Create an application named AutomobileDemo that prompts a user for data for eight Automobile objects. The Automobile class includes auto-implemented properties for ID number, make, year, and price. Override the ToString() method to return all the details for an Automobile. During data entry, reprompt the user if any ID number is a dublicate. Sort the objects in ID number order, and display all their data as well as a total of all their prices.

Using microsoft visual c# windows form app.