private SortedList CreateStudentYearList()
 {
     SortedList sl = new SortedList();
     try
     {
         //constructor for student year
         ActiveDirectoryListHelper hp = new ActiveDirectoryListHelper(this.studentLDAPloc);
         //sorted list (year,array of students)
         sl = hp.GetStudentByYearList();
     }
     catch (Exception e)
     {
         UpdateStatusStrip("Error retrieving AD list");
         string mess = string.Format("{0} Exception caught", e);
         MessageBox.Show(mess, "Error in Profile Delete",
         MessageBoxButtons.OK, MessageBoxIcon.Information);
     }
     return (sl);
 }