Hi
i am create billing system in c# windows application..
- Please tell me Billing System Procedure.
- how to add barcode with products
- how to scan barcode ?
- how to print in crystal report.
- how to export excel and pdf formate.
- how to convert .exe file with security.
- if any one theft my software please security and inform to my email or anything.
so, please tell me or any reference link. please . please tell me as soon as possible.
thank you