private void SwitchDateTimeClick(object sender, EventArgs e)
        {
            if (s_shipment_time.Focusable == false && s_shipping_date.Focusable == false)
            {
                s_shipment_time.Focusable = true;
                s_shipment_time.Enabled   = true;
                LInputTime.SetBackgroundColor(Color.ParseColor("#FFFFFF"));

                s_shipping_date.Focusable = true;
                s_shipping_date.Enabled   = true;
                LInputDate.SetBackgroundColor(Color.ParseColor("#FFFFFF"));
            }
            else
            {
                s_shipment_time.Focusable = false;
                s_shipment_time.Enabled   = false;
                LInputTime.SetBackgroundColor(Color.ParseColor("#E6E3E3"));
                s_shipment_time.Text = "";

                s_shipping_date.Focusable = false;
                s_shipping_date.Enabled   = false;
                LInputDate.SetBackgroundColor(Color.ParseColor("#E6E3E3"));
                s_shipping_date.Text = "";
            }
        }
 private void SwitchContactPersonClick(object sender, EventArgs e)
 {
     if (s_contact_person.Visibility == ViewStates.Invisible)
     {
         s_contact_person.Visibility = ViewStates.Visible;
         LInputContactPerson.SetBackgroundColor(Color.ParseColor("#FFFFFF"));
     }
     else
     {
         s_contact_person.Visibility = ViewStates.Invisible;
         s_contact_person.Text       = "";
         LInputContactPerson.SetBackgroundColor(Color.ParseColor("#E6E3E3"));
     }
 }
        //    private void callDatePicker()
        //    {
        //        // получаем текущую дату
        //        Calendar cal = new Calendar();
        //        var mYear = cal.GetYear(DateTime.Now);
        //        var mMonth = cal.GetMonth(DateTime.Now);
        //        var mDay = cal.GetDayOfWeek(DateTime.Now);

        //        // инициализируем диалог выбора даты текущими значениями
        //        DatePickerDialog datePickerDialog = new DatePickerDialog(this,
        //                new DatePickerDialog.OnDateSetListener() {
        //                @Override
        //                    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
        //        {
        //            String editTextDateParam = dayOfMonth + "." + (monthOfYear + 1) + "." + year;
        //            editTextDate.setText(editTextDateParam);
        //        }
        //    }, mYear, mMonth, mDay);
        //    datePickerDialog.show();
        //}
        private void SwitchCargoInsuranceClick(object sender, EventArgs e)
        {
            if (s_value.Visibility == ViewStates.Invisible)
            {
                s_value.Visibility = ViewStates.Visible;
                LInputCargoInsurance.SetBackgroundColor(Color.ParseColor("#FFFFFF"));
            }
            else
            {
                s_value.Visibility = ViewStates.Invisible;
                s_value.Text       = "";
                LInputCargoInsurance.SetBackgroundColor(Color.ParseColor("#E6E3E3"));
            }
        }
        private void Spinner_ItemSelected(object sender, AdapterView.ItemSelectedEventArgs e)
        {
            var spinner = sender as Spinner;

            a_cargo_characteristic = spinner.GetItemAtPosition(e.Position).ToString();

            if (a_cargo_characteristic != "Тарно-штучные")
            {
                s_height.Enabled    = false;
                s_width.Enabled     = false;
                s_length.Enabled    = false;
                s_sum_seats.Enabled = false;

                s_height.Text    = "0";
                s_sum_seats.Text = "1";
                s_width.Text     = "0";
                s_length.Text    = "0";

                s_size.Enabled = true;
                SizeInputLayout.SetBackgroundColor(Color.Transparent);

                //s_size.Visibility = ViewStates.Visible;
                //s_size.TextChanged += S_size_TextChanged
            }
            else
            {
                s_height.Enabled    = true;
                s_width.Enabled     = true;
                s_length.Enabled    = true;
                s_sum_seats.Enabled = true;
                s_size.Enabled      = false;
                SizeInputLayout.SetBackgroundResource(Resource.Drawable.StyleInputLayout);
                //s_size.Focusable = false;
                //s_size.Clickable = false;
                //s_size.Enabled = false;
                //s_size.Visibility = ViewStates.Invisible;
                //SizeInputLayout.SetBackgroundResource(Resource.Drawable.StyleInputLayout);
            }
        }