after Entering the Particular password and username it will lead to the Item Menu which is shown above picture.
in this menu we can add items into the database - we can update the items by searching them in very easy way.
to search item we have to type the name in the search text and it will filter the item in the table.likewise we can remove the item by searching.
all the item id will be automatically generating by the new button.

This is the very important and hardest part to for me in this system.this is the Order menu.all the food item we entering to the database it will stored in this  middle table.
when the Operator needs to find an item he/she can simply select it from the item table.otherwise he can search it by the text box.

this is the customer menu of the system.actually most of the inventory control systems they dont keep their customer details in the system.but in here i suggested to keep whole sale customer details in the database so i created according to my opinion.
this menu also working same as the item menu.
we can navigate the menus by choosing them from the file menu stripe. 

as it shown above it will filter the item according to the name we types in the item search text box.
after item selected from the table'the item name and price will be shown in the particular labels.
after operator needs to enter the quantity and Press Enter will be calculate the total and show.
click add to list will leads to the line item table.

According to the above picture customer have buy 2 items and total is 140.00rs

if its is whole sale customer we can chose from the combo box and
have to select payment method 
if it is Cash we have to give the Paid Amount of the customer to the system and then system will calculate the grand total.
finally by CLicking the Print bill it will provide the bill as it shown below picture.