//saving data into the customer table private void Save_Click(object sender, RoutedEventArgs e) { if (string.IsNullOrEmpty(FullName.Text) || string.IsNullOrEmpty(Phone.Text)) { errM.Message = "All Feilds mark with asterisk(*) Are Required"; errM.Show(); } else { CustomerLocgic.AddCustomer(FullName.Text, Phone.Text, Address.Text, Email.Text); sm.Message = "New customer details saved successfully"; sm.Show(); Hide(); //ShowInTaskbar = false; //new AddCustomer().ShowDialog(); } }