private void BtnDeleteSupplier(object sender, RoutedEventArgs e)
{
DataAcces da = new DataAcces();
Supplier s = new Supplier();
s.SupplierID = Int32.Parse(txtSupId.Text);
string msg = da.DeleteSupplier(s);
MessageBox.Show("" + msg);
if (msg.Equals("Supplier Discontinued"))
{
MainWindow mw = Application.Current.Windows.OfType <MainWindow>().FirstOrDefault();
if (mw != null)
{
mw.MainFrame.Content = new ManageSuppliers();
}
}
}