AI_Project_3.MainPage.addButton_Click C# (CSharp) Method

        private void addButton_Click(object sender, RoutedEventArgs e)
        {
            majorinit.AddToListOfAddedMajors((majorinit.Majors.Majors[this.MajorList.SelectedIndex]));

            String a = "";
            foreach (string s in majorinit.listOfAddedMajors)
            {
                a = s + " " + a;
            }

            if (majorinit.listOfAddedMajors.Count > 0)
            {
                this.MajorButton1.Content = "[X]  " + majorinit.listOfAddedMajors[0];
                this.MajorButton1.Visibility = Visibility.Visible;

                if (majorinit.listOfAddedMajors.Count > 1)
                {
                    this.MajorButton2.Content = "[X]  " + majorinit.listOfAddedMajors[1];
                    this.MajorButton2.Visibility = Visibility.Visible;
                }
            }
        }