private void SaveButton_Click(object sender, RoutedEventArgs e)
{
NABAEntities4 db = new NABAEntities4();
Person obj = new Person();
obj.Id = Convert.ToInt32(db.People.Count());
obj.Firstname = FirstName.Text;
obj.Lastname = LastName.Text;
db.People.Add(obj);
db.SaveChanges();
this.Close();
}
private void Display_Click(object sender, RoutedEventArgs e)
{
NABAEntities4 db = new NABAEntities4();
DataDisplay.ItemsSource = db.People.ToList();
}