title: C# POS fast receipt printing
body: <p>I'd like to print the receipt of my POS application (Winform C#)
  My first attempt is using crystal report, but it's no fast enough when there're many customers in line, even some of them will leave the line.
  So I have idea to print in DOS mode. I create a dummy file and send it to PRN.
  It's working well, fast enough but then I have a thought.. Is there any other better way to do? I mean it's not by creating a dummy file first, but print line by line from C# itself?
  of course it must be fast.</p>
  
  <p>Thanks in advance..</p>