Create powerful goodlooking easy project with windows form application using oled coding in c#. After learn easy step you will cover pass parameter , null handling code, fill data using loop structures.very useful events,  adding assembly. Ect. Project designed in user friendly way so at the starting or home page you can see menu item  showing 3 menu. First is item menu where you can create new item second sales form where you can make sales. Third is for billing related information.