无法使用 CPCL 将土耳其语字符从 Xamarin.Forms 应用程序打印到 Zebra 移动打印机

Question

I am trying to print from a Xamarin.Forms application to Zebra ZQ220 mobile printer over bluetooth.

I installed Zebra.Printer.SDK version 2.15.2634 and i am able to print.

For Turkish character printing, i stored the font file SWISS721 in Zebra printer, and i am able to print Turkish characters via Zebra Setup Utilities / Open Communication With Printer / Direct Communication using my CPCL code, which is below.

! 0 200 200 500 1
PCX 0 1 !<NRPLOGO.PCX
T SWF12.CPF 0 125 180  şŞ iİ üÜ ğĞ öÖ çÇ
T SWF08.CPF 0 1 225 Tarih : 01.01.2022     Makbuz No : NTQ4NzIzNTM=
PRINT

In Xamarin.Forms application, according to Zebra documentation, i created a string to store CPCL like below:

private const string RealTestLabelCpclSwiss = "! 0 200 200 500 1\r\n"
+ "PCX 0 1 !<NRPLOGO.PCX\r\n"
+ "T SWF12.CPF 0 125 180  şŞ iİ üÜ ğĞ öÖ çÇ\r\n"
+ "T SWF08.CPF 0 1 225 Tarih : 01.01.2022     Makbuz No : NTQ4NzIzNTM=\r\n"
+ "PRINT\r\n";

To send this string to printer, this needs to be converted to a byte array, and Zebra documentation uses UTF8 encoding like below:

return Encoding.UTF8.GetBytes(RealTestLabelCpclSwiss);

I can print to printer but Turkish characters like şŞ İ Ğ are not printed correctly.

I assume this is an encoding issue, and i need to use maybe a different encoding, tried the encodings below:

return Encoding.Default.GetBytes(RealTestLabelCpclSwiss);

return Encoding.ASCII.GetBytes(RealTestLabelCpclSwiss);

Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
return Encoding.GetEncoding(1254).GetBytes(RealTestLabelCpclSwiss);

return Encoding.GetEncoding("ISO-8859-9").GetBytes(RealTestLabelCpclSwiss);

But still i can't print Turkish characters with Xamarin.Forms.

My test device is an iPhone and i also checked the west checkbox in iOS project properties / iOS Build / Internationalization.

How can i correct this encoding issue with Xamarin.Forms?

Answer 1

I resolved the issue. I used

Encoding.GetEncoding("iso-8859-9")

instead of

Encoding.GetEncoding("ISO-8859-9")

and i am able to print Turkish characters.

I didn't know this encoding name is case sensitive.