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VB .Net GUI to calculate order amounts

Hello I need assistance in completing the following problem in Visual Basic:

The application should calculate and display the order amounts and the grand total in Label control. The clear button must clear all text boxes and calculated labels. The exit button must close the window.

Input validation: Make sure the number of units for each package is numeric, and is not negative.

Use the following test data to determine if the application is calculating properly.

Units sold:
Package A: 15 Units
Package B: 75 Units
Package C: 120 Units

Amount of Order
Package A: $1188.00
Package B: $8955.00
Package C: $17,940.00
Grand total: $28,083.00

Solution Summary

The solution consists of a VB.Net application to take number of orders and calculate the individual order amount and their grand total.