private async void saveButton_Click(object sender, RoutedEventArgs e)
        {
            val = new Validation();
            if (val.isEmpty(customerName) || val.isEmpty(vehicelNo) || val.isEmpty(sellingCenter) || val.isEmpty(destination) || val.isEmpty(date.ToString()) ||
                val.isEmpty(driverName) || val.isEmpty(distance.ToString()) || val.isEmpty(arrivalTime.ToString()))
            {
                await this.ShowMessageAsync("Error", "Data Cannot be Empty", MessageDialogStyle.Affirmative);
            }
            else
            {
                int affectedLines = 0;
                transport.CustomerName  = CustomerName.SelectedItem.ToString();
                transport.VehicleNo     = VehicleNo.SelectedItem.ToString();
                transport.DriverName    = DriverName.SelectedItem.ToString();
                transport.Date          = RequestDate.SelectedDate.Value;
                transport.ArrivalTime   = Convert.ToInt32(ArrivalTime.Text);
                transport.Destination   = Desination.Text;
                transport.Distance      = Convert.ToInt32(Distance.Text);
                transport.Income        = Convert.ToInt32(Income.Text);
                transport.SellingCenter = SellingCenter.SelectedValue.ToString();
                try
                {
                    handleDatabase = new HandleDatabase();
                    affectedLines  = handleDatabase.executeTransportaionRequest(transport);

                    if (affectedLines > 0)
                    {
                        await this.ShowMessageAsync("Successfull", "New Entry have been Successfully Registered", MessageDialogStyle.Affirmative);

                        this.Close();
                        MainMenu menu = new MainMenu();
                        menu.Show();
                    }
                    else
                    {
                        await this.ShowMessageAsync("Error", "Sorry Can not Proceed with transportation", MessageDialogStyle.Affirmative);

                        this.Close();
                        MainMenu menu = new MainMenu();
                        menu.Show();
                    }
                }
                catch (SqlException sqlException)
                {
                    Console.WriteLine(sqlException);
                }
            }
        }