C#中的DateTime

• DateTime
  • Field
    • DateTime.Now
    • DateTime.Date
    • DateTime.Year，DateTime.Month，DateTime.Day，DateTime.Hour，DateTime.Minute，DateTime.Second，DateTime.Millisecond
    • DateTime.DayOfWeek，DateTime.DayOfYear
    • DateTime.MaxValue
    • DateTime.MinValue
  • Method
    • DateTime.CompareTo
    • DateTime.Parse，DateTime.TryParse
    • DateTime.Add(TimeSpan value)
    • DateTime.AddYears，DateTime.AddMonths，DateTime.AddDays，DateTime.AddHours，DateTime.AddMinutes，DateTime.AddMilliseconds，DateTime.AddTicks
• TimeZoneInfo
• TimeSpan
• 时区
  • DateTime.UtcNow
  • TimeZoneInfo.ConvertTimeFromUtc
  • TimeZoneInfo.ConvertTimeToUtc
• 格式化
  • 使用ToString(string format)函数
    • 最常用："yyyy-MM-dd HH:mm:ss"
    •