Send ESC commands to a printer in C#

Question

My application needs to print invoices, then a get the invoice from database, insert information on the invoice in a big string (telling the line, column, etc.) after this I

Answer 1

"....OpenPrinter(printerName.Normalize(), out printerHandle, IntPtr.Zero)..."

might needed to set IntPtr.Zero to raw too.

Printers, especially dot matrix, it can be direct using DOS, CMD method, which much simplest and faster for printing also can using basic ESC/0x1b command codes to controll the printer,. . etc.

as windowos/graphic, it can be graphics and raw by setting openprinter(,,printer_defaults) printer_defaults and doc-inf, pls refer win32 sdk references.

for any raw printing it can uses ESC command (refer to printer manual details) to print any graphic as what windows driver did.

as printing raw, it just append any of the first 20 ascii, such as oxoc(formfeed) 0x0doa(0x0a, 0x0d, \n or newline) each printer has slight ESC commands differences but using the master ESC command is fined for most of Dot matrix similar.

as raw mode example follows, FormFeed , \n & \r

char cFormfeed=0x0c; // or \f

char cStr[]="1=text,......@\n2=text.....\r\f3=text......."; //use \f not using cFormfeed you can work it out

cStr > lpt1; //output to printer dos or cmd method, of cause must get the lpt1 available.

print out will be

first page

1=text,......@

2=text.....

at 2nd page is

3=text.......

hope this can be help, good luck.