How to create Visual Basic.Net Project, using if statement, events, keyPress event, For Loop, Arithmetic functions and Append data to a Textbox.\r<br>\r<br>How to Create Online Billing Systems in Visual Basic.Net, see link below.\r<br>\r<br>\r<br>\r<br>How to Create Billing System Project in Java NetBeans, see link below.\r<br>\r<br>\r<br>or\r<br>\r<br>\r<br>\r<br>Subscribe for the source code.