I wanted to have this coded using LINQ:
A car dealer wants an application that let customers build their own dream car. 
Create a Windows Forms Application and set the form title as Online Car Dealer. The application should display all the items in four different ListBoxs. Those ListBoxs should retrieve the data from BuildYourCar database and display the category separately (Body Type, Wheel, Package, and Accessories). The user can choose only one item from Body Type, Wheel, and Package categories and multiple items from Accessories. All the selections will be displayed in a separated Listbox and the price will be added to the subtotal. The user will be able to remove items from the textbox and the price will be deduced from the subtotal as well.
The program should display Subtotal, Tax (6.5%), and Total fields in the GUI. Also, create a button that user can click the Clear Button to clear the display box and restore the Subtotal, Tax, and Total to $0.00. 
Use the BuildYourCar database. Save the project as DreamCar_YOUR_NAME.