2,3,40,N,"1234567890123"
A60,55,0,8,1,1,N,"ALP-2"
P1
B60,5,0,1,2,3,40,N,"1234567890123"
A60,55,0,8,1,1,N,"ALP-3"
P1
发送到打印机测试：
NET USE LPT1 /DELETE
NET USE LPT1 \\192.168.2.166\zetl /persistent:yes
copy c:\1.txt lpt1
copy c:\1.txt \\192.168.2.167\zetl
二、使用API发送内容进行打印：
private void button1_Click_1(object sender, EventArgs e)
{
string txt = textBox1.Text;
LPTControl lpt = new LPTControl();
//string cmd = System.IO.File.ReadAllText("zplII.txt");//zplII.txt里写了条码机的命令 string cmd = Environment.NewLine + "N" + Environment.NewLine
+ "B60,5,0,1,2,3,40,N,\"1234567891123\"" + Environment.NewLine + "A60,55,0,8,1,1,N,\"ALP-5\"" + Environment.NewLine + "P1" + Environment.NewLine
+ "B60,5,0,1,2,3,40,N,\"1234567891123\"" + Environment.NewLine + "A60,55,0,8,1,1,N,\"ALP-6\"" + Environment.NewLine + "P1" + Environment.NewLine
+ "B60,5,0,1,2,3,40,N,\"1234567891123\"" + Environment.NewLine + "A60,55,0,8,1,1,N,\"ALP-7\"" + Environment.NewLine + "P1" + Environment.NewLine; if (!lpt.Open())
{
throw new Exception("未能连接打印机，请确认打印机是否安装正确并接通电源。");
}
lpt.Write(cmd);
if (!lpt.Close())
{
if (!lpt.Open())
{
throw new Exception("未能连接打印机，请确认打印机是否安装正确并接通电源。");
}
}
} public class LPTControl
{
[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 nNumberOfBytesToWrite,
out int lpNumberOfBytesWritten,
out OVERLAPPED lpOverlapped
); [DllImport("kernel32.dll")]
private static extern bool CloseHandle(
int hObject
); private int iHandle; public bool Open()
{
iHandle = CreateFile("lpt1:", 0x40000000, 0, 0, 3, 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);
}
}