private void numericupdown_value()
{
numericUpDown1.Maximum = decimal.Parse(D_Gasoline95.ToString());
numericUpDown2.Maximum = decimal.Parse(D_Gasoline97.ToString());
numericUpDown3.Maximum = decimal.Parse(D_Diesel.ToString());
numericUpDown4.Maximum = decimal.Parse(D_euroDiesel.ToString());
numericUpDown5.Maximum = decimal.Parse(D_lpg.ToString());
}
private void txt_tank_write()
{
label6.Text = D_Gasoline95.ToString("N");
label7.Text = D_Gasoline97.ToString("N");
label8.Text = D_Diesel.ToString("N");
label9.Text = D_euroDiesel.ToString("N");
label10.Text = D_lpg.ToString("N");
}