C# 4 and .NET 4

576 ❘ ChaPTer 22 lOcAlizAtiOn
Next you get the calendar information about the culture. The Calendar property of the CultureInfo class
returns the default Calendar object for the specific culture. Because the Calendar class doesn’t have a
property to tell its name, you use the ToString() method of the base class to get the name of the class, and
remove the namespace of this string to be displayed in the text field textCalendar.
Because a single culture might support multiple calendars, the OptionalCalendars property returns an
array of additional supported Calendar objects. These optional calendars are displayed in the list box
listCalendars. The GregorianCalendar class that derives from Calendar has an additional property called
CalendarType that lists the type of the Gregorian calendar. This type can be a value of the enumeration
GregorianCalendarTypes: Arabic, MiddleEastFrench, TransliteratedFrench, USEnglish, or
Localized, depending on the culture. With Gregorian calendars, the type is also displayed in the list box:
// default calendar
textCalendar.Text = ci.Calendar.ToString().
Remove(0, 21).Replace("Calendar", "");
// fill optional calendars
listCalendars.Items.Clear();
foreach (Calendar optCal in ci.OptionalCalendars)
{
StringBuilder calName = new StringBuilder(50);
calName.Append(optCal.ToString());
calName.Remove(0, 21);
calName.Replace("Calendar", "");
}
// for GregorianCalendar add type information
GregorianCalendar gregCal = optCal as GregorianCalendar;
if (gregCal != null)
{
calName.AppendFormat(" {0}", gregCal.CalendarType.ToString());
}
listCalendars.Items.Add(calName.ToString());
code snippet CultureDemo/MainWindow.xaml.cs
Next, you check whether the culture is a specific culture (not a neutral culture) by using !ci
.IsNeutralCulture in an if statement. The method ShowSamples() displays number and date samples.
This method is implemented in the next code section. The method ShowRegionInformation() is used to
display some information about the region. With the invariant culture, you can display only number and
date samples, but no region information. The invariant culture is not related to any real language,
and therefore it is not associated with a region:
// display number and date samples
if (!ci.IsNeutralCulture)
{
groupSamples.IsEnabled = true;
ShowSamples(ci);
// invariant culture doesn't have a region
if (String.Compare(ci.ThreeLetterISOLanguageName, "IVL", true) == 0)
{
groupRegion.IsEnabled = false;
}
else
{
groupRegion.IsEnabled = true;
ShowRegionInformation(ci.Name);
}
}
else // neutral culture: no region, no number/date formatting
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