The code performs one overall task: compute the mean of all scores in the class, and set the color each seat according to its value.
The operation is broken down into these steps:
Examine each text box in the classroom, and:
collect its current value
convert the value to an integer
assign the value to the corresponding element in the 2-D ‘scores’ array
add the value to a ‘total ‘score variable
Divide the ‘total’ of the scores by the number of seats to obtain the mean
Display mean score value on the screen in output text box
Visit each text box in the classroom, and
Determine the proper color for the seat based on its value and calculated mean:
If less than mean, color is red
If between mean and 90%, color is yellow
If greater than 90%, color is green
Set background color of seat textbox to the proper color
Note: The ‘Tag’ property of each seat’s textbox was set to string “Seat<r><c>” at design time (manually), to reflect the row/column position of the seat. This allows us to tell seats apart and relate them to row/column positions in the 2-D scores array. The FindBox() method implements this functionality.
