in c# Visual studio

This program will input a set of test results consisting of students names and test grades. Each time the Add button is clicked, the student name and the corresponding test score are stored in arrays. However, before the name is added to the array of names, the program will search through the list to see if the name is already there. If a matching name is found, a message box is displayed saying that the name is already in the list. Otherwise, the name is added to the array and the score is also stored in its array.

When the Show button is clicked, the program will find the largest test score in the array. It will then subtract this largest test score from 100 and get the curve amount. It will then add the curve amount to each of the test scores to get the new (curved) test scores. The program will then display the test scored in a large, multi-line text box. Each line will be one student name and the curved test score for that student. This textbox should be read-only and it should have a vertical scroll bar.

Note that the program should use separate arrays for the original test scores and the curved test scores. That way, if a new student is added after the show button is clicked, the scores can be recalculated. You may use arrays with a large size or if you would rather use a list instead of an array, you may do that instead.

You may want to use the \t and the as you add lines of names and test scores to the output textbox. You may also consider using the PadLeft() and PadRight() methods to format the output. Note that Courier New font makes it easier to have columns line up in a multiline textbox. Please try to make it easily readable.

please post designer and design code

Grade Normalizer Student Name Test Grade Add Show