private void Button_Click(object sender, RoutedEventArgs e)
{
string NameOfCompany = textbox1.Text;
string PhoneNumber = textbox2.Text;
Shipper shipper = new Shipper();
var shipper1 = new ShipperViewModel(shipper);
shipper1.CompanyName = NameOfCompany;
shipper1.Phone = PhoneNumber;
textbox1.Text = String.Empty;
textbox2.Text = String.Empty;
if(shipper1.CompanyName == null || shipper1.CompanyName == "" )
return;
MessageBox.Show("You added a shipper");
NORTHWNDEntities1 entities = new NORTHWNDEntities1();
entities.Shippers.Add(shipper);
entities.SaveChanges();
}