How to send a not selected value in a list box to string

[jay419]

I'm trying to make a scheduling tool for my major at my school and I have a CourseEntryForm, RemainingCoursesForm and CoursesCompeltedForm.

The CourseEntryForm has list boxes of courses that are required for graduation. I have been able to send the selected values of these list boxes to rich text boxes in the CoursesCompletedForm, however I need the courses that have not been selected in the list boxes to be sent to string that I can use in rich text boxes in the RemainingCoursesForm.

I have tried using:

Ex:
ListBox.Items.ToString(RemainingCourses)

when RemainingCourses is declared as string. I have also tried If statements to try to assign it, but I can never get it to work properly. I really need some help. This is a culminating class project and our professor didn't go over all the materal needed to do something of this volume.

I have also attached the file of the actual program to be able to use the real code if that would help be able to fix the problem better.

Thanks in advance!

[Guido Geurs]

@jay419
dear,

I have downloaded your project but this is no VB4,5,6 project !?
Please redirect it to VB.net.

br,