VisualBasic How to add quantities and display them in a ListBox?

[Stephen_28]

Hi,
I am currently working on a VB form for a college assignment. I am trying to add quantities from a ListBox and then display the result in a TextBox for a pizza delivery order by using a button. So far, the Listbox shows:
pizza type
Quantity
pizza price
Total pizza price

The Total pizza price is the value that I want to add together and then show in a TextBox as an Order Price.

This is my form and Code for the button:

The code is a work in progress and as you can see it has only added together the last pizza price with itself. I need to make it add each "Total_pizza_price" that appears in the list instead of only the last item.

Answers and solutions will be much appreciated,
Thank you.

[ddanbe]

Try To write a method that extracts the last price from a listbox item.
Sum those prices in a loop and fill in the text of your textbox.

[Santanu.Das]

You can do it by using a STRUCTUREwhich can give you full functionality to solve your problem.

Read this post you can get your way to solve the problem by yourself.

[ibagyei]

You need a global variable which is outside the subroutine to represent the Total_pizza_price. This will enable you to add the individual prices to Total_pizza_price but it has to be set to zero at the beginning of of the subroutine, so that anytime you start to process a new order, the previous price will be cleared and the variable for Total_pizza_price will be set to zero.

[Stephen_28]

Im having trouble understanding how to write the code... I should mention that I am at a very begginer level and don't know a lot about coding yet. I appreciate everyone trying to help :) Is there any way you can explain more about the solution.

[Santanu.Das]

Post your codes and problems where from we can help you to solve your problem.