private void ShowResults_Click(object sender, RoutedEventArgs e)
{
// This scenario uses the Windows.Globalization.Calendar class to enumerate through a calendar and
// perform calendar math
StringBuilder results = new StringBuilder();
results.AppendLine("The number of years in each era of the Japanese era calendar is not regular. " +
"It is determined by the length of the given imperial era:");
results.AppendLine();
// Create Japanese calendar.
Calendar calendar = new Calendar(new[] { "en-US" }, CalendarIdentifiers.Japanese, ClockIdentifiers.TwentyFourHour);
// Enumerate all supported years in all supported Japanese eras.
for (calendar.Era = calendar.FirstEra; true; calendar.AddYears(1))
{
// Process current era.
results.AppendLine("Era " + calendar.EraAsString() + " contains " + calendar.NumberOfYearsInThisEra + " year(s)");
// Enumerate all years in this era.
for (calendar.Year = calendar.FirstYearInThisEra; true; calendar.AddYears(1))
{
// Begin sample processing of current year.
// Move to first day of year. Change of month can affect day so order of assignments is important.
calendar.Month = calendar.FirstMonthInThisYear;
calendar.Day = calendar.FirstDayInThisMonth;
// Set time to midnight (local).
calendar.Period = calendar.FirstPeriodInThisDay; // All days have 1 or 2 periods depending on clock type
calendar.Hour = calendar.FirstHourInThisPeriod; // Hours start from 12 or 0 depending on clock type
calendar.Minute = 0;
calendar.Second = 0;
calendar.Nanosecond = 0;
if (calendar.Year % 1000 == 0)
{
results.AppendLine();
}
else if (calendar.Year % 10 == 0)
{
results.Append(".");
}
// End sample processing of current year.
// Break after processing last year.
if (calendar.Year == calendar.LastYearInThisEra)
{
break;
}
}
results.AppendLine();
// Break after processing last era.
if (calendar.Era == calendar.LastEra)
{
break;
}
}
results.AppendLine();
// This section shows enumeration through the hours in a day to demonstrate that the number of time units in a given period (hours in a day, minutes in an hour, etc.)
// should not be regarded as fixed. With Daylight Saving Time and other local calendar adjustments, a given day may have not have 24 hours, and
// a given hour may not have 60 minutes, etc.
results.AppendLine("The number of hours in a day is not constant. " +
"The US calendar transitions from daylight saving time to standard time on 4 November 2012:\n");
// Create a DateTimeFormatter to display dates
DateTimeFormatter displayDate = new DateTimeFormatter("longdate");
// Create a gregorian calendar for the US with 12-hour clock format
Calendar currentCal = new Windows.Globalization.Calendar(new string[] { "en-US" }, CalendarIdentifiers.Gregorian, ClockIdentifiers.TwentyFourHour, "America/Los_Angeles");
// Set the calendar to a the date of the Daylight Saving Time-to-Standard Time transition for the US in 2012.
// DST ends in the America/Los_Angeles time zone at 4 November 2012 02:00 PDT = 4 November 2012 09:00 UTC.
DateTime dstDate = new DateTime(2012, 11, 4, 9, 0, 0, DateTimeKind.Utc);
currentCal.SetDateTime(dstDate);
// Set the current calendar to one day before DST change. Create a second calendar for comparision and set it to one day after DST change.
Calendar endDate = currentCal.Clone();
currentCal.AddDays(-1);
endDate.AddDays(1);
// Enumerate the day before, the day of, and the day after the 2012 DST-to-Standard time transition
while (currentCal.Day <= endDate.Day)
{
// Process current day.
DateTimeOffset date = currentCal.GetDateTime();
results.AppendFormat("{0} contains {1} hour(s)\n", displayDate.Format(date), currentCal.NumberOfHoursInThisPeriod);
// Enumerate all hours in this day.
// Create a calendar to represent the following day.
Calendar nextDay = currentCal.Clone();
nextDay.AddDays(1);
for (currentCal.Hour = currentCal.FirstHourInThisPeriod; true; currentCal.AddHours(1))
{
// Display the hour for each hour in the day.
results.AppendFormat("{0} ", currentCal.HourAsPaddedString(2));
// Break upon reaching the next period (i.e. the first period in the following day).
if (currentCal.Day == nextDay.Day && currentCal.Period == nextDay.Period)
{
break;
}
}
results.AppendLine();
}
// Display results
OutputTextBlock.Text = results.ToString();
}
/// <summary>
/// This is the click handler for the 'Default' button.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Display_Click(object sender, RoutedEventArgs e)
{
// This scenario uses the Windows.Globalization.Calendar class to enumerate through a calendar and
// perform calendar math
StringBuilder results = new StringBuilder();
results.AppendLine("The number of years in each era of the Japanese era calendar is not regular. It is determined by the length of the given imperial era:\n");
// Create Japanese calendar.
Calendar calendar = new Calendar(new[] { "en-US" }, CalendarIdentifiers.Japanese, ClockIdentifiers.TwentyFourHour);
// Enumerate all supported years in all supported Japanese eras.
for (calendar.Era = calendar.FirstEra; true; calendar.AddYears(1))
{
// Process current era.
results.AppendLine("Era " + calendar.EraAsString() + " contains " + calendar.NumberOfYearsInThisEra + " year(s)");
// Enumerate all years in this era.
for (calendar.Year = calendar.FirstYearInThisEra; true; calendar.AddYears(1))
{
// Begin sample processing of current year.
// Move to first day of year. Change of month can affect day so order of assignments is important.
calendar.Month = calendar.FirstMonthInThisYear;
calendar.Day = calendar.FirstDayInThisMonth;
// Set time to midnight (local).
calendar.Period = calendar.FirstPeriodInThisDay; // All days have 1 or 2 periods depending on clock type
calendar.Hour = calendar.FirstHourInThisPeriod; // Hours start from 12 or 0 depending on clock type
calendar.Minute = 0;
calendar.Second = 0;
calendar.Nanosecond = 0;
if (calendar.Year % 1000 == 0)
{
results.AppendLine();
}
else if (calendar.Year % 10 == 0)
{
results.Append(".");
}
// End sample processing of current year.
// Break after processing last year.
if (calendar.Year == calendar.LastYearInThisEra)
{
break;
}
}
results.AppendLine();
// Break after processing last era.
if (calendar.Era == calendar.LastEra)
{
break;
}
}
// This section shows enumeration through the hours in a day to demonstrate that the number of time units in a given period (hours in a day, minutes in an hour, etc.)
// should not be regarded as fixed. With Daylight Saving Time and other local calendar adjustments, a given day may have not have 24 hours, and
// a given hour may not have 60 minutes, etc.
results.AppendLine("\nThe number of hours in a day is not invariable. The US calendar transitions from DST to standard time on 4 November 2012:\n");
// Create a DateTimeFormatter to display dates
DateTimeFormatter displayDate = new Windows.Globalization.DateTimeFormatting.DateTimeFormatter("longdate");
// Create a gregorian calendar for the US with 12-hour clock format
Calendar currentCal = new Windows.Globalization.Calendar(new string[] { "en-US" }, CalendarIdentifiers.Gregorian, ClockIdentifiers.TwentyFourHour, "america/los_angeles");
// Set the calendar to a the date of the Daylight Saving Time-to-Standard Time transition for the US in 2012.
// DST ends in the US at 02:00 on 4 November 2012
DateTime dstDate = new DateTime(2012, 11, 4);
currentCal.SetDateTime(dstDate);
// Set the current calendar to one day before DST change. Create a second calendar for comparision and set it to one day after DST change.
Calendar endDate = currentCal.Clone();
currentCal.AddDays(-1);
endDate.AddDays(1);
// Enumerate the day before, the day of, and the day after the 2012 DST-to-Standard time transition
while (currentCal.Day <= endDate.Day)
{
// Process current day.
DateTimeOffset date = currentCal.GetDateTime();
results.AppendFormat("{0} contains {1} hour(s)\n", displayDate.Format(date), currentCal.NumberOfHoursInThisPeriod);
// Enumerate all hours in this day.
// Create a calendar to represent the following day.
Calendar nextDay = currentCal.Clone();
nextDay.AddDays(1);
for (currentCal.Hour = currentCal.FirstHourInThisPeriod; true; currentCal.AddHours(1))
{
// Display the hour for each hour in the day.
results.AppendFormat("{0} ", currentCal.HourAsPaddedString(2));
// Break upon reaching the next period (i.e. the first period in the following day).
if (currentCal.Day == nextDay.Day && currentCal.Period == nextDay.Period)
{
break;
}
}
results.AppendLine();
}
// Display results
OutputTextBlock.Text = results.ToString();
}