public double?ParseDouble(string text) => _formatter.ParseDouble(ValidateInput(text));
/// <summary>
/// This is the click handler for the 'Display' button.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Display_Click(object sender, RoutedEventArgs e)
{
// This scenario uses the Windows.Globalization.NumberFormatting.DecimalFormatter,
// Windows.Globalization.NumberFormatting.CurrencyFormatter and
// Windows.Globalization.NumberFormatting.PercentFormatter classes to format and parse a number
// percentage or currency.
// Keep results of the scenario in a StringBuilder
StringBuilder results = new StringBuilder();
// Define percent formatters.
PercentFormatter percentFormat = new PercentFormatter();
PercentFormatter percentFormatJP = new PercentFormatter(new string[] { "ja" }, "ZZ");
PercentFormatter percentFormatFR = new PercentFormatter(new string[] { "fr-FR" }, "ZZ");
// Define decimal formatters.
DecimalFormatter decimalFormat = new DecimalFormatter();
decimalFormat.IsGrouped = true;
DecimalFormatter decimalFormatJP = new DecimalFormatter(new string[] { "ja" }, "ZZ");
decimalFormatJP.IsGrouped = true;
DecimalFormatter decimalFormatFR = new DecimalFormatter(new string[] { "fr-FR" }, "ZZ");
decimalFormatFR.IsGrouped = true;
// Define currency formatters
string userCurrency = GlobalizationPreferences.Currencies[0];
CurrencyFormatter currencyFormat = new CurrencyFormatter(userCurrency);
CurrencyFormatter currencyFormatJP = new CurrencyFormatter("JPY", new string[] { "ja" }, "ZZ");
CurrencyFormatter currencyFormatFR = new CurrencyFormatter("EUR", new string[] { "fr-FR" }, "ZZ");
// Generate numbers for parsing.
double percentNumber = 0.523;
double decimalNumber = 12345.67;
double currencyNumber = 1234.56;
// Roundtrip the percent numbers by formatting and parsing.
String percent1 = percentFormat.Format(percentNumber);
double percent1Parsed = percentFormat.ParseDouble(percent1).Value;
String percent1JP = percentFormatJP.Format(percentNumber);
double percent1JPParsed = percentFormatJP.ParseDouble(percent1JP).Value;
String percent1FR = percentFormatFR.Format(percentNumber);
double percent1FRParsed = percentFormatFR.ParseDouble(percent1FR).Value;
// Generate the results for percent parsing.
results.AppendLine("Percent parsing of " + percentNumber);
results.AppendLine("Formatted for current user: "******" Parsed as current user: "******"Formatted for ja-JP: " + percent1JP + " Parsed for ja-JP: " + percent1JPParsed);
results.AppendLine("Formatted for fr-FR: " + percent1FR + " Parsed for fr-FR: " + percent1FRParsed);
results.AppendLine();
// Roundtrip the decimal numbers for formatting and parsing.
String decimal1 = decimalFormat.Format(decimalNumber);
double decimal1Parsed = decimalFormat.ParseDouble(decimal1).Value;
String decimal1JP = decimalFormatJP.Format(decimalNumber);
double decimal1JPParsed = decimalFormatJP.ParseDouble(decimal1JP).Value;
String decimal1FR = decimalFormatFR.Format(decimalNumber);
double decimal1FRParsed = decimalFormatFR.ParseDouble(decimal1FR).Value;
// Generate the results for decimal parsing.
results.AppendLine("Decimal parsing of " + decimalNumber);
results.AppendLine("Formatted for current user: "******" Parsed as current user: "******"Formatted for ja-JP: " + decimal1JP + " Parsed for ja-JP: " + decimal1JPParsed);
results.AppendLine("Formatted for fr-FR: " + decimal1FR + " Parsed for fr-FR: " + decimal1FRParsed);
results.AppendLine();
// Roundtrip the currency numbers for formatting and parsing.
String currency1 = currencyFormat.Format(currencyNumber);
double currency1Parsed = currencyFormat.ParseDouble(currency1).Value;
String currency1JP = currencyFormatJP.Format(currencyNumber);
double currency1JPParsed = currencyFormatJP.ParseDouble(currency1JP).Value;
String currency1FR = currencyFormatFR.Format(currencyNumber);
double currency1FRParsed = currencyFormatFR.ParseDouble(currency1FR).Value;
// Generate the results for decimal parsing.
results.AppendLine("Currency parsing of " + currencyNumber);
results.AppendLine("Formatted for current user: "******" Parsed as current user: "******"Formatted for ja-JP: " + currency1JP + " Parsed for ja-JP: " + currency1JPParsed);
results.AppendLine("Formatted for fr-FR: " + currency1FR + " Parsed for fr-FR: " + currency1FRParsed);
results.AppendLine();
// Display the results.
OutputTextBlock.Text = results.ToString();
}
