C#: Create a Window Forms application that upon loading populates an array with 21 random numbers and then adds each number in the array to a ListBox. The 21 random numbers should be integers in the range of 1 to 100. Additionally, output the highest number, lowest number, average, and median of the 21 random numbers. Whenever the user wants a new set of random numbers, the user can click the New Numbers button which will update the listbox and text boxes.