private void Convert_Click(object sender, RoutedEventArgs e)
        {
            var _dataFrom = FromConverter.SelectedItem as CurrencyDetail;
            var _dataTo   = ToConverter.SelectedItem as CurrencyDetail;

            if (AmountConverter.Text == "")
            {
                AmountConverter.Focus();
                MessageBox.Show("Enter Amount to Convert");
            }
            else if (FromConverter.SelectedItem == ToConverter.SelectedItem)
            {
                MessageBox.Show("You are Selected Same From Currency and To Currency....");
            }
            else
            {
                double _enteredAmount     = Convert.ToDouble(AmountConverter.Text);
                double _fromCurrencyRate  = Convert.ToDouble(_dataFrom.CurrencyRate);
                double _toCurrencyRate    = Convert.ToDouble(_dataTo.CurrencyRate);
                double _convertedCurrency = Math.Round(((_enteredAmount * _toCurrencyRate) / _fromCurrencyRate), 3);
                //MessageBox.Show(string.Format("{0:0.00}",_convertedCurrency));
                BeforeConvertedCurrency.Content = _enteredAmount.ToString() + " " + _dataFrom.CurrencyAbbrevation;
                t1.Visibility = Visibility.Visible;
                AfterConvertedCurrency.Content = _convertedCurrency.ToString() + " " + _dataTo.CurrencyAbbrevation;
                FromConvert.Content            = "1 " + _dataFrom.CurrencyAbbrevation;
                double _oneConverCurrency = Math.Round((_toCurrencyRate / _fromCurrencyRate), 3);
                t2.Visibility     = Visibility.Visible;
                ToConvert.Content = _oneConverCurrency.ToString() + " " + _dataTo.CurrencyAbbrevation;
            }
        }