Visual basic.net

First Button Click Event: Using a Do Loop with a Sentinel value of -1 ask the user to type in the list of courses they have completed (ex: MA110). As they enter the courses, display the courses in a listbox.

Second Button Click Event: Once the course listbox has been populated, the user will select a course from the listbox that will be converted into a new string using the guidelines given below.

This event must validate that a course has been selected from the listbox before the process of generating the new string coded name can be done.

If a course has been selected, that name should be read into the program and converted to code as follows:

All letters are converted to lower case. All vowels within the string should be removed. Replace numbers should be converted as follows: 1 will become an exclamation point (!) 2 will become the letter z (lower case) 3 will become the letter E (upper case) 4 & 8 will become dollar signs ($) 5 will become the letter S (upper case) 6 & 7 will become ampersands (&) 0 & 9 will become letter o (lower case). Once the coded course name has been created, it is to be displayed in the output textbox.