3
由於silverlight沒有完整的TimeZoneInfo,我需要自己實現一些功能。例如,這個信息之後來自.NET的TimeZoneInfo夏令時規則和轉換
ID: Central Standard Time
Display Name: (UTC-06:00) Central Time (US & Canada)
Standard Name: Central Standard Time
Daylight Name: Central Daylight Time ***Has Daylight Saving Time***
Offset from UTC: -6 hours, 0 minutes
Number of adjustment rules: 2
Adjustment Rules:
From 1/1/0001 12:00:00 AM to 12/31/2006 12:00:00 AM
Delta: 01:00:00
Begins at 2:00 AM on Sunday of week 1 of April
Ends at 2:00 AM on Sunday of week 5 of October
From 1/1/2007 12:00:00 AM to 12/31/9999 12:00:00 AM
Delta: 01:00:00
Begins at 2:00 AM on Sunday of week 2 of March
Ends at 2:00 AM on Sunday of week 1 of November
我的問題是如何執行這樣的規則,當我需要從UTC轉換爲本地和回?
我應該UTC,。減去6小時,然後檢查是否凌晨2點之後的週日第2周的三月,然後加入1小時?
或者我應該採取UTC,檢查它是否是凌晨2點後,然後5。減去?