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sending data to a printer via serial port

Hi,

This apparently is a common problem and I've yet to read a solution that
actually works for my specific situation.

I have a Zebra RW220 printer that I connect to via Bluetooth connection
mapped to a serial port. The application I'm writing runs on a Windows Mobile
5 device, so there's no built in printer support and I have to use a serial
port.

When I try to write the zpl code to the serial port, the printer simply
prints the code verbatum. In other words, it does not 'interpret' the code,
but instead, prints it out on the label instead of printing the barcode as
instructed in the zpl code.

I've tried sending the string value containing all of the zpl code to the
serial port using the serial port .Write() and .WriteLine() methods. I've
also tried converting the string value to a byte array and sending that.
Neither way works.

My backup plan was to create the barcode as an image and send the image, but
if I can't send anything but text to the printer, then the printer seems
rather useless to me as a c# developer.

Zebra's manuals say to compile the zpl code into a text file and send via a
command prompt (copy file to serial port), which is equivalent to using the
Send File menu command in Hypertext Terminal. When the device is connected to
my desktop, I can do that fine, but this is a manual process and I want to
automate this.

I could purchase a third-party library or control that would allow me to do
this rather simply, but I want to learn how this is done so I don't have to
rely on a third-party application.

Any help is greatly appreciated.

Thanks,

Charlie
Aug 2 '08 #1
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