public MainWindow()
{
InitializeComponent();
string connectionstring = ConfigurationManager.ConnectionStrings["studentDB.Properties.Settings.StudentDBConnectionString"].ConnectionString;
StudentDataClasses1DataContext dataContext = new StudentDataClasses1DataContext(connectionstring);
students = new StudentClass(dataContext);
SelectUniversityList.ItemsSource = students.AllUniversity();
ShowAllStudentsList.ItemsSource = students.displayAllStudents();
SelectClassList.ItemsSource = students.AllClass();
}
/// <summary>
/// Default constructor
/// </summary>
/// <param name="datcon"></param>
public StudentClass(StudentDataClasses1DataContext datcon) => this.dataContext = datcon;