分享程序员开发的那些事...
更新时间：2021-09-27 17:04:59
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public class POSPrinter
{
const int OPEN_EXISTING = 3;
string prnPort = "LPT1";
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr CreateFile(string lpFileName,
int dwDesiredAccess,
int dwShareMode,
int lpSecurityAttributes,
int dwCreationDisposition,
int dwFlagsAndAttributes,
int hTemplateFile);
public POSPrinter()
{
}
public POSPrinter(string prnPort)
{
this.prnPort = prnPort;//打印机端口
}
public string PrintLine(string str)
{
IntPtr iHandle = CreateFile(prnPort, 0x50000000, 0, 0, OPEN_EXISTING, 0, 0);
if (iHandle.ToInt32() == -1)
{
Console.WriteLine(iHandle.ToString());
return "没有连接打印机或者打印机端口不是LPT1";
}
else
{
Console.WriteLine(iHandle.ToString());
FileStream fs = new FileStream(iHandle, FileAccess.ReadWrite);
StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default);
sw.WriteLine(" 小票单");
sw.WriteLine();
sw.WriteLine(str);
sw.WriteLine("打印内容");
sw.WriteLine("---------------------------");
sw.Close();
fs.Close();
return "打印成功!";
}
}
}
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直接调用PrintLine（）;方法进行打印具体需要的参数和打印格式大家自行调整
本文转自左正博客园博客，原文链接：http://www.cnblogs.com/soundcode/p/8044651.html，如需转载请自行联系原作者