public static iCalTimeZone FromSystemTimeZone(System.TimeZoneInfo tzinfo)
{
var adjustmentRules = tzinfo.GetAdjustmentRules();
var utcOffset = tzinfo.BaseUtcOffset;
var dday_tz = new iCalTimeZone();
foreach (var adjustmentRule in adjustmentRules)
{
var delta = adjustmentRule.DaylightDelta;
dday_tz.TZID = tzinfo.Id;
var dday_tzinfo_standard = new DDay.iCal.Components.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.Start = adjustmentRule.DateStart;
if (dday_tzinfo_standard.Start.Year < 1800)
{
dday_tzinfo_standard.Start = dday_tzinfo_standard.Start.AddYears(1800 - dday_tzinfo_standard.Start.Year);
}
dday_tzinfo_standard.TZOffsetFrom = new DDay.iCal.DataTypes.UTC_Offset(utcOffset + delta);
dday_tzinfo_standard.TZOffsetTo = new DDay.iCal.DataTypes.UTC_Offset(utcOffset);
PopulateiCalTimeZoneInfo(dday_tzinfo_standard, adjustmentRule.DaylightTransitionEnd, adjustmentRule.DateStart.Year);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
var dday_tzinfo_daylight = new DDay.iCal.Components.iCalTimeZoneInfo();
dday_tzinfo_daylight.Name = "DAYLIGHT";
dday_tzinfo_daylight.Start = adjustmentRule.DateStart;
if (dday_tzinfo_daylight.Start.Year < 1800)
{
dday_tzinfo_daylight.Start = dday_tzinfo_daylight.Start.AddYears(1800 - dday_tzinfo_daylight.Start.Year);
}
dday_tzinfo_daylight.TZOffsetFrom = new DDay.iCal.DataTypes.UTC_Offset(utcOffset);
dday_tzinfo_daylight.TZOffsetTo = new DDay.iCal.DataTypes.UTC_Offset(utcOffset + delta);
PopulateiCalTimeZoneInfo(dday_tzinfo_daylight, adjustmentRule.DaylightTransitionStart, adjustmentRule.DateStart.Year);
// Add the "daylight" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_daylight);
}
return(dday_tz);
}
public static iCalTimeZone FromSystemTimeZone(System.TimeZoneInfo tzinfo)
{
var adjustmentRules = tzinfo.GetAdjustmentRules();
var utcOffset = tzinfo.BaseUtcOffset;
var dday_tz = new iCalTimeZone();
foreach (var adjustmentRule in adjustmentRules)
{
var delta = adjustmentRule.DaylightDelta;
dday_tz.TZID = tzinfo.Id;
var dday_tzinfo_standard = new DDay.iCal.Components.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.Start = adjustmentRule.DateStart;
if (dday_tzinfo_standard.Start.Year < 1800)
dday_tzinfo_standard.Start = dday_tzinfo_standard.Start.AddYears(1800 - dday_tzinfo_standard.Start.Year);
dday_tzinfo_standard.TZOffsetFrom = new DDay.iCal.DataTypes.UTC_Offset(utcOffset + delta);
dday_tzinfo_standard.TZOffsetTo = new DDay.iCal.DataTypes.UTC_Offset(utcOffset);
PopulateiCalTimeZoneInfo(dday_tzinfo_standard, adjustmentRule.DaylightTransitionEnd, adjustmentRule.DateStart.Year);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
var dday_tzinfo_daylight = new DDay.iCal.Components.iCalTimeZoneInfo();
dday_tzinfo_daylight.Name = "DAYLIGHT";
dday_tzinfo_daylight.Start = adjustmentRule.DateStart;
if (dday_tzinfo_daylight.Start.Year < 1800)
dday_tzinfo_daylight.Start = dday_tzinfo_daylight.Start.AddYears(1800 - dday_tzinfo_daylight.Start.Year);
dday_tzinfo_daylight.TZOffsetFrom = new DDay.iCal.DataTypes.UTC_Offset(utcOffset);
dday_tzinfo_daylight.TZOffsetTo = new DDay.iCal.DataTypes.UTC_Offset(utcOffset + delta);
PopulateiCalTimeZoneInfo(dday_tzinfo_daylight, adjustmentRule.DaylightTransitionStart, adjustmentRule.DateStart.Year);
// Add the "daylight" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_daylight);
}
return dday_tz;
}