Open the Computer Workshop Solution (Computer Workshop Solution.sln) file contained in t...

Open the Computer Workshop Solution (Computer Workshop Solution.sln) file contained in the VbReloaded2010\Chap05\ Computer Workshop Solution folder. Computer Workshop offers programming seminars to companies. The price per person depends on the number of people the company registers. The price for the first 10 registrants is $80 per person. The price for the through 25^th registrants is $70 per person. Starting with the 26^th registrant, the price per person is $65. Therefore, if the company registers seven people, the total cost is $560. If the company registers 12 people, the total cost is $940. If the company registers 26 people, the total cost is $1,915. Display the total cog (formatted with a dollar sign and no decimal places) in the totalLabel. The number should accept only numbers and the Backspace key. No calculations should be made when the number is empty; rather, display an appropriate message. Save the solution and then start and test the application. Close the solution.